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diff --git a/tests/LTlock.c b/tests/LTlock.c
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+/*
+ * LTlock.c -- Lsof Test locking tests
+ *
+ * V. Abell
+ * Purdue University
+ */
+
+
+/*
+ * Copyright 2002 Purdue Research Foundation, West Lafayette, Indiana
+ * 47907. All rights reserved.
+ *
+ * Written by V. Abell.
+ *
+ * This software is not subject to any license of the American Telephone
+ * and Telegraph Company or the Regents of the University of California.
+ *
+ * Permission is granted to anyone to use this software for any purpose on
+ * any computer system, and to alter it and redistribute it freely, subject
+ * to the following restrictions:
+ *
+ * 1. Neither the authors nor Purdue University are responsible for any
+ * consequences of the use of this software.
+ *
+ * 2. The origin of this software must not be misrepresented, either by
+ * explicit claim or by omission. Credit to the authors and Purdue
+ * University must appear in documentation and sources.
+ *
+ * 3. Altered versions must be plainly marked as such, and must not be
+ * misrepresented as being the original software.
+ *
+ * 4. This notice may not be removed or altered.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright 2002 Purdue Research Foundation.\nAll rights reserved.\n";
+#endif
+
+#include "LsofTest.h"
+#include "lsof_fields.h"
+
+
+#if defined(LT_DIAL_aix)
+/*
+ * AIX-specific items
+ */
+
+#define USE_FCNTL
+#endif /* defined(LT_DIAL_aix) */
+
+
+#if defined(LT_DIAL_bsdi)
+/*
+ * BSDI-specific items
+ */
+
+#define USE_FCNTL
+#endif /* defined(LT_DIAL_bsdi) */
+
+
+#if defined(LT_DIAL_darwin)
+/*
+ * Darwin-specific items
+ */
+
+/*
+ * There is no Darwin USE_* definition, because lock support in lsof for
+ * Darwin is inadequate for this test.
+ */
+#endif /* defined(LT_DIAL_darwin) */
+
+
+#if defined(LT_DIAL_du)
+/*
+ * DEC_OSF/1|Digital_UNIX|Tru64_UNIX-specific items
+ */
+
+#define USE_FCNTL
+#endif /* defined(LT_DIAL_du) */
+
+
+#if defined(LT_DIAL_freebsd)
+/*
+ * FreeBSD-specific items
+ */
+
+#define USE_FCNTL
+#endif /* defined(LT_DIAL_freebsd) */
+
+
+#if defined(LT_DIAL_linux)
+/*
+ * Linux-specific items
+ */
+
+#define USE_FCNTL
+#endif /* defined(LT_DIAL_linux) */
+
+
+#if defined(LT_DIAL_netbsd)
+/*
+ * NetBSD-specific items
+ */
+
+#define USE_FCNTL
+#endif /* defined(LT_DIAL_netbsd) */
+
+
+#if defined(LT_DIAL_openbsd)
+/*
+ * OpenBSD-specific items
+ */
+
+#define USE_FCNTL
+#endif /* defined(LT_DIAL_openbsd) */
+
+
+#if defined(LT_DIAL_hpux)
+/*
+ * HP-UX-specific items
+ */
+
+#define USE_FCNTL
+#endif /* defined(LT_DIAL_hpux) */
+
+
+#if defined(LT_DIAL_ns)
+/*
+ * NEXTSTEP-specific items
+ */
+
+#define USE_FLOCK
+#endif /* defined(LT_DIAL_ns) */
+
+
+#if defined(LT_DIAL_osr)
+/*
+ * OSR-specific items
+ */
+
+#define USE_FCNTL
+#endif /* defined(LT_DIAL_osr) */
+
+
+#if defined(LT_DIAL_ou)
+/*
+ * OpenUNIX-specific items
+ */
+
+#define USE_FCNTL
+#endif /* defined(LT_DIAL_ou) */
+
+
+#if defined(LT_DIAL_openbsd)
+/*
+ * OpenBSD-specific items
+ */
+
+#define USE_FCNTL
+#endif /* defined(LT_DIAL_openbsd) */
+
+
+#if defined(LT_DIAL_solaris)
+/*
+ * Solaris-specific items
+ */
+
+#define USE_FCNTL
+#endif /* defined(solaris) */
+
+
+#if defined(LT_DIAL_uw)
+/*
+ * UnixWare-specific items
+ */
+
+#define USE_FCNTL
+#endif /* defined(LT_DIAL_uw) */
+
+
+#if !defined(USE_FLOCK) && !defined(USE_FCNTL)
+/*
+ * Here begins the version of this program for dialects that don't support
+ * flock() or fcntl() locking.
