// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2000 Silicon Graphics, Inc. * All Rights Reserved. */ /* * doio - a general purpose io initiator with system call and * write logging. See doio.h for the structure which defines * what doio requests should look like. * * programming * notes: * ----------- * messages should generally be printed using doio_fprintf(). * */ #include "global.h" #include #include /* for struct iovec (readv)*/ #include /* for mmap(2) */ #include /* for i/o buffer in shared memory */ #include /* for i/o buffer in shared memory */ #include #include /* for delays */ #include struct io_req; int do_xfsctl(struct io_req *); #include "doio.h" #include "pattern.h" #include "write_log.h" #include "random_range.h" #include "string_to_tokens.h" #ifndef O_SSD #define O_SSD 0 /* so code compiles on a CRAY2 */ #endif #define UINT64_T unsigned long long #ifndef O_PARALLEL #define O_PARALLEL 0 /* so O_PARALLEL may be used in expressions */ #endif #define PPID_CHECK_INTERVAL 5 /* check ppid every <-- iterations */ #define MAX_AIO 256 /* maximum number of async I/O ops */ #define MPP_BUMP 0 #define SYSERR strerror(errno) /* * getopt() string of supported cmdline arguments. */ #define OPTS "aC:d:ehm:n:kr:w:vU:V:M:N:" #define DEF_RELEASE_INTERVAL 0 /* * Flags set in parse_cmdline() to indicate which options were selected * on the cmdline. */ int a_opt = 0; /* abort on data compare errors */ int e_opt = 0; /* exec() after fork()'ing */ int C_opt = 0; /* Data Check Type */ int d_opt = 0; /* delay between operations */ int k_opt = 0; /* lock file regions during writes */ int m_opt = 0; /* generate periodic messages */ int n_opt = 0; /* nprocs */ int r_opt = 0; /* resource release interval */ int w_opt = 0; /* file write log file */ int v_opt = 0; /* verify writes if set */ int U_opt = 0; /* upanic() on varios conditions */ int V_opt = 0; /* over-ride default validation fd type */ int M_opt = 0; /* data buffer allocation types */ char TagName[40]; /* name of this doio (see Monster) */ /* * Misc globals initialized in parse_cmdline() */ char *Prog = NULL; /* set up in parse_cmdline() */ int Upanic_Conditions; /* set by args to -U */ int Release_Interval; /* arg to -r */ int Nprocs; /* arg to -n */ char *Write_Log; /* arg to -w */ char *Infile; /* input file (defaults to stdin) */ int *Children; /* pids of child procs */ int Nchildren = 0; int Nsiblings = 0; /* tfork'ed siblings */ int Execd = 0; int Message_Interval = 0; int Npes = 0; /* non-zero if built as an mpp multi-pe app */ int Vpe = -1; /* Virtual pe number if Npes >= 0 */ int Reqno = 1; /* request # - used in some error messages */ int Reqskipcnt = 0; /* count of I/O requests that are skipped */ int Validation_Flags; char *(*Data_Check)(); /* function to call for data checking */ int (*Data_Fill)(); /* function to call for data filling */ int Nmemalloc = 0; /* number of memory allocation strategies */ int delayop = 0; /* delay between operations - type of delay */ int delaytime = 0; /* delay between operations - how long */ struct wlog_file Wlog; int active_mmap_rw = 0; /* Indicates that mmapped I/O is occurring. */ /* Used by sigbus_action() in the child doio. */ int havesigint = 0; #define SKIP_REQ -2 /* skip I/O request */ #define NMEMALLOC 32 #define MEM_DATA 1 /* data space */ #define MEM_SHMEM 2 /* System V shared memory */ #define MEM_T3ESHMEM 3 /* T3E Shared Memory */ #define MEM_MMAP 4 /* mmap(2) */ #define MEMF_PRIVATE 0001 #define MEMF_AUTORESRV 0002 #define MEMF_LOCAL 0004 #define MEMF_SHARED 0010 #define MEMF_FIXADDR 0100 #define MEMF_ADDR 0200 #define MEMF_AUTOGROW 0400 #define MEMF_FILE 01000 /* regular file -- unlink on close */ #define MEMF_MPIN 010000 /* use mpin(2) to lock pages in memory */ struct memalloc { int memtype; int flags; int nblks; char *name; void *space; /* memory address of allocated space */ int fd; /* FD open for mmaping */ int size; } Memalloc[NMEMALLOC]; /* * Global file descriptors */ int Wfd_Append; /* for appending to the write-log */ int Wfd_Random; /* for overlaying write-log entries */ /* * Structure for maintaining open file test descriptors. Used by * alloc_fd(). */ struct fd_cache { char c_file[MAX_FNAME_LENGTH+1]; int c_oflags; int c_fd; long c_rtc; int c_memalign; /* from xfsctl(XFS_IOC_DIOINFO) */ int c_miniosz; int c_maxiosz; void *c_memaddr; /* mmapped address */ int c_memlen; /* length of above region */ }; #define FD_ALLOC_INCR 32 /* allocate this many fd_map structs */ /* at a time */ /* * Globals for tracking Sds and Core usage */ char *Memptr; /* ptr to core buffer space */ int Memsize; /* # bytes pointed to by Memptr */ /* maintained by alloc_mem() */ int Sdsptr; /* sds offset (always 0) */ int Sdssize; /* # bytes of allocated sds space */ /* Maintained by alloc_sds() */ char Host[16]; char Pattern[128]; int Pattern_Length; /* * Signal handlers, and related globals */ void sigint_handler(); /* Catch SIGINT in parent doio, propagate * to children, does not die. */ void die_handler(); /* Bad sig in child doios, exit 1. */ void cleanup_handler(); /* Normal kill, exit 0. */ void sigbus_handler(); /* Handle sigbus--check active_mmap_rw to decide if this should be a normal exit. */ void cb_handler(); /* Posix aio callback handler. */ void noop_handler(); /* Delayop alarm, does nothing. */ char *hms(time_t t); char *format_rw(); char *format_sds(); char *format_listio(); char *check_file(char *file, int offset, int length, char *pattern, int pattern_length, int patshift, int fsa); int doio_fprintf(FILE *stream, char *format, ...); void doio_upanic(int mask); void doio(); void help(FILE *stream); void doio_delay(); int alloc_fd( char *, int ); int alloc_mem( int ); int do_read( struct io_req * ); int do_write( struct io_req * ); int do_rw( struct io_req * ); int do_sync( struct io_req * ); int usage( FILE * ); int aio_unregister( int ); int parse_cmdline( int, char **, char * ); int lock_file_region( char *, int, int, int, int ); struct fd_cache *alloc_fdcache(char *, int); int aio_register( int, int, int ); #ifndef linux int aio_wait(int); #endif /* * Upanic conditions, and a map from symbolics to values */ #define U_CORRUPTION 0001 /* upanic on data corruption */ #define U_IOSW 0002 /* upanic on bad iosw */ #define U_RVAL 0004 /* upanic on bad rval */ #define U_ALL (U_CORRUPTION | U_IOSW | U_RVAL) /* * Name-To-Value map * Used to map cmdline arguments to values */ struct smap { char *string; int value; }; struct smap Upanic_Args[] = { { "corruption", U_CORRUPTION }, { "iosw", U_IOSW }, { "rval", U_RVAL }, { "all", U_ALL }, { NULL, 0 } }; struct aio_info { int busy; int id; int fd; int strategy; volatile int done; int sig; int signalled; struct sigaction osa; }; struct aio_info Aio_Info[MAX_AIO]; struct aio_info *aio_slot(); int aio_done( struct aio_info * ); /* -C data-fill/check type */ #define C_DEFAULT 1 struct smap checkmap[] = { { "default", C_DEFAULT }, { NULL, 0 }, }; /* -d option delay types */ #define DELAY_SELECT 1 #define DELAY_SLEEP 2 #define DELAY_SGINAP 3 #define DELAY_ALARM 4 #define DELAY_ITIMER 5 /* POSIX timer */ struct smap delaymap[] = { { "select", DELAY_SELECT }, { "sleep", DELAY_SLEEP }, { "alarm", DELAY_ALARM }, { NULL, 0 }, }; /****** * * strerror() does similar actions. char * syserrno(int err) { static char sys_errno[10]; sprintf(sys_errno, "%d", errno); return(sys_errno); } ******/ int main(argc, argv) int argc; char **argv; { int i, pid, stat, ex_stat; struct sigaction sa; sigset_t block_mask, old_mask; umask(0); /* force new file modes to known values */ TagName[0] = '\0'; parse_cmdline(argc, argv, OPTS); random_range_seed(getpid()); /* initialize random number generator */ /* * If this is a re-exec of doio, jump directly into the doio function. */ if (Execd) { doio(); exit(E_SETUP); } /* * Stop on all but a few signals... */ sigemptyset(&sa.sa_mask); sa.sa_handler = sigint_handler; sa.sa_flags = SA_RESETHAND; /* sigint is ignored after the */ /* first time */ for (i = 1; i <= NSIG; i++) { switch(i) { #ifdef SIGRECOVERY case SIGRECOVERY: break; #endif #ifdef SIGCKPT case SIGCKPT: #endif #ifdef SIGRESTART case SIGRESTART: #endif case SIGTSTP: case SIGSTOP: case SIGCONT: case SIGCHLD: case SIGBUS: case SIGSEGV: case SIGQUIT: break; default: sigaction(i, &sa, NULL); } } /* * If we're logging write operations, make a dummy call to wlog_open * to initialize the write history file. This call must be done in * the parent, to ensure that the history file exists and/or has * been truncated before any children attempt to open it, as the doio * children are not allowed to truncate the file. */ if (w_opt) { strcpy(Wlog.w_file, Write_Log); if (wlog_open(&Wlog, 1, 0666) < 0) { doio_fprintf(stderr, "Could not create/truncate write log %s\n", Write_Log); exit(2); } wlog_close(&Wlog); } /* * Malloc space for the children pid array. Initialize all entries * to -1. */ Children = (int *)malloc(sizeof(int) * Nprocs); for (i = 0; i < Nprocs; i++) { Children[i] = -1; } sigemptyset(&block_mask); sigaddset(&block_mask, SIGCHLD); sigprocmask(SIG_BLOCK, &block_mask, &old_mask); /* * Fork Nprocs. This [parent] process is a watchdog, to notify the * invoker of procs which exit abnormally, and to make sure that all * child procs get cleaned up. If the -e option was used, we will also * re-exec. This is mostly for unicos/mk on mpp's, to ensure that not * all of the doio's don't end up in the same pe. * * Note - if Nprocs is 1, or this doio is a multi-pe app (Npes > 1), * jump directly to doio(). multi-pe apps can't fork(), and there is * no reason to fork() for 1 proc. */ if (Nprocs == 1 || Npes > 1) { doio(); exit(0); } else { for (i = 0; i < Nprocs; i++) { if ((pid = fork()) == -1) { doio_fprintf(stderr, "(parent) Could not fork %d children: %s (%d)\n", i+1, SYSERR, errno); exit(E_SETUP); } Children[Nchildren] = pid; Nchildren++; if (pid == 0) { if (e_opt) { char *exec_path; exec_path = argv[0]; argv[0] = (char *)malloc(strlen(exec_path + 1)); sprintf(argv[0], "-%s", exec_path); execvp(exec_path, argv); doio_fprintf(stderr, "(parent) Could not execvp %s: %s (%d)\n", exec_path, SYSERR, errno); exit(E_SETUP); } else { doio(); exit(E_SETUP); } } } /* * Parent spins on wait(), until all children exit. */ ex_stat = E_NORMAL; while (Nprocs) { if ((pid = wait(&stat)) == -1) { if (errno == EINTR) continue; } for (i = 0; i < Nchildren; i++) if (Children[i] == pid) Children[i] = -1; Nprocs--; if (WIFEXITED(stat)) { switch (WEXITSTATUS(stat)) { case E_NORMAL: /* noop */ break; case E_INTERNAL: doio_fprintf(stderr, "(parent) pid %d exited because of an internal error\n", pid); ex_stat |= E_INTERNAL; break; case E_SETUP: doio_fprintf(stderr, "(parent) pid %d exited because of a setup error\n", pid); ex_stat |= E_SETUP; break; case E_COMPARE: doio_fprintf(stderr, "(parent) pid %d exited because of data compare errors\n", pid); ex_stat |= E_COMPARE; if (a_opt) kill(0, SIGINT); break; case E_USAGE: doio_fprintf(stderr, "(parent) pid %d exited because of a usage error\n", pid); ex_stat |= E_USAGE; break; default: doio_fprintf(stderr, "(parent) pid %d exited with unknown status %d\n", pid, WEXITSTATUS(stat)); ex_stat |= E_INTERNAL; break; } } else if (WIFSIGNALED(stat) && WTERMSIG(stat) != SIGINT) { doio_fprintf(stderr, "(parent) pid %d terminated by signal %d\n", pid, WTERMSIG(stat)); ex_stat |= E_SIGNAL; } fflush(NULL); } } exit(ex_stat); } /* main */ /* * main doio function. Each doio child starts here, and never returns. */ void doio() { int rval, i, infd, nbytes; char *cp; struct io_req ioreq; struct sigaction sa, def_action, ignore_action, exit_action; struct sigaction sigbus_action; Memsize = Sdssize = 0; /* * Initialize the Pattern - write-type syscalls will replace Pattern[1] * with the pattern passed in the request. Make sure that * strlen(Pattern) is not mod 16 so that out of order words will be * detected. */ gethostname(Host, sizeof(Host)); if ((cp = strchr(Host, '.')) != NULL) *cp = '\0'; Pattern_Length = sprintf(Pattern, "-:%d:%s:%s*", (int)getpid(), Host, Prog); if (!(Pattern_Length % 16)) { Pattern_Length = sprintf(Pattern, "-:%d:%s:%s**", (int)getpid(), Host, Prog); } /* * Open a couple of descriptors for the write-log file. One descriptor * is for appending, one for random access. Write logging is done for * file corruption detection. The program doio_check is capable of * doing corruption detection based on a doio write-log. */ if (w_opt) { strcpy(Wlog.w_file, Write_Log); if (wlog_open(&Wlog, 0, 0666) == -1) { doio_fprintf(stderr, "Could not open write log file (%s): wlog_open() failed\n", Write_Log); exit(E_SETUP); } } /* * Open the input stream - either a file or stdin */ if (Infile == NULL) { infd = 0; } else { if ((infd = open(Infile, O_RDWR)) == -1) { doio_fprintf(stderr, "Could not open input file (%s): %s (%d)\n", Infile, SYSERR, errno); exit(E_SETUP); } } /* * Define a set of signals that should never be masked. Receipt of * these signals generally indicates a programming error, and we want * a corefile at the point of error. We put SIGQUIT in this list so * that ^\ will force a user core dump. * * Note: the handler for these should be SIG_DFL, all of them * produce a corefile as the default action. */ ignore_action.sa_handler = SIG_IGN; ignore_action.sa_flags = 0; sigemptyset(&ignore_action.sa_mask); def_action.sa_handler = SIG_DFL; def_action.sa_flags = 0; sigemptyset(&def_action.sa_mask); exit_action.sa_handler = cleanup_handler; exit_action.sa_flags = 0; sigemptyset(&exit_action.sa_mask); sa.sa_handler = die_handler; sa.sa_flags = 0; sigemptyset(&sa.sa_mask); sigbus_action.sa_handler = sigbus_handler; sigbus_action.sa_flags = 0; sigemptyset(&sigbus_action.sa_mask); for (i = 1; i <= NSIG; i++) { switch(i) { /* Signals to terminate program on */ case SIGINT: sigaction(i, &exit_action, NULL); break; /* This depends on active_mmap_rw */ case SIGBUS: sigaction(i, &sigbus_action, NULL); break; /* Signals to Ignore... */ case SIGSTOP: case SIGCONT: #ifdef SIGRECOVERY case SIGRECOVERY: #endif sigaction(i, &ignore_action, NULL); break; /* Signals to trap & report & die */ /*case SIGTRAP:*/ /*case SIGABRT:*/ #ifdef SIGERR /* cray only signals */ case SIGERR: case SIGBUFIO: case SIGINFO: #endif /*case SIGFPE:*/ case SIGURG: case SIGHUP: case SIGTERM: case SIGPIPE: case SIGIO: case SIGUSR1: case SIGUSR2: sigaction(i, &sa, NULL); break; /* Default Action for all other signals */ default: sigaction(i, &def_action, NULL); break; } } /* * Main loop - each doio proc does this until the read returns eof (0). * Call the appropriate io function based on the request type. */ while ((nbytes = read(infd, (char *)&ioreq, sizeof(ioreq)))) { /* * Periodically check our ppid. If it is 1, the child exits to * help clean up in the case that the main doio process was * killed. */ if (Reqno && ((Reqno % PPID_CHECK_INTERVAL) == 0)) { if (getppid() == 1) { doio_fprintf(stderr, "Parent doio process has exited\n"); alloc_mem(-1); exit(E_SETUP); } } if (nbytes == -1) { doio_fprintf(stderr, "read of %d bytes from input failed: %s (%d)\n", sizeof(ioreq), SYSERR, errno); alloc_mem(-1); exit(E_SETUP); } if (nbytes != sizeof(ioreq)) { doio_fprintf(stderr, "read wrong # bytes from input stream, expected %d, got %d\n", sizeof(ioreq), nbytes); alloc_mem(-1); exit(E_SETUP); } if (ioreq.r_magic != DOIO_MAGIC) { doio_fprintf(stderr, "got a bad magic # from input stream. Expected 0%o, got 0%o\n", DOIO_MAGIC, ioreq.r_magic); alloc_mem(-1); exit(E_SETUP); } /* * If we're on a Release_Interval multiple, relase all ssd and * core space, and close all fd's in Fd_Map[]. */ if (Reqno && Release_Interval && ! (Reqno%Release_Interval)) { if (Memsize) { #ifdef NOTDEF sbrk(-1 * Memsize); #else alloc_mem(-1); #endif } alloc_fd(NULL, 0); } switch (ioreq.r_type) { case READ: case READA: rval = do_read(&ioreq); break; case WRITE: case WRITEA: rval = do_write(&ioreq); break; case READV: case AREAD: case PREAD: case LREAD: case LREADA: case LSREAD: case LSREADA: case WRITEV: case AWRITE: case PWRITE: case MMAPR: case MMAPW: case LWRITE: case LWRITEA: case LSWRITE: case LSWRITEA: case LEREAD: case LEREADA: case LEWRITE: case LEWRITEA: rval = do_rw(&ioreq); break; case RESVSP: case UNRESVSP: rval = do_xfsctl(&ioreq); break; case FSYNC2: case FDATASYNC: rval = do_sync(&ioreq); break; default: doio_fprintf(stderr, "Don't know how to handle io request type %d\n", ioreq.r_type); alloc_mem(-1); exit(E_SETUP); } if (rval == SKIP_REQ){ Reqskipcnt++; } else if (rval != 0) { alloc_mem(-1); doio_fprintf(stderr, "doio(): operation %d returned != 0\n", ioreq.r_type); exit(E_SETUP); } if (Message_Interval && Reqno % Message_Interval == 0) { doio_fprintf(stderr, "Info: %d requests done (%d skipped) by this process\n", Reqno, Reqskipcnt); } Reqno++; if(delayop != 0) doio_delay(); } /* * Child exits normally */ alloc_mem(-1); exit(E_NORMAL); } /* doio */ void doio_delay() { struct timeval tv_delay; struct sigaction sa_al, sa_old; sigset_t al_mask; switch(delayop) { case DELAY_SELECT: tv_delay.tv_sec = delaytime / 1000000; tv_delay.tv_usec = delaytime % 1000000; /*doio_fprintf(stdout, "delay_select: %d %d\n", tv_delay.tv_sec, tv_delay.tv_usec);*/ select(0, NULL, NULL, NULL, &tv_delay); break; case DELAY_SLEEP: sleep(delaytime); break; case DELAY_ALARM: sa_al.sa_flags = 0; sa_al.sa_handler = noop_handler; sigemptyset(&sa_al.sa_mask); sigaction(SIGALRM, &sa_al, &sa_old); sigemptyset(&al_mask); alarm(delaytime); sigsuspend(&al_mask); sigaction(SIGALRM, &sa_old, 0); break; } } /* * Format IO requests, returning a pointer to the formatted text. * * format_strat - formats the async i/o completion strategy * format_rw - formats a read[a]/write[a] request * format_sds - formats a ssread/sswrite request * format_listio- formats a listio request * * ioreq is the doio io request structure. */ struct smap sysnames[] = { { "READ", READ }, { "WRITE", WRITE }, { "READA", READA }, { "WRITEA", WRITEA }, { "SSREAD", SSREAD }, { "SSWRITE", SSWRITE }, { "LISTIO", LISTIO }, { "LREAD", LREAD }, { "LREADA", LREADA }, { "LWRITE", LWRITE }, { "LWRITEA", LWRITEA }, { "LSREAD", LSREAD }, { "LSREADA", LSREADA }, { "LSWRITE", LSWRITE }, { "LSWRITEA", LSWRITEA }, /* Irix System Calls */ { "PREAD", PREAD }, { "PWRITE", PWRITE }, { "AREAD", AREAD }, { "AWRITE", AWRITE }, { "LLREAD", LLREAD }, { "LLAREAD", LLAREAD }, { "LLWRITE", LLWRITE }, { "LLAWRITE", LLAWRITE }, { "RESVSP", RESVSP }, { "UNRESVSP", UNRESVSP }, /* Irix and Linux System Calls */ { "READV", READV }, { "WRITEV", WRITEV }, { "MMAPR", MMAPR }, { "MMAPW", MMAPW }, { "FSYNC2", FSYNC2 }, { "FDATASYNC", FDATASYNC }, { "unknown", -1 }, }; struct smap aionames[] = { { "poll", A_POLL }, { "signal", A_SIGNAL }, { "recall", A_RECALL }, { "recalla", A_RECALLA }, { "recalls", A_RECALLS }, { "suspend", A_SUSPEND }, { "callback", A_CALLBACK }, { "synch", 0 }, { "unknown", -1 }, }; char * format_oflags(int oflags) { char flags[255]; flags[0]='\0'; switch(oflags & 03) { case O_RDONLY: strcat(flags,"O_RDONLY,"); break; case O_WRONLY: strcat(flags,"O_WRONLY,"); break; case O_RDWR: strcat(flags,"O_RDWR,"); break; default: strcat(flags,"O_weird"); break; } if(oflags & O_EXCL) strcat(flags,"O_EXCL,"); if(oflags & O_SYNC) strcat(flags,"O_SYNC,"); if(oflags & O_DIRECT) strcat(flags,"O_DIRECT,"); return(strdup(flags)); } char * format_strat(int strategy) { char msg[64]; char *aio_strat; switch (strategy) { case A_POLL: aio_strat = "POLL"; break; case A_SIGNAL: aio_strat = "SIGNAL"; break; case A_RECALL: aio_strat = "RECALL"; break; case A_RECALLA: aio_strat = "RECALLA"; break; case A_RECALLS: aio_strat = "RECALLS"; break; case A_SUSPEND: aio_strat = "SUSPEND"; break; case A_CALLBACK: aio_strat = "CALLBACK"; break; case 0: aio_strat = ""; break; default: sprintf(msg, "", strategy); aio_strat = strdup(msg); break; } return(aio_strat); } char * format_rw( struct io_req *ioreq, int fd, void *buffer, int signo, char *pattern, void *iosw ) { static char *errbuf=NULL; char *aio_strat, *cp; struct read_req *readp = &ioreq->r_data.read; struct write_req *writep = &ioreq->r_data.write; struct read_req *readap = &ioreq->r_data.read; struct write_req *writeap = &ioreq->r_data.write; if(errbuf == NULL) errbuf = (char *)malloc(32768); cp = errbuf; cp += sprintf(cp, "Request number %d\n", Reqno); switch (ioreq->r_type) { case READ: cp += sprintf(cp, "syscall: read(%d, %#lo, %d)\n", fd, (unsigned long) buffer, readp->r_nbytes); cp += sprintf(cp, " fd %d is file %s - open flags are %#o\n", fd, readp->r_file, readp->r_oflags); cp += sprintf(cp, " read done at file offset %d\n", readp->r_offset); break; case WRITE: cp += sprintf(cp, "syscall: write(%d, %#lo, %d)\n", fd, (unsigned long) buffer, writep->r_nbytes); cp += sprintf(cp, " fd %d is file %s - open flags are %#o\n", fd, writep->r_file, writep->r_oflags); cp += sprintf(cp, " write done at file offset %d - pattern is %s\n", writep->r_offset, pattern); break; case READA: aio_strat = format_strat(readap->r_aio_strat); cp += sprintf(cp, "syscall: reada(%d, %#lo, %d, %#lo, %d)\n", fd, (unsigned long) buffer, readap->r_nbytes, (unsigned long) iosw, signo); cp += sprintf(cp, " fd %d is file %s - open flags are %#o\n", fd, readap->r_file, readp->r_oflags); cp += sprintf(cp, " reada done at file offset %d\n", readap->r_offset); cp += sprintf(cp, " async io completion strategy is %s\n", aio_strat); break; case WRITEA: aio_strat = format_strat(writeap->r_aio_strat); cp += sprintf(cp, "syscall: writea(%d, %#lo, %d, %#lo, %d)\n", fd, (unsigned long) buffer, writeap->r_nbytes, (unsigned long) iosw, signo); cp += sprintf(cp, " fd %d is file %s - open flags are %#o\n", fd, writeap->r_file, writeap->r_oflags); cp += sprintf(cp, " writea done at file offset %d - pattern is %s\n", writeap->r_offset, pattern); cp += sprintf(cp, " async io completion strategy is %s\n", aio_strat); break; } return errbuf; } /* * Perform the various sorts of disk reads */ int do_read(req) struct io_req *req; { int fd, offset, nbytes, oflags, rval; char *addr, *file; struct fd_cache *fdc; /* * Initialize common fields - assumes r_oflags, r_file, r_offset, and * r_nbytes are at the same offset in the read_req and reada_req * structures. */ file = req->r_data.read.r_file; oflags = req->r_data.read.r_oflags; offset = req->r_data.read.r_offset; nbytes = req->r_data.read.r_nbytes; /*printf("read: %s, %#o, %d %d\n", file, oflags, offset, nbytes);*/ /* * Grab an open file descriptor * Note: must be done before memory allocation so that the direct i/o * information is available in mem. allocate */ if ((fd = alloc_fd(file, oflags)) == -1) return -1; /* * Allocate core or sds - based on the O_SSD flag */ #ifndef wtob #define wtob(x) (x * sizeof(UINT64_T)) #endif /* get memory alignment for using DIRECT I/O */ fdc = alloc_fdcache(file, oflags); if ((rval = alloc_mem(nbytes + wtob(1) * 2 + fdc->c_memalign)) < 0) { return rval; } addr = Memptr; if( (req->r_data.read.r_uflags & F_WORD_ALIGNED) ) { /* * Force memory alignment for Direct I/O */ if( (oflags & O_DIRECT) && ((long)addr % fdc->c_memalign != 0) ) { addr += fdc->c_memalign - ((long)addr % fdc->c_memalign); } } else { addr += random_range(0, wtob(1) - 1, 1, NULL); } switch (req->r_type) { case READ: /* move to the desired file position. */ if (lseek(fd, offset, SEEK_SET) == -1) { doio_fprintf(stderr, "lseek(%d, %d, SEEK_SET) failed: %s (%d)\n", fd, offset, SYSERR, errno); return -1; } if ((rval = read(fd, addr, nbytes)) == -1) { doio_fprintf(stderr, "read() request failed: %s (%d)\n%s\n", SYSERR, errno, format_rw(req, fd, addr, -1, NULL, NULL)); doio_upanic(U_RVAL); return -1; } else if (rval != nbytes) { doio_fprintf(stderr, "read() request returned wrong # of bytes - expected %d, got %d\n%s\n", nbytes, rval, format_rw(req, fd, addr, -1, NULL, NULL)); doio_upanic(U_RVAL); return -1; } break; } return 0; /* if we get here, everything went ok */ } /* * Perform the verious types of disk writes. */ int do_write(req) struct io_req *req; { static int pid = -1; int fd, nbytes, oflags; /* REFERENCED */ int logged_write, rval, got_lock; long offset, woffset = 0; char *addr, pattern, *file, *msg; struct wlog_rec wrec; struct fd_cache *fdc; /* * Misc variable setup */ nbytes = req->r_data.write.r_nbytes; offset = req->r_data.write.r_offset; pattern = req->r_data.write.r_pattern; file = req->r_data.write.r_file; oflags = req->r_data.write.r_oflags; /*printf("pwrite: %s, %#o, %d %d\n", file, oflags, offset, nbytes);*/ /* * Allocate core memory and possibly sds space. Initialize the data * to be written. */ Pattern[0] = pattern; /* * Get a descriptor to do the io on */ if ((fd = alloc_fd(file, oflags)) == -1) return -1; /*printf("write: %d, %s, %#o, %d %d\n", fd, file, oflags, offset, nbytes);*/ /* * Allocate SDS space for backdoor write if desired */ /* get memory alignment for using DIRECT I/O */ fdc = alloc_fdcache(file, oflags); if ((rval = alloc_mem(nbytes + wtob(1) * 2 + fdc->c_memalign)) < 0) { return rval; } addr = Memptr; if( (req->r_data.write.r_uflags & F_WORD_ALIGNED) ) { /* * Force memory alignment for Direct I/O */ if( (oflags & O_DIRECT) && ((long)addr % fdc->c_memalign != 0) ) { addr += fdc->c_memalign - ((long)addr % fdc->c_memalign); } } else { addr += random_range(0, wtob(1) - 1, 1, NULL); } (*Data_Fill)(Memptr, nbytes, Pattern, Pattern_Length, 0); if( addr != Memptr ) memmove( addr, Memptr, nbytes); rval = -1; got_lock = 0; logged_write = 0; if (k_opt) { if (lock_file_region(file, fd, F_WRLCK, offset, nbytes) < 0) { alloc_mem(-1); exit(E_INTERNAL); } got_lock = 1; } /* * Write a preliminary write-log entry. This is done so that * doio_check can do corruption detection across an interrupt/crash. * Note that w_done is set to 0. If doio_check sees this, it * re-creates the file extents as if the write completed, but does not * do any checking - see comments in doio_check for more details. */ if (w_opt) { if (pid == -1) { pid = getpid(); } wrec.w_async = (req->r_type == WRITEA) ? 