+ */
+
+
+/*
+ * Main program for dialects that don't support flock() of fcntl() locking.
+ */
+
+int
+main(argc, argv)
+ int argc; /* argument count */
+ char *argv[]; /* arguments */
+{
+ char *pn; /* program name */
+/*
+ * Get program name and issue error message.
+ */
+ if ((pn = (char *)strrchr(argv[0], '/')))
+ pn++;
+ else
+ pn = argv[0];
+ (void) printf("%s ... %s\n", pn, LT_DONT_DO_TEST);
+ return(0);
+}
+#else /* defined(USE_FLOCK) || defined(USE_FCNTL) */
+
+
+/*
+ * Local definitions
+ */
+
+#define FULL_EX_LOCK 0 /* get a full file exclusive lock */
+#define FULL_SH_LOCK 1 /* get a full file shared lock */
+#define PART_EX_LOCK 2 /* get a partial file exclusive lock */
+#define PART_SH_LOCK 3 /* get a partial file shared lock */
+
+
+/*
+ * Globals
+ */
+
+int Fd = -1; /* test file descriptor; open if >= 0 */
+pid_t MyPid = (pid_t)0; /* PID of this process */
+char *Path = (char *)NULL; /* test file path; none if NULL */
+char *Pn = (char *)NULL; /* program name */
+
+
+/*
+ * Local function prototypes
+ */
+
+_PROTOTYPE(static void cleanup,(void));
+_PROTOTYPE(static char *lkfile,(int ty));
+_PROTOTYPE(static char *tstwlsof,(char *opt, char *xlk));
+_PROTOTYPE(static char *unlkfile,(int ty));
+
+
+/*
+ * Main program for dialects that support locking tests.
+ */
+
+int
+main(argc, argv)
+ int argc; /* argument count */
+ char *argv[]; /* arguments */
+{
+ char buf[2048]; /* temporary buffer */
+ char *em; /* error message pointer */
+ int ti; /* temporary index */
+ char *tcp; /* temporary character pointer */
+ int tlen; /* temporary length -- e.g., as
+ * returned by MkStrCpy() */
+ char *tstR = (char *)NULL; /* "R" lock test result */
+ char *tstr = (char *)NULL; /* "r" lock test result */
+ char *tstW = (char *)NULL; /* "W" lock test result */
+ char *tstw = (char *)NULL; /* "w" lock test result */
+ int xv = 0; /* exit value */
+/*
+ * Get program name and PID, issue start message, and build space prefix.
+ */
+ if ((Pn = strrchr(argv[0], '/')))
+ Pn++;
+ else
+ Pn = argv[0];
+ MyPid = getpid();
+ (void) printf("%s ... ", Pn);
+ (void) fflush(stdout);
+ (void) PrtMsg((char *)NULL, Pn);
+/*
+ * Process arguments.
+ */
+ if (ScanArg(argc, argv, "hp:", Pn))
+ xv = 1;
+ if (xv || LTopt_h) {
+ (void) PrtMsg ("usage: [-h] [-p path]", Pn);
+ (void) PrtMsg (" -h print help (this panel)", Pn);
+ (void) PrtMsgX(" -p path define test file path", Pn, cleanup,
+ xv);
+ }
+/*
+ * See if lsof can be executed and can access kernel memory.
+ */
+ if ((em = IsLsofExec()))
+ (void) PrtMsgX(em, Pn, cleanup, 1);
+ if ((em = CanRdKmem()))
+ (void) PrtMsgX(em, Pn, cleanup, 1);
+/*
+ * If a path was supplied in an "-p path" option, use it. Otherwise construct
+ * a path in the CWD.