1 : 0; wrec.w_oflags = oflags; wrec.w_pid = pid; wrec.w_offset = offset; wrec.w_nbytes = nbytes; wrec.w_pathlen = strlen(file); memcpy(wrec.w_path, file, wrec.w_pathlen); wrec.w_hostlen = strlen(Host); memcpy(wrec.w_host, Host, wrec.w_hostlen); wrec.w_patternlen = Pattern_Length; memcpy(wrec.w_pattern, Pattern, wrec.w_patternlen); wrec.w_done = 0; if ((woffset = wlog_record_write(&Wlog, &wrec, -1)) == -1) { doio_fprintf(stderr, "Could not append to write-log: %s (%d)\n", SYSERR, errno); } else { logged_write = 1; } } switch (req->r_type ) { case WRITE: /* * sync write */ if (lseek(fd, offset, SEEK_SET) == -1) { doio_fprintf(stderr, "lseek(%d, %d, SEEK_SET) failed: %s (%d)\n", fd, offset, SYSERR, errno); return -1; } rval = write(fd, addr, nbytes); if (rval == -1) { doio_fprintf(stderr, "write() failed: %s (%d)\n%s\n", SYSERR, errno, format_rw(req, fd, addr, -1, Pattern, NULL)); doio_fprintf(stderr, "write() failed: %s\n\twrite(%d, %#o, %d)\n\toffset %d, nbytes%%miniou(%d)=%d, oflags=%#o memalign=%d, addr%%memalign=%d\n", strerror(errno), fd, addr, nbytes, offset, fdc->c_miniosz, nbytes%fdc->c_miniosz, oflags, fdc->c_memalign, (long)addr%fdc->c_memalign); doio_upanic(U_RVAL); } else if (rval != nbytes) { doio_fprintf(stderr, "write() returned wrong # bytes - expected %d, got %d\n%s\n", nbytes, rval, format_rw(req, fd, addr, -1, Pattern, NULL)); doio_upanic(U_RVAL); rval = -1; } break; } /* * Verify that the data was written correctly - check_file() returns * a non-null pointer which contains an error message if there are * problems. */ if (v_opt) { msg = check_file(file, offset, nbytes, Pattern, Pattern_Length, 0, oflags & O_PARALLEL); if (msg != NULL) { doio_fprintf(stderr, "%s%s\n", msg, format_rw(req, fd, addr, -1, Pattern, NULL) ); doio_upanic(U_CORRUPTION); exit(E_COMPARE); } } /* * General cleanup ... * * Write extent information to the write-log, so that doio_check can do * corruption detection. Note that w_done is set to 1, indicating that * the write has been verified as complete. We don't need to write the * filename on the second logging. */ if (w_opt && logged_write) { wrec.w_done = 1; wlog_record_write(&Wlog, &wrec, woffset); } /* * Unlock file region if necessary */ if (got_lock) { if (lock_file_region(file, fd, F_UNLCK, offset, nbytes) < 0) { alloc_mem(-1); exit(E_INTERNAL); } } return( (rval == -1) ? -1 : 0); } /* * Simple routine to lock/unlock a file using fcntl() */ int lock_file_region(fname, fd, type, start, nbytes) char *fname; int fd; int type; int start; int nbytes; { struct flock flk; flk.l_type = type; flk.l_whence = 0; flk.l_start = start; flk.l_len = nbytes; if (fcntl(fd, F_SETLKW, &flk) < 0) { doio_fprintf(stderr, "fcntl(%d, %d, %#o) failed for file %s, lock type %d, offset %d, length %d: %s (%d), open flags: %#o\n", fd, F_SETLKW, &flk, fname, type, start, nbytes, SYSERR, errno, fcntl(fd, F_GETFL, 0)); return -1; } return 0; } int do_listio(req) struct io_req *req; { return -1; } /* --------------------------------------------------------------------------- * * A new paradigm of doing the r/w system call where there is a "stub" * function that builds the info for the system call, then does the system * call; this is called by code that is common to all system calls and does * the syscall return checking, async I/O wait, iosw check, etc. * * Flags: * WRITE, ASYNC, SSD/SDS, * FILE_LOCK, WRITE_LOG, VERIFY_DATA, */ struct status { int rval; /* syscall return */ int err; /* errno */ int *aioid; /* list of async I/O structures */ }; struct syscall_info { char *sy_name; int sy_type; struct status *(*sy_syscall)(); int (*sy_buffer)(); char *(*sy_format)(); int sy_flags; int sy_bits; }; #define SY_WRITE 00001 #define SY_ASYNC 00010 #define SY_IOSW 00020 #define SY_SDS 00100 char * fmt_ioreq(struct io_req *ioreq, struct syscall_info *sy, int fd) { static char *errbuf=NULL; char *cp; struct rw_req *io; struct smap *aname; if(errbuf == NULL) errbuf = (char *)malloc(32768); io = &ioreq->r_data.io; /* * Look up async I/O completion strategy */ for(aname=aionames; aname->value != -1 && aname->value != io->r_aio_strat; aname++) ; cp = errbuf; cp += sprintf(cp, "Request number %d\n", Reqno); cp += sprintf(cp, " fd %d is file %s - open flags are %#o %s\n", fd, io->r_file, io->r_oflags, format_oflags(io->r_oflags)); if(sy->sy_flags & SY_WRITE) { cp += sprintf(cp, " write done at file offset %d - pattern is %c (%#o)\n", io->r_offset, (io->r_pattern == '\0') ? '?' : io->r_pattern, io->r_pattern); } else { cp += sprintf(cp, " read done at file offset %d\n", io->r_offset); } if(sy->sy_flags & SY_ASYNC) { cp += sprintf(cp, " async io completion strategy is %s\n", aname->string); } cp += sprintf(cp, " number of requests is %d, strides per request is %d\n", io->r_nent, io->r_nstrides); cp += sprintf(cp, " i/o byte count = %d\n", io->r_nbytes); cp += sprintf(cp, " memory alignment is %s\n", (io->r_uflags & F_WORD_ALIGNED) ? "aligned" : "unaligned"); if(io->r_oflags & O_DIRECT) { char *dio_env; struct dioattr finfo; if(xfsctl(io->r_file, fd, XFS_IOC_DIOINFO, &finfo) == -1) { cp += sprintf(cp, " Error %s (%d) getting direct I/O info\n", strerror(errno), errno); finfo.d_mem = 1; finfo.d_miniosz = 1; finfo.d_maxiosz = 1; } dio_env = getenv("XFS_DIO_MIN"); if (dio_env) finfo.d_mem = finfo.d_miniosz = atoi(dio_env); cp += sprintf(cp, " DIRECT I/O: offset %% %d = %d length %% %d = %d\n", finfo.d_miniosz, io->r_offset % finfo.d_miniosz, io->r_nbytes, io->r_nbytes % finfo.d_miniosz); cp += sprintf(cp, " mem alignment 0x%x xfer size: small: %d large: %d\n", finfo.d_mem, finfo.d_miniosz, finfo.d_maxiosz); } return(errbuf); } struct status * sy_pread(req, sysc, fd, addr) struct io_req *req; struct syscall_info *sysc; int fd; char *addr; { int rc; struct status *status; rc = pread(fd, addr, req->r_data.io.r_nbytes, req->r_data.io.r_offset); status = (struct status *)malloc(sizeof(struct status)); if( status == NULL ){ doio_fprintf(stderr, "malloc failed, %s/%d\n", __FILE__, __LINE__); return NULL; } status->aioid = NULL; status->rval = rc; status->err = errno; return(status); } struct status * sy_pwrite(req, sysc, fd, addr) struct io_req *req; struct syscall_info *sysc; int fd; char *addr; { int rc; struct status *status; rc = pwrite(fd, addr, req->r_data.io.r_nbytes, req->r_data.io.r_offset); status = (struct status *)malloc(sizeof(struct status)); if( status == NULL ){ doio_fprintf(stderr, "malloc failed, %s/%d\n", __FILE__, __LINE__); return NULL; } status->aioid = NULL; status->rval = rc; status->err = errno; return(status); } char * fmt_pread(struct io_req *req, struct syscall_info *sy, int fd, char *addr) { static char *errbuf = NULL; char *cp; if(errbuf == NULL){ errbuf = (char *)malloc(32768); if( errbuf == NULL ){ doio_fprintf(stderr, "malloc failed, %s/%d\n", __FILE__, __LINE__); return NULL; } } cp = errbuf; cp += sprintf(cp, "syscall: %s(%d, 0x%p, %d)\n", sy->sy_name, fd, addr, req->r_data.io.r_nbytes); return(errbuf); } struct status * sy_rwv(req, sysc, fd, addr, rw) struct io_req *req; struct syscall_info *sysc; int fd; char *addr; int rw; { int rc; struct status *status; struct iovec iov[2]; status = (struct status *)malloc(sizeof(struct status)); if( status == NULL ){ doio_fprintf(stderr, "malloc failed, %s/%d\n", __FILE__, __LINE__); return NULL; } status->aioid = NULL; /* move to the desired file position. */ if ((rc=lseek(fd, req->r_data.io.r_offset, SEEK_SET)) == -1) { status->rval = rc; status->err = errno; return(status); } iov[0].iov_base = addr; iov[0].iov_len = req->r_data.io.r_nbytes; if(rw) rc = writev(fd, iov, 1); else rc = readv(fd, iov, 1); status->aioid = NULL; status->rval = rc; status->err = errno; return(status); } struct status * sy_readv(req, sysc, fd, addr) struct io_req *req; struct syscall_info *sysc; int fd; char *addr; { return sy_rwv(req, sysc, fd, addr, 0); } struct status * sy_writev(req, sysc, fd, addr) struct io_req *req; struct syscall_info *sysc; int fd; char *addr; { return sy_rwv(req, sysc, fd, addr, 1); } char * fmt_readv(struct io_req *req, struct syscall_info *sy, int fd, char *addr) { static char errbuf[32768]; char *cp; cp = errbuf; cp += sprintf(cp, "syscall: %s(%d, (iov on stack), 1)\n", sy->sy_name, fd); return(errbuf); } struct status * sy_mmrw(req, sysc, fd, addr, rw) struct io_req *req; struct syscall_info *sysc; int fd; char *addr; int rw; { /* * mmap read/write * This version is oriented towards mmaping the file to memory * ONCE and keeping it mapped. */ struct status *status; void *mrc, *memaddr; struct fd_cache *fdc; struct stat sbuf; status = (struct status *)malloc(sizeof(struct status)); if( status == NULL ){ doio_fprintf(stderr, "malloc failed, %s/%d\n", __FILE__, __LINE__); return NULL; } status->aioid = NULL; status->rval = -1; fdc = alloc_fdcache(req->r_data.io.r_file, req->r_data.io.r_oflags); if( fdc->c_memaddr == NULL ) { if( fstat(fd, &sbuf) < 0 ){ doio_fprintf(stderr, "fstat failed, errno=%d\n", errno); status->err = errno; return(status); } fdc->c_memlen = (int)sbuf.st_size; mrc = mmap(NULL, (int)sbuf.st_size, rw ? PROT_WRITE|PROT_READ : PROT_READ, MAP_SHARED, fd, 0); if( mrc == MAP_FAILED ) { doio_fprintf(stderr, "mmap() failed - 0x%lx %d\n", mrc, errno); status->err = errno; return(status); } fdc->c_memaddr = mrc; } memaddr = (void *)((char *)fdc->c_memaddr + req->r_data.io.r_offset); active_mmap_rw = 1; if(rw) memcpy(memaddr, addr, req->r_data.io.r_nbytes); else memcpy(addr, memaddr, req->r_data.io.r_nbytes); active_mmap_rw = 0; status->rval = req->r_data.io.r_nbytes; status->err = 0; return(status); } struct status * sy_mmread(req, sysc, fd, addr) struct io_req *req; struct syscall_info *sysc; int fd; char *addr; { return sy_mmrw(req, sysc, fd, addr, 0); } struct status * sy_mmwrite(req, sysc, fd, addr) struct io_req *req; struct syscall_info *sysc; int fd; char *addr; { return sy_mmrw(req, sysc, fd, addr, 1); } char * fmt_mmrw(struct io_req *req, struct syscall_info *sy, int fd, char *addr) { static char errbuf[32768]; char *cp; struct fd_cache *fdc; void *memaddr; fdc = alloc_fdcache(req->r_data.io.r_file, req->r_data.io.r_oflags); cp = errbuf; cp += sprintf(cp, "syscall: %s(NULL, %d, %s, MAP_SHARED, %d, 0)\n", sy->sy_name, fdc->c_memlen, (sy->sy_flags & SY_WRITE) ? "PROT_WRITE" : "PROT_READ", fd); cp += sprintf(cp, "\tfile is mmaped to: 0x%lx\n", (unsigned long) fdc->c_memaddr); memaddr = (void *)((char *)fdc->c_memaddr + req->r_data.io.r_offset); cp += sprintf(cp, "\tfile-mem=0x%lx, length=%d, buffer=0x%lx\n", (unsigned long) memaddr, req->r_data.io.r_nbytes, (unsigned long) addr); return(errbuf); } struct syscall_info syscalls[] = { { "pread", PREAD, sy_pread, NULL, fmt_pread, 0 }, { "pwrite", PWRITE, sy_pwrite, NULL, fmt_pread, SY_WRITE }, { "readv", READV, sy_readv, NULL, fmt_readv, 0 }, { "writev", WRITEV, sy_writev, NULL, fmt_readv, SY_WRITE }, { "mmap-read", MMAPR, sy_mmread, NULL, fmt_mmrw, 0 }, { "mmap-write", MMAPW, sy_mmwrite, NULL, fmt_mmrw, SY_WRITE }, { NULL, 0, 0, 0, 0, 0 }, }; int do_rw(req) struct io_req *req; { static int pid = -1; int fd, offset, nbytes, nstrides, nents, oflags; int rval, mem_needed, i; int logged_write, got_lock, woffset = 0, pattern; int min_byte, max_byte; char *addr, *file, *msg; struct status *s; struct wlog_rec wrec; struct syscall_info *sy; struct fd_cache *fdc; /* * Initialize common fields - assumes r_oflags, r_file, r_offset, and * r_nbytes are at the same offset in the read_req and reada_req * structures. */ file = req->r_data.io.r_file; oflags = req->r_data.io.r_oflags; offset = req->r_data.io.r_offset; nbytes = req->r_data.io.r_nbytes; nstrides= req->r_data.io.r_nstrides; nents = req->r_data.io.r_nent; pattern = req->r_data.io.r_pattern; if( nents >= MAX_AIO ) { doio_fprintf(stderr, "do_rw: too many list requests, %d. Maximum is %d\n", nents, MAX_AIO); return(-1); } /* * look up system call info */ for(sy=syscalls; sy->sy_name != NULL && sy->sy_type != req->r_type; sy++) ; if(sy->sy_name == NULL) { doio_fprintf(stderr, "do_rw: unknown r_type %d.\n", req->r_type); return(-1); } /* * Get an open file descriptor * Note: must be done before memory allocation so that the direct i/o * information is available in mem. allocate */ if ((fd = alloc_fd(file, oflags)) == -1) return -1; /* * Allocate core memory and possibly sds space. Initialize the * data to be written. Make sure we get enough, based on the * memstride. * * need: * 1 extra word for possible partial-word address "bump" * 1 extra word for dynamic pattern overrun * MPP_BUMP extra words for T3E non-hw-aligned memory address. */ if( sy->sy_buffer != NULL ) { mem_needed = (*sy->sy_buffer)(req, 0, 0, NULL, NULL); } else { mem_needed = nbytes; } /* get memory alignment for using DIRECT I/O */ fdc = alloc_fdcache(file, oflags); if ((rval = alloc_mem(mem_needed + wtob(1) * 2 + fdc->c_memalign)) < 0) { return rval; } Pattern[0] = pattern; /* * Allocate SDS space for backdoor write if desired */ if (oflags & O_SSD) { doio_fprintf(stderr, "Invalid O_SSD flag was generated for non-Cray system\n"); fflush(stderr); return -1; } else { addr = Memptr; /* * if io is not raw, bump the offset by a random amount * to generate non-word-aligned io. * * On MPP systems, raw I/O must start on an 0x80 byte boundary. * For non-aligned I/O, bump the address from 1 to 8 words. */ if (! (req->r_data.io.r_uflags & F_WORD_ALIGNED)) { addr += random_range(0, wtob(1) - 1, 1, NULL); } /* * Force memory alignment for Direct I/O */ if( (oflags & O_DIRECT) && ((long)addr % fdc->c_memalign != 0) ) { addr += fdc->c_memalign - ((long)addr % fdc->c_memalign); } /* * FILL must be done on a word-aligned buffer. * Call the fill function with Memptr which is aligned, * then memmove it to the right place. */ if (sy->sy_flags & SY_WRITE) { (*Data_Fill)(Memptr, mem_needed, Pattern, Pattern_Length, 0); if( addr != Memptr ) memmove( addr, Memptr, mem_needed); } } rval = 0; got_lock = 0; logged_write = 0; /* * Lock data if this is a write and locking option is set */ if (sy->sy_flags & SY_WRITE && k_opt) { if( sy->sy_buffer != NULL ) { (*sy->sy_buffer)(req, offset, 0, &min_byte, &max_byte); } else { min_byte = offset; max_byte = offset + (nbytes * nstrides * nents); } if (lock_file_region(file, fd, F_WRLCK, min_byte, (max_byte-min_byte+1)) < 0) { doio_fprintf(stderr, "file lock failed:\n%s\n", fmt_ioreq(req, sy, fd)); doio_fprintf(stderr, " buffer(req, %d, 0, 0x%x, 0x%x)\n", offset, min_byte, max_byte); alloc_mem(-1); exit(E_INTERNAL); } got_lock = 1; } /* * Write a preliminary write-log entry. This is done so that * doio_check can do corruption detection across an interrupt/crash. * Note that w_done is set to 0. If doio_check sees this, it * re-creates the file extents as if the write completed, but does not * do any checking - see comments in doio_check for more details. */ if (sy->sy_flags & SY_WRITE && w_opt) { if (pid == -1) { pid = getpid(); } wrec.w_async = (sy->sy_flags & SY_ASYNC) ? 1 : 0; wrec.w_oflags = oflags; wrec.w_pid = pid; wrec.w_offset = offset; wrec.w_nbytes = nbytes; /* mem_needed -- total length */ wrec.w_pathlen = strlen(file); memcpy(wrec.w_path, file, wrec.w_pathlen); wrec.w_hostlen = strlen(Host); memcpy(wrec.w_host, Host, wrec.w_hostlen); wrec.w_patternlen = Pattern_Length; memcpy(wrec.w_pattern, Pattern, wrec.w_patternlen); wrec.w_done = 0; if ((woffset = wlog_record_write(&Wlog, &wrec, -1)) == -1) { doio_fprintf(stderr, "Could not append to write-log: %s (%d)\n", SYSERR, errno); } else { logged_write = 1; } } s = (*sy->sy_syscall)(req, sy, fd, addr); if( s->rval == -1 ) { doio_fprintf(stderr, "%s() request failed: %s (%d)\n%s\n%s\n", sy->sy_name, SYSERR, errno, fmt_ioreq(req, sy, fd), (*sy->sy_format)(req, sy, fd, addr)); doio_upanic(U_RVAL); for(i=0; i < nents; i++) { if(s->aioid == NULL) break; aio_unregister(s->aioid[i]); } rval = -1; } else { /* * If the syscall was async, wait for I/O to complete */ #ifndef linux if(sy->sy_flags & SY_ASYNC) { for(i=0; i < nents; i++) { aio_wait(s->aioid[i]); } } #endif /* * Check the syscall how-much-data-written return. Look * for this in either the return value or the 'iosw' * structure. */ if( !(sy->sy_flags & SY_IOSW) ) { if(s->rval != mem_needed) { doio_fprintf(stderr, "%s() request returned wrong # of bytes - expected %d, got %d\n%s\n%s\n", sy->sy_name, nbytes, s->rval, fmt_ioreq(req, sy, fd), (*sy->sy_format)(req, sy, fd, addr)); rval = -1; doio_upanic(U_RVAL); } } } /* * Verify that the data was written correctly - check_file() returns * a non-null pointer which contains an error message if there are * problems. */ if ( rval == 0 && sy->sy_flags & SY_WRITE && v_opt) { msg = check_file(file, offset, nbytes*nstrides*nents, Pattern, Pattern_Length, 0, oflags & O_PARALLEL); if (msg != NULL) { doio_fprintf(stderr, "%s\n%s\n%s\n", msg, fmt_ioreq(req, sy, fd), (*sy->sy_format)(req, sy, fd, addr)); doio_upanic(U_CORRUPTION); exit(E_COMPARE); } } /* * General cleanup ... * * Write extent information to the write-log, so that doio_check can do * corruption detection. Note that w_done is set to 1, indicating that * the write has been verified as complete. We don't need to write the * filename on the second logging. */ if (w_opt && logged_write) { wrec.w_done = 1; wlog_record_write(&Wlog, &wrec, woffset); } /* * Unlock file region if necessary */ if (got_lock) { if (lock_file_region(file, fd, F_UNLCK, min_byte, (max_byte-min_byte+1)) < 0) { alloc_mem(-1); exit(E_INTERNAL); } } if(s->aioid != NULL) free(s->aioid); free(s); return (rval == -1) ? -1 : 0; } /* * xfsctl-based requests * - XFS_IOC_RESVSP * - XFS_IOC_UNRESVSP */ int do_xfsctl(req) struct io_req *req; { int fd, oflags, offset, nbytes; int rval, op = 0; int got_lock; int min_byte = 0, max_byte = 0; char *file, *msg = NULL; struct xfs_flock64 flk; /* * Initialize common fields - assumes r_oflags, r_file, r_offset, and * r_nbytes are at the same offset in the read_req and reada_req * structures. */ file = req->r_data.io.r_file; oflags = req->r_data.io.r_oflags; offset = req->r_data.io.r_offset; nbytes = req->r_data.io.r_nbytes; flk.l_type=0; flk.l_whence=SEEK_SET; flk.l_start=offset; flk.l_len=nbytes; /* * Get an open file descriptor */ if ((fd = alloc_fd(file, oflags)) == -1) return -1; rval = 0; got_lock = 0; /* * Lock data if this is locking option is set */ if (k_opt) { min_byte = offset; max_byte = offset + nbytes; if (lock_file_region(file, fd, F_WRLCK, min_byte, (nbytes+1)) < 0) { doio_fprintf(stderr, "file lock failed:\n"); doio_fprintf(stderr, " buffer(req, %d, 0, 0x%x, 0x%x)\n", offset, min_byte, max_byte); alloc_mem(-1); exit(E_INTERNAL); } got_lock = 1; } switch (req->r_type) { case RESVSP: op=XFS_IOC_RESVSP; msg="resvsp"; break; case UNRESVSP: op=XFS_IOC_UNRESVSP; msg="unresvsp"; break; } rval = xfsctl(file, fd, op, &flk); if( rval == -1 ) { doio_fprintf(stderr, "xfsctl %s request failed: %s (%d)\n\txfsctl(%d, %s %d, {%d %lld ==> %lld}\n", msg, SYSERR, errno, fd, msg, op, flk.l_whence, (long long)flk.l_start, (long long)flk.l_len); doio_upanic(U_RVAL); rval = -1; } /* * Unlock file region if necessary */ if (got_lock) { if (lock_file_region(file, fd, F_UNLCK, min_byte, (max_byte-min_byte+1)) < 0) { alloc_mem(-1); exit(E_INTERNAL); } } return (rval == -1) ? -1 : 0; } /* * fsync(2) and fdatasync(2) */ int do_sync(req) struct io_req *req; { int fd, oflags; int rval; char *file; /* * Initialize common fields - assumes r_oflags, r_file, r_offset, and * r_nbytes are at the same offset in the read_req and reada_req * structures. */ file = req->r_data.io.r_file; oflags = req->r_data.io.r_oflags; /* * Get an open file descriptor */ if ((fd = alloc_fd(file, oflags)) == -1) return -1; rval = 0; switch(req->r_type) { case FSYNC2: rval = fsync(fd); break; case FDATASYNC: rval = fdatasync(fd); break; default: rval = -1; } return (rval == -1) ? -1 : 0; } int doio_pat_fill(char *addr, int mem_needed, char *Pattern, int Pattern_Length, int shift) { return pattern_fill(addr, mem_needed, Pattern, Pattern_Length, 0); } char * doio_pat_check(buf, offset, length, pattern, pattern_length, patshift) char *buf; int offset; int length; char *pattern; int pattern_length; int patshift; { static char errbuf[4096]; int nb, i, pattern_index; char *cp, *bufend, *ep; char actual[33], expected[33]; if (pattern_check(buf, length, pattern, pattern_length, patshift) != 0) { ep = errbuf; ep += sprintf(ep, "Corrupt regions follow - unprintable chars are represented as '.'\n"); ep += sprintf(ep, "-----------------------------------------------------------------\n"); pattern_index = patshift % pattern_length;; cp = buf; bufend = buf + length; while (cp < bufend) { if (*cp != pattern[pattern_index]) { nb = bufend - cp; if (nb > sizeof(expected)-1) { nb = sizeof(expected)-1; } ep += sprintf(ep, "corrupt bytes starting at file offset %d\n", offset + (int)(cp-buf)); /* * Fill in the expected and actual patterns */ bzero(expected, sizeof(expected)); bzero(actual, sizeof(actual)); for (i = 0; i < nb; i++) { expected[i] = pattern[(pattern_index + i) % pattern_length]; if (! isprint((int)expected[i])) { expected[i] = '.'; } actual[i] = cp[i]; if (! isprint((int)actual[i])) { actual[i] = '.'; } } ep += sprintf(ep, " 1st %2d expected bytes: %s\n", nb, expected); ep += sprintf(ep, " 1st %2d actual bytes: %s\n", nb, actual); fflush(stderr); return errbuf; } else { cp++; pattern_index++; if (pattern_index == pattern_length) { pattern_index = 0; } } } return errbuf; } return(NULL); } /* * Check the contents of a file beginning at offset, for length bytes. It * is assumed that there is a string of pattern bytes in this area of the * file. Use normal buffered reads to do the verification. * * If there is a data mismatch, write a detailed message into a static buffer * suitable for the caller to print. Otherwise print NULL. * * The fsa flag is set to non-zero if the buffer should be read back through * the FSA (unicos/mk). This implies the file will be opened * O_PARALLEL|O_RAW|O_WELLFORMED to do the validation. We must do this because * FSA will not allow the file to be opened for buffered io if it was * previously opened for O_PARALLEL io. */ char * check_file(file, offset, length, pattern, pattern_length, patshift, fsa) char *file; int offset; int length; char *pattern; int pattern_length; int patshift; int fsa; { static char errbuf[4096]; int fd, nb, flags; char *buf, *em, *ep; struct fd_cache *fdc; buf = Memptr; if (V_opt) { flags = Validation_Flags | O_RDONLY; } else { flags = O_RDONLY; } if ((fd = alloc_fd(file, flags)) == -1) { sprintf(errbuf, "Could not open file %s with flags %#o (%s) for data comparison: %s (%d)\n", file, flags, format_oflags(flags), SYSERR, errno); return errbuf; } if (lseek(fd, offset, SEEK_SET) == -1) { sprintf(errbuf, "Could not lseek to offset %d in %s for verification: %s (%d)\n", offset, file, SYSERR, errno); return errbuf; } /* Guarantee a properly aligned address on Direct I/O */ fdc = alloc_fdcache(file, flags); if( (flags & O_DIRECT) && ((long)buf % fdc->c_memalign != 0) ) { buf += fdc->c_memalign - ((long)buf % fdc->c_memalign); } if ((nb = read(fd, buf, length)) == -1) { sprintf(errbuf, "Could not read %d bytes from %s for verification: %s (%d)\n\tread(%d, 0x%p, %d)\n\tbuf %% alignment(%d) = %ld\n", length, file, SYSERR, errno, fd, buf, length, fdc->c_memalign, (long)buf % fdc->c_memalign); return errbuf; } if (nb != length) { sprintf(errbuf, "Read wrong # bytes from %s. Expected %d, got %d\n", file, length, nb); return errbuf; } if( (em = (*Data_Check)(buf, offset, length, pattern, pattern_length, patshift)) != NULL ) { ep = errbuf; ep += sprintf(ep, "*** DATA COMPARISON ERROR ***\n"); ep += sprintf(ep, "check_file(%s, %d, %d, %s, %d, %d) failed\n\n", file, offset, length, pattern, pattern_length, patshift); ep += sprintf(ep, "Comparison fd is %d, with open flags %#o\n", fd, flags); strcpy(ep, em); return(errbuf); } return NULL; } /* * Function to single-thread stdio output. */ int doio_fprintf(FILE *stream, char *format, ...) { static int pid = -1; char *date; int rval; struct flock flk; va_list arglist; date = hms(time(0)); if (pid == -1) { pid = getpid(); } flk.l_whence = flk.l_start = flk.l_len = 0; flk.l_type = F_WRLCK; fcntl(fileno(stream), F_SETLKW, &flk); va_start(arglist, format); rval = fprintf(stream, "\n%s%s (%5d) %s\n", Prog, TagName, pid, date); rval += fprintf(stream, "---------------------\n"); vfprintf(stream, format, arglist); va_end(arglist); fflush(stream); flk.l_type = F_UNLCK; fcntl(fileno(stream), F_SETLKW, &flk); return rval; } /* * Simple function for allocating core memory. Uses Memsize and Memptr to * keep track of the current amount allocated. */ int alloc_mem(nbytes) int nbytes; { char *cp; void *addr; int me = 0, flags, key, shmid; static int mturn = 0; /* which memory type to use */ struct memalloc *M; char filename[255]; #ifdef linux struct shmid_ds shm_ds; bzero( &shm_ds, sizeof(struct shmid_ds) ); #endif /* nbytes = -1 means "free all allocated memory" */ if( nbytes == -1 ) { for(me=0; me < Nmemalloc; me++) { if(Memalloc[me].space == NULL) continue; switch(Memalloc[me].memtype) { case MEM_DATA: free(Memalloc[me].space); Memalloc[me].space = NULL; Memptr = NULL; Memsize = 0; break; case MEM_SHMEM: shmdt(Memalloc[me].space); Memalloc[me].space = NULL; shmctl(Memalloc[me].fd, IPC_RMID, &shm_ds); break; case MEM_MMAP: munmap(Memalloc[me].space, Memalloc[me].size); close(Memalloc[me].fd); if(Memalloc[me].flags & MEMF_FILE) { unlink(Memalloc[me].name); } Memalloc[me].space = NULL; break; default: doio_fprintf(stderr, "alloc_mem: HELP! Unknown memory space type %d index %d\n", Memalloc[me].memtype, me); break; } } return 0; } /* * Select a memory area (currently round-robbin) */ if(mturn >= Nmemalloc) mturn=0; M = &Memalloc[mturn]; switch(M->memtype) { case MEM_DATA: if( nbytes > M->size ) { if( M->space != NULL ){ free(M->space); } M->space = NULL; M->size = 0; } if( M->space == NULL ) { if( (cp = malloc( nbytes )) == NULL ) { doio_fprintf(stderr, "malloc(%d) failed: %s (%d)\n", nbytes, SYSERR, errno); return -1; } M->space = (void *)cp; M->size = nbytes; } break; case MEM_MMAP: if( nbytes > M->size ) { if( M->space != NULL ) { munmap(M->space, M->size); close(M->fd); if( M->flags & MEMF_FILE ) unlink( M->name ); } M->space = NULL; M->size = 0; } if( M->space == NULL ) { if(strchr(M->name, '%')) { sprintf(filename, M->name, getpid()); M->name = strdup(filename); } if( (M->fd = open(M->name, O_CREAT|O_RDWR, 0666)) == -1) { doio_fprintf(stderr, "alloc_mmap: error %d (%s) opening '%s'\n", errno, SYSERR, M->name); return(-1); } addr = NULL; flags = 0; M->size = nbytes * 4; /* bias addr if MEMF_ADDR | MEMF_FIXADDR */ /* >>> how to pick a memory address? */ /* bias flags on MEMF_PRIVATE etc */ if(M->flags & MEMF_PRIVATE) flags |= MAP_PRIVATE; if(M->flags & MEMF_SHARED) flags |= MAP_SHARED; /*printf("alloc_mem, about to mmap, fd=%d, name=(%s)\n", M->fd, M->name);*/ if( (M->space = mmap(addr, M->size, PROT_READ|PROT_WRITE, flags, M->fd, 0)) == MAP_FAILED) { doio_fprintf(stderr, "alloc_mem: mmap error. errno %d (%s)\n\tmmap(addr 0x%x, size %d, read|write 0x%x, mmap flags 0x%x [%#o], fd %d, 0)\n\tfile %s\n", errno, SYSERR, addr, M->size, PROT_READ|PROT_WRITE, flags, M->flags, M->fd, M->name); doio_fprintf(stderr, "\t%s%s%s%s%s", (flags & MAP_PRIVATE) ? "private " : "", (flags & MAP_SHARED) ? "shared" : ""); return(-1); } } break; case MEM_SHMEM: if( nbytes > M->size ) { if( M->space != NULL ) { shmctl( M->fd, IPC_RMID, &shm_ds ); } M->space = NULL; M->size = 0; } if(M->space == NULL) { if(!strcmp(M->name, "private")) { key = IPC_PRIVATE; } else { sscanf(M->name, "%i", &key); } M->size = M->nblks ? M->nblks * 512 : nbytes; if( nbytes > M->size ){ #ifdef DEBUG doio_fprintf(stderr, "MEM_SHMEM: nblks(%d) too small: nbytes=%d Msize=%d, skipping this req.