+ */
+ if (!(Path = LTopt_p)) {
+ (void) snprintf(buf, sizeof(buf), "./config.LTlock%ld",
+ (long)MyPid);
+ buf[sizeof(buf) - 1] = '\0';
+ Path = MkStrCpy(buf, &tlen);
+ }
+/*
+ * Fill buffer for writing to the test file.
+ */
+ for (ti = 0; ti < sizeof(buf); ti++) {
+ buf[ti] = (char)(ti & 0xff);
+ }
+/*
+ * Open a new test file at the specified path.
+ */
+ (void) unlink(Path);
+ if ((Fd = open(Path, O_RDWR|O_CREAT, 0600)) < 0) {
+ (void) fprintf(stderr, "ERROR!!! can't open %s\n", Path);
+
+print_file_error:
+
+ MsgStat = 1;
+ (void) snprintf(buf, sizeof(buf) - 1, " Errno %d: %s",
+ errno, strerror(errno));
+ buf[sizeof(buf) - 1] = '\0';
+ (void) PrtMsgX(buf, Pn, cleanup, 1);
+ }
+/*
+ * Write a buffer load at the beginning of the file.
+ */
+ if (write(Fd, buf, sizeof(buf)) != sizeof(buf)) {
+ (void) fprintf(stderr,
+ "ERROR!!! can't write %d bytes to the beginning of %s\n",
+ (int)sizeof(buf), Path);
+ goto print_file_error;
+ }
+/*
+ * Fsync() the file.
+ */
+ if (fsync(Fd)) {
+ (void) fprintf(stderr, "ERROR!!! can't fsync %s\n", Path);
+ goto print_file_error;
+ }
+/*
+ * Quit (with a hint) if the test file is on an NFS file system.
+ */
+ if (!tstwlsof("-wNa", " ")) {
+ (void) printf("ERROR!!! %s is NFS-mounted.\n", Path);
+ MsgStat = 1;
+ (void) PrtMsg ("Lsof can't report lock information on files that", Pn);
+ (void) PrtMsg ("are located on file systems mounted from a remote", Pn);
+ (void) PrtMsg ("NFS server.\n", Pn);
+ (void) PrtMsg ("Hint: try using \"-p path\" to supply a path in a", Pn);
+ (void) PrtMsg ("non-NFS file system.\n", Pn);
+ (void) PrtMsgX("See 00FAQ and 00TEST for more information.", Pn,
+ cleanup, 1);
+ }
+/*
+ * Get an exclusive lock on the entire file and test it with lsof.
+ */
+ if ((em = lkfile(FULL_EX_LOCK)))
+ (void) PrtMsgX(em, Pn, cleanup, 1);
+ if ((tstW = tstwlsof("-w", "W")))
+ (void) PrtMsg(tstW, Pn);
+/*
+ * Get a shared lock on the entire file and test it with lsof.
+ */
+ if ((em = unlkfile(FULL_EX_LOCK)))
+ (void) PrtMsgX(em, Pn, cleanup, 1);
+ if ((em = lkfile(FULL_SH_LOCK)))
+ (void) PrtMsgX(em, Pn, cleanup, 1);
+ if ((tstR = tstwlsof("-w", "R")))
+ (void) PrtMsg(tstR, Pn);
+
+# if defined(USE_FLOCK)
+/*
+ * If using flock(), skip the byte lock tests.
+ */
+ tstr = tstw = (char *)NULL;
+# endif /* defined(USE_FLOCK) */
+
+# if defined(USE_FCNTL)
+/*
+ * If using fcntl(), do exclusive and shared byte lock tests,
+ */
+ if ((em = unlkfile(FULL_SH_LOCK)))
+ (void) PrtMsgX(em, Pn, cleanup, 1);
+ if ((em = lkfile(PART_EX_LOCK)))
+ (void) PrtMsgX(em, Pn, cleanup, 1);
+ if ((tstw = tstwlsof("-w", "w")))
+ (void) PrtMsg(tstw, Pn);
+ if ((em = unlkfile(PART_EX_LOCK)))
+ (void) PrtMsgX(em, Pn, cleanup, 1);
+ if ((em = lkfile(PART_SH_LOCK)))
+ (void) PrtMsgX(em, Pn, cleanup, 1);
+ if ((tstr = tstwlsof("-w", "r")))
+ (void) PrtMsg(tstr, Pn);
+# endif /* defined(USE_FCNTL) */
+
+/*
+ * Compute exit value and exit.