\n", M->nblks, nbytes, M->size ); #endif return SKIP_REQ; } shmid = shmget(key, M->size, IPC_CREAT|0666); if( shmid == -1 ) { doio_fprintf(stderr, "shmget(0x%x, %d, CREAT) failed: %s (%d)\n", key, M->size, SYSERR, errno); return(-1); } M->fd = shmid; M->space = shmat(shmid, NULL, SHM_RND); if( M->space == (void *)-1 ) { doio_fprintf(stderr, "shmat(0x%x, NULL, SHM_RND) failed: %s (%d)\n", shmid, SYSERR, errno); return(-1); } } break; default: doio_fprintf(stderr, "alloc_mem: HELP! Unknown memory space type %d index %d\n", Memalloc[me].memtype, mturn); break; } Memptr = M->space; Memsize = M->size; mturn++; return 0; } /* * Function to maintain a file descriptor cache, so that doio does not have * to do so many open() and close() calls. Descriptors are stored in the * cache by file name, and open flags. Each entry also has a _rtc value * associated with it which is used in aging. If doio cannot open a file * because it already has too many open (ie. system limit hit) it will close * the one in the cache that has the oldest _rtc value. * * If alloc_fd() is called with a file of NULL, it will close all descriptors * in the cache, and free the memory in the cache. */ int alloc_fd(file, oflags) char *file; int oflags; { struct fd_cache *fdc; struct fd_cache *alloc_fdcache(char *file, int oflags); fdc = alloc_fdcache(file, oflags); if(fdc != NULL) return(fdc->c_fd); else return(-1); } struct fd_cache * alloc_fdcache(file, oflags) char *file; int oflags; { int fd; struct fd_cache *free_slot, *oldest_slot, *cp; static int cache_size = 0; static struct fd_cache *cache = NULL; struct dioattr finfo; /* * If file is NULL, it means to free up the fd cache. */ if (file == NULL && cache != NULL) { for (cp = cache; cp < &cache[cache_size]; cp++) { if (cp->c_fd != -1) { close(cp->c_fd); } if (cp->c_memaddr != NULL) { munmap(cp->c_memaddr, cp->c_memlen); } } free(cache); cache = NULL; cache_size = 0; return 0; } free_slot = NULL; oldest_slot = NULL; /* * Look for a fd in the cache. If one is found, return it directly. * Otherwise, when this loop exits, oldest_slot will point to the * oldest fd slot in the cache, and free_slot will point to an * unoccupied slot if there are any. */ for (cp = cache; cp != NULL && cp < &cache[cache_size]; cp++) { if (cp->c_fd != -1 && cp->c_oflags == oflags && strcmp(cp->c_file, file) == 0) { cp->c_rtc = Reqno; return cp; } if (cp->c_fd == -1) { if (free_slot == NULL) { free_slot = cp; } } else { if (oldest_slot == NULL || cp->c_rtc < oldest_slot->c_rtc) { oldest_slot = cp; } } } /* * No matching file/oflags pair was found in the cache. Attempt to * open a new fd. */ if ((fd = open(file, oflags, 0666)) < 0) { if (errno != EMFILE) { doio_fprintf(stderr, "Could not open file %s with flags %#o (%s): %s (%d)\n", file, oflags, format_oflags(oflags), SYSERR, errno); alloc_mem(-1); exit(E_SETUP); } /* * If we get here, we have as many open fd's as we can have. * Close the oldest one in the cache (pointed to by * oldest_slot), and attempt to re-open. */ close(oldest_slot->c_fd); oldest_slot->c_fd = -1; free_slot = oldest_slot; if ((fd = open(file, oflags, 0666)) < 0) { doio_fprintf(stderr, "Could not open file %s with flags %#o (%s): %s (%d)\n", file, oflags, format_oflags(oflags), SYSERR, errno); alloc_mem(-1); exit(E_SETUP); } } /*printf("alloc_fd: new file %s flags %#o fd %d\n", file, oflags, fd);*/ /* * If we get here, fd is our open descriptor. If free_slot is NULL, * we need to grow the cache, otherwise free_slot is the slot that * should hold the fd info. */ if (free_slot == NULL) { cache = (struct fd_cache *)realloc(cache, sizeof(struct fd_cache) * (FD_ALLOC_INCR + cache_size)); if (cache == NULL) { doio_fprintf(stderr, "Could not malloc() space for fd chace"); alloc_mem(-1); exit(E_SETUP); } cache_size += FD_ALLOC_INCR; for (cp = &cache[cache_size-FD_ALLOC_INCR]; cp < &cache[cache_size]; cp++) { cp->c_fd = -1; } free_slot = &cache[cache_size - FD_ALLOC_INCR]; } /* * finally, fill in the cache slot info */ free_slot->c_fd = fd; free_slot->c_oflags = oflags; strcpy(free_slot->c_file, file); free_slot->c_rtc = Reqno; if (oflags & O_DIRECT) { char *dio_env; if (xfsctl(file, fd, XFS_IOC_DIOINFO, &finfo) == -1) { finfo.d_mem = 1; finfo.d_miniosz = 1; finfo.d_maxiosz = 1; } dio_env = getenv("XFS_DIO_MIN"); if (dio_env) finfo.d_mem = finfo.d_miniosz = atoi(dio_env); } else { finfo.d_mem = 1; finfo.d_miniosz = 1; finfo.d_maxiosz = 1; } free_slot->c_memalign = finfo.d_mem; free_slot->c_miniosz = finfo.d_miniosz; free_slot->c_maxiosz = finfo.d_maxiosz; free_slot->c_memaddr = NULL; free_slot->c_memlen = 0; return free_slot; } /* * * Signal Handling Section * * */ void cleanup_handler() { havesigint=1; /* in case there's a followup signal */ alloc_mem(-1); exit(0); } void die_handler(sig) int sig; { doio_fprintf(stderr, "terminating on signal %d\n", sig); alloc_mem(-1); exit(1); } void sigbus_handler(sig) int sig; { /* See sigbus_handler() in the 'ifdef sgi' case for details. Here, we don't have the siginfo stuff so the guess is weaker but we'll do it anyway. */ if( active_mmap_rw && havesigint ) cleanup_handler(); else die_handler(sig); } void noop_handler(sig) int sig; { return; } /* * SIGINT handler for the parent (original doio) process. It simply sends * a SIGINT to all of the doio children. Since they're all in the same * pgrp, this can be done with a single kill(). */ void sigint_handler() { int i; for (i = 0; i < Nchildren; i++) { if (Children[i] != -1) { kill(Children[i], SIGINT); } } } /* * Signal handler used to inform a process when async io completes. Referenced * in do_read() and do_write(). Note that the signal handler is not * re-registered. */ void aio_handler(sig) int sig; { int i; struct aio_info *aiop; for (i = 0; i < sizeof(Aio_Info) / sizeof(Aio_Info[0]); i++) { aiop = &Aio_Info[i]; if (aiop->strategy == A_SIGNAL && aiop->sig == sig) { aiop->signalled++; if (aio_done(aiop)) { aiop->done++; } } } } /* * dump info on all open aio slots */ void dump_aio() { int i, count; count=0; for (i = 0; i < sizeof(Aio_Info) / sizeof(Aio_Info[0]); i++) { if (Aio_Info[i].busy) { count++; fprintf(stderr, "Aio_Info[%03d] id=%d fd=%d signal=%d signaled=%d\n", i, Aio_Info[i].id, Aio_Info[i].fd, Aio_Info[i].sig, Aio_Info[i].signalled); fprintf(stderr, "\tstrategy=%s\n", format_strat(Aio_Info[i].strategy)); } } fprintf(stderr, "%d active async i/os\n", count); } struct aio_info * aio_slot(aio_id) int aio_id; { int i; static int id = 1; struct aio_info *aiop; aiop = NULL; for (i = 0; i < sizeof(Aio_Info) / sizeof(Aio_Info[0]); i++) { if (aio_id == -1) { if (! Aio_Info[i].busy) { aiop = &Aio_Info[i]; aiop->busy = 1; aiop->id = id++; break; } } else { if (Aio_Info[i].busy && Aio_Info[i].id == aio_id) { aiop = &Aio_Info[i]; break; } } } if( aiop == NULL ){ doio_fprintf(stderr,"aio_slot(%d) not found. Request %d\n", aio_id, Reqno); dump_aio(); alloc_mem(-1); exit(E_INTERNAL); } return aiop; } int aio_register(fd, strategy, sig) int fd; int strategy; int sig; { struct aio_info *aiop; void aio_handler(); struct sigaction sa; aiop = aio_slot(-1); aiop->fd = fd; aiop->strategy = strategy; aiop->done = 0; if (strategy == A_SIGNAL) { aiop->sig = sig; aiop->signalled = 0; sa.sa_handler = aio_handler; sa.sa_flags = 0; sigemptyset(&sa.sa_mask); sigaction(sig, &sa, &aiop->osa); } else { aiop->sig = -1; aiop->signalled = 0; } return aiop->id; } int aio_unregister(aio_id) int aio_id; { struct aio_info *aiop; aiop = aio_slot(aio_id); if (aiop->strategy == A_SIGNAL) { sigaction(aiop->sig, &aiop->osa, NULL); } aiop->busy = 0; return 0; } #ifndef linux int aio_wait(aio_id) int aio_id; { #ifdef RECALL_SIZEOF long mask[RECALL_SIZEOF]; #endif sigset_t sigset; struct aio_info *aiop; /*printf("aio_wait: errno %d return %d\n", aiop->aio_errno, aiop->aio_ret);*/ return 0; } #endif /* !linux */ /* * Format specified time into HH:MM:SS format. t is the time to format * in seconds (as returned from time(2)). */ char * hms(t) time_t t; { static char ascii_time[9]; struct tm *ltime; ltime = localtime(&t); strftime(ascii_time, sizeof(ascii_time), "%H:%M:%S", ltime); return ascii_time; } /* * Simple routine to check if an async io request has completed. */ int aio_done(struct aio_info *ainfo) { return -1; /* invalid */ } /* * Routine to handle upanic() - it first attempts to set the panic flag. If * the flag cannot be set, an error message is issued. A call to upanic * with PA_PANIC is then done unconditionally, in case the panic flag was set * from outside the program (as with the panic(8) program). * * Note - we only execute the upanic code if -U was used, and the passed in * mask is set in the Upanic_Conditions bitmask. */ void doio_upanic(mask) int mask; { if (U_opt == 0 || (mask & Upanic_Conditions) == 0) { return; } doio_fprintf(stderr, "WARNING - upanic() failed\n"); } /* * Parse cmdline options/arguments and set appropriate global variables. * If the cmdline is valid, return 0 to caller. Otherwise exit with a status * of 1. */ int parse_cmdline(argc, argv, opts) int argc; char **argv; char *opts; { int c; char cc, *cp, *tok = NULL; extern int opterr; extern int optind; extern char *optarg; struct smap *s; char *memargs[NMEMALLOC]; int nmemargs, ma; void parse_memalloc(char *arg); void parse_delay(char *arg); void dump_memalloc(); if (*argv[0] == '-') { argv[0]++; Execd = 1; } if ((Prog = strrchr(argv[0], '/')) == NULL) { Prog = argv[0]; } else { Prog++; } opterr = 0; while ((c = getopt(argc, argv, opts)) != EOF) { switch ((char)c) { case 'a': a_opt++; break; case 'C': C_opt++; tok = strtok(optarg, ","); for(s=checkmap; s->string != NULL; s++) if(!strcmp(s->string, optarg)) break; if (s->string == NULL) { fprintf(stderr, "%s%s: Illegal -C arg (%s). Must be one of: ", Prog, TagName, tok); for (s = checkmap; s->string != NULL; s++) fprintf(stderr, "%s ", s->string); fprintf(stderr, "\n"); exit(1); } switch(s->value) { case C_DEFAULT: Data_Fill = doio_pat_fill; Data_Check = doio_pat_check; break; default: fprintf(stderr, "%s%s: Unrecognised -C arg '%s' %d", Prog, TagName, s->string, s->value); exit(1); } break; case 'd': /* delay between i/o ops */ parse_delay(optarg); break; case 'e': if (Npes > 1 && Nprocs > 1) { fprintf(stderr, "%s%s: Warning - Program is a multi-pe application - exec option is ignored.\n", Prog, TagName); } e_opt++; break; case 'h': help(stdout); exit(0); break; case 'k': k_opt++; break; case 'm': Message_Interval = strtol(optarg, &cp, 10); if (*cp != '\0' || Message_Interval < 0) { fprintf(stderr, "%s%s: Illegal -m arg (%s): Must be an integer >= 0\n", Prog, TagName, optarg); exit(1); } m_opt++; break; case 'M': /* memory allocation types */ nmemargs = string_to_tokens(optarg, memargs, 32, ","); for(ma=0; ma < nmemargs; ma++) { parse_memalloc(memargs[ma]); } /*dump_memalloc();*/ M_opt++; break; case 'N': sprintf( TagName, "(%.37s)", optarg ); break; case 'n': Nprocs = strtol(optarg, &cp, 10); if (*cp != '\0' || Nprocs < 1) { fprintf(stderr, "%s%s: Illegal -n arg (%s): Must be integer > 0\n", Prog, TagName, optarg); exit(E_USAGE); } if (Npes > 1 && Nprocs > 1) { fprintf(stderr, "%s%s: Program has been built as a multi-pe app. -n1 is the only nprocs value allowed\n", Prog, TagName); exit(E_SETUP); } n_opt++; break; case 'r': Release_Interval = strtol(optarg, &cp, 10); if (*cp != '\0' || Release_Interval < 0) { fprintf(stderr, "%s%s: Illegal -r arg (%s): Must be integer >= 0\n", Prog, TagName, optarg); exit(E_USAGE); } r_opt++; break; case 'w': Write_Log = optarg; w_opt++; break; case 'v': v_opt++; break; case 'V': if (strcasecmp(optarg, "sync") == 0) { Validation_Flags = O_SYNC; } else if (strcasecmp(optarg, "buffered") == 0) { Validation_Flags = 0; } else if (strcasecmp(optarg, "direct") == 0) { Validation_Flags = O_DIRECT; } else { if (sscanf(optarg, "%i%c", &Validation_Flags, &cc) != 1) { fprintf(stderr, "%s: Invalid -V argument (%s) - must be a decimal, hex, or octal\n", Prog, optarg); fprintf(stderr, " number, or one of the following strings: 'sync',\n"); fprintf(stderr, " 'buffered', 'parallel', 'ldraw', or 'raw'\n"); exit(E_USAGE); } } V_opt++; break; case 'U': tok = strtok(optarg, ","); while (tok != NULL) { for (s = Upanic_Args; s->string != NULL; s++) if (strcmp(s->string, tok) == 0) break; if (s->string == NULL) { fprintf(stderr, "%s%s: Illegal -U arg (%s). Must be one of: ", Prog, TagName, tok); for (s = Upanic_Args; s->string != NULL; s++) fprintf(stderr, "%s ", s->string); fprintf(stderr, "\n"); exit(1); } Upanic_Conditions |= s->value; tok = strtok(NULL, ","); } U_opt++; break; case '?': usage(stderr); exit(E_USAGE); break; } } /* * Supply defaults */ if (! C_opt) { Data_Fill = doio_pat_fill; Data_Check = doio_pat_check; } if (! U_opt) Upanic_Conditions = 0; if (! n_opt) Nprocs = 1; if (! r_opt) Release_Interval = DEF_RELEASE_INTERVAL; if (! M_opt) { Memalloc[Nmemalloc].memtype = MEM_DATA; Memalloc[Nmemalloc].flags = 0; Memalloc[Nmemalloc].name = NULL; Memalloc[Nmemalloc].space = NULL; Nmemalloc++; } /* * Initialize input stream */ if (argc == optind) { Infile = NULL; } else { Infile = argv[optind++]; } if (argc != optind) { usage(stderr); exit(E_USAGE); } return 0; } /* * Parse memory allocation types * * Types are: * Data * T3E-shmem:blksize[:nblks] * SysV-shmem:shmid:blksize:nblks * if shmid is "private", use IPC_PRIVATE * and nblks is not required * * mmap:flags:filename:blksize[:nblks] * flags are one of: * p - private (MAP_PRIVATE) * a - private, MAP_AUTORESRV * l - local (MAP_LOCAL) * s - shared (nblks required) * * plus any of: * f - fixed address (MAP_FIXED) * A - use an address without MAP_FIXED * a - autogrow (map once at startup) * * mmap:flags:devzero * mmap /dev/zero (shared not allowd) * maps the first 4096 bytes of /dev/zero * * - put a directory at the beginning of the shared * regions saying what pid has what region. * DIRMAGIC * BLKSIZE * NBLKS * nblks worth of directories - 1 int pids */ void parse_memalloc(char *arg) { char *allocargs[NMEMALLOC]; int nalloc; struct memalloc *M; if(Nmemalloc >= NMEMALLOC) { doio_fprintf(stderr, "Error - too many memory types (%d).\n", Nmemalloc); return; } M = &Memalloc[Nmemalloc]; nalloc = string_to_tokens(arg, allocargs, 32, ":"); if(!strcmp(allocargs[0], "data")) { M->memtype = MEM_DATA; M->flags = 0; M->name = NULL; M->space = NULL; Nmemalloc++; if(nalloc >= 2) { if(strchr(allocargs[1], 'p')) M->flags |= MEMF_MPIN; } } else if(!strcmp(allocargs[0], "mmap")) { /* mmap:flags:filename[:size] */ M->memtype = MEM_MMAP; M->flags = 0; M->space = NULL; if(nalloc >= 1) { if(strchr(allocargs[1], 'p')) M->flags |= MEMF_PRIVATE; if(strchr(allocargs[1], 'a')) M->flags |= MEMF_AUTORESRV; if(strchr(allocargs[1], 'l')) M->flags |= MEMF_LOCAL; if(strchr(allocargs[1], 's')) M->flags |= MEMF_SHARED; if(strchr(allocargs[1], 'f')) M->flags |= MEMF_FIXADDR; if(strchr(allocargs[1], 'A')) M->flags |= MEMF_ADDR; if(strchr(allocargs[1], 'G')) M->flags |= MEMF_AUTOGROW; if(strchr(allocargs[1], 'U')) M->flags |= MEMF_FILE; } else { M->flags |= MEMF_PRIVATE; } if(nalloc > 2) { if(!strcmp(allocargs[2], "devzero")) { M->name = "/dev/zero"; if(M->flags & ((MEMF_PRIVATE|MEMF_LOCAL) == 0)) M->flags |= MEMF_PRIVATE; } else { M->name = allocargs[2]; } } else { M->name = "/dev/zero"; if(M->flags & ((MEMF_PRIVATE|MEMF_LOCAL) == 0)) M->flags |= MEMF_PRIVATE; } Nmemalloc++; } else if(!strcmp(allocargs[0], "shmem")) { /* shmem:shmid:size */ M->memtype = MEM_SHMEM; M->flags = 0; M->space = NULL; if(nalloc >= 2) { M->name = allocargs[1]; } else { M->name = NULL; } if(nalloc >= 3) { sscanf(allocargs[2], "%i", &M->nblks); } else { M->nblks = 0; } if(nalloc >= 4) { if(strchr(allocargs[3], 'p')) M->flags |= MEMF_MPIN; } Nmemalloc++; } else { doio_fprintf(stderr, "Error - unknown memory type '%s'.\n", allocargs[0]); exit(1); } } void dump_memalloc() { int ma; char *mt; if(Nmemalloc == 0) { printf("No memory allocation strategies devined\n"); return; } for(ma=0; ma < Nmemalloc; ma++) { switch(Memalloc[ma].memtype) { case MEM_DATA: mt = "data"; break; case MEM_SHMEM: mt = "shmem"; break; case MEM_MMAP: mt = "mmap"; break; default: mt = "unknown"; break; } printf("mstrat[%d] = %d %s\n", ma, Memalloc[ma].memtype, mt); printf("\tflags=%#o name='%s' nblks=%d\n", Memalloc[ma].flags, Memalloc[ma].name, Memalloc[ma].nblks); } } /* * -d :