+ */
+ if (tstr || tstR || tstw || tstW) {
+ tcp = (char *)NULL;
+ xv = 1;
+ } else {
+ tcp = "OK";
+ xv = 0;
+ }
+ (void) PrtMsgX(tcp, Pn, cleanup, xv);
+ return(0);
+}
+
+
+/*
+ * cleanup() -- release resources
+ */
+
+static void
+cleanup()
+{
+ if (Fd >= 0) {
+ (void) close(Fd);
+ Fd = -1;
+ if (Path) {
+ (void) unlink(Path);
+ Path = (char *)NULL;
+ }
+ }
+}
+
+
+/*
+ * lkfile() -- lock the test file
+ */
+
+static char *
+lkfile(ty)
+ int ty; /* a *_*_LOCK requested */
+{
+ char buf[2048]; /* temporary buffer */
+ int ti; /* temporary integer */
+
+# if defined(USE_FLOCK)
+ int flf; /* flock() function */
+# endif /* defined(USE_FLOCK) */
+
+# if defined(USE_FCNTL)
+ struct flock fl; /* flock control structure */
+/*
+ * Check fcntl() lock request.
+ */
+ (void) memset((void *)&fl, 0, sizeof(fl));
+ switch(ty) {
+ case FULL_EX_LOCK:
+ fl.l_type = F_WRLCK;
+ break;
+ case FULL_SH_LOCK:
+ fl.l_type = F_RDLCK;
+ break;
+ case PART_EX_LOCK:
+ fl.l_type = F_WRLCK;
+ fl.l_len = (off_t)1;
+ break;
+ case PART_SH_LOCK:
+ fl.l_type = F_RDLCK;
+ fl.l_len = (off_t)1;
+ break;
+ default:
+ (void) snprintf(buf, sizeof(buf) - 1,
+ "ERROR!!! unknown lock type: %d", ty);
+ buf[sizeof(buf) - 1] = '\0';
+ return(MkStrCpy(buf, &ti));
+ }
+/*
+ * Lock test file with fcntl().
+ */
+ if (fcntl(Fd, F_SETLK, &fl) != -1)
+ return((char *)NULL);
+ (void) snprintf(buf, sizeof(buf) - 1, "ERROR!!! fcntl() lock error: %s",
+ strerror(errno));
+ buf[sizeof(buf) - 1] = '\0';
+ return(MkStrCpy(buf, &ti));
+# endif /* defined(USE_FCNTL) */
+
+# if defined(USE_FLOCK)
+/*
+ * Check flock() lock request.
+ */
+ switch(ty) {
+ case FULL_EX_LOCK:
+ flf = LOCK_EX;
+ break;
+ case FULL_SH_LOCK:
+ flf = LOCK_SH;
+ break;
+ case PART_EX_LOCK:
+ case PART_SH_LOCK:
+ return("ERROR!!! flock() doesn't support partial locks");
+ break;
+ default:
+ (void) snprintf(buf, sizeof(buf) - 1,
+ "ERROR!!! unknown flock() type: %d", ty);
+ buf[sizeof(buf) - 1] = '\0';
+ return(MkStrCpy(buf, &ti));
+ }
+/*
+ * Acquire lock.
+ */
+ if (!flock(Fd, flf))
+ return((char *)NULL);
+ (void) snprintf(buf, sizeof(buf) - 1,
+ "ERROR!!! flock() %s lock failed: %s",
+ (flf == LOCK_EX) ? "exclusive" : "shared",
+ strerror(errno));
+ buf[sizeof(buf) - 1] = '\0';
+ return(MkStrCpy(buf, &ti));
+# endif /* defined(USE_FLOCK) */
+
+}
+
+
+/*
+ * tstwlsof() -- test the open file with lsof
+ */
+
+static char *
+tstwlsof(opt, xlk)
+ char *opt; /* extra lsof options */
+ char *xlk; /* expected lock value */
+{
+ char buf[2048]; /* temporary buffer */
+ LTfldo_t *cmdp; /* command pointer */
+ LTfldo_t *devp; /* device pointer */
+ char *cem; /* current error message pointer */
+ int ff = 0; /* file found status */
+ LTfldo_t *fop; /* field output pointer */
+ LTfldo_t *inop; /* inode number pointer */
+ LTfldo_t *lkp; /* lock pointer */
+ LTdev_t lsofdc; /* lsof device components */
+ int nf; /* number of fields */
+ LTfldo_t *nmp; /* file name pointer */
+ char *opv[4]; /* option vector for ExecLsof() */
+ char *pem = (char *)NULL; /* previous error message pointer */
+ pid_t pid; /* PID */
+ int pids = 0; /* PID found status */
+ struct stat sb; /* stat(2) buffer */
+ LTdev_t stdc; /* stat(2) device components */
+ char *tcp; /* temporary character pointer */
+ int ti; /* temporary integer */
+ LTfldo_t *typ; /* file type pointer */
+/*
+ * Make sure there is an expected lock value.
+ */
+ if (!xlk || !*xlk)
+ (void) PrtMsgX("ERROR!!! no expected lock value", Pn, cleanup, 1);
+/*
+ * Get test file's information.
+ */
+ if (stat(Path, &sb)) {
+ (void) snprintf(buf, sizeof(buf) - 1,
+ "ERROR!!! can't stat(2) %s: %s", Path, strerror(errno));
+ buf[sizeof(buf) - 1] = '\0';
+ (void) PrtMsgX(buf, Pn, cleanup, 1);
+ }
+/*
+ * Extract components from test file's device number.
+ */
+ if ((cem = ConvStatDev(&sb.st_dev, &stdc)))
+ (void) PrtMsgX(cem, Pn, cleanup, 1);
+/*
+ * Complete the option vector and start lsof execution.
+ */
+ ti = 0;
+ if (opt && *opt)
+ opv[ti++] = opt;
+
+#if defined(USE_LSOF_C_OPT)
+ opv[ti++] = "-C";
+#endif /* defined(USE_LSOF_C_OPT) */
+
+ opv[ti++] = Path;
+ opv[ti] = (char *)NULL;
+ if ((cem = ExecLsof(opv)))
+ return(cem);
+/*
+ * Read lsof output.
+ */
+ while (!ff && (fop = RdFrLsof(&nf, &cem))) {
+ if (cem) {
+ if (pem)
+ (void) PrtMsg(pem, Pn);
+ return(cem);
+ }
+ switch (fop->ft) {
+ case LSOF_FID_PID:
+
+ /*
+ * This is a process information line.
+ */
+ pid = (pid_t)atoi(fop->v);
+ pids = 1;
+ cmdp = (LTfldo_t *)NULL;
+ for (fop++, ti = 1; ti < nf; fop++, ti++) {
+ switch (fop->ft) {
+ case LSOF_FID_CMD:
+ cmdp = fop;
+ break;
+ }
+ }
+ if (!cmdp || (pid != MyPid))
+ pids = 0;
+ break;
+ case LSOF_FID_FD:
+
+ /*
+ * This is a file descriptor line. Make sure its number matches the
+ * test file's descriptor number.
+ *
+ * Scan for lock and name fields.
+ */
+ if (!pids)
+ break;
+ for (ti = 0, tcp = fop->v; *tcp; tcp++) {
+
+ /*
+ * Convert file descriptor to a number.
+ */
+ if (*tcp == ' ')
+ continue;
+ if (((int)*tcp < (int)'0') || ((int)*tcp > (int)'9')) {
+ ti = -1;
+ break;
+ }
+ ti = (ti * 10) + (int)*tcp - (int)'0';
+ }
+ if (Fd != ti)
+ break;
+ devp = inop = lkp = nmp = (LTfldo_t *)NULL;
+ for (fop++, ti = 1; ti < nf; fop++, ti++) {
+ switch(fop->ft) {
+ case LSOF_FID_DEVN:
+ devp = fop;
+ break;
+ case LSOF_FID_INODE:
+ inop = fop;
+ break;
+ case LSOF_FID_LOCK:
+ lkp = fop;
+ break;
+ case LSOF_FID_NAME:
+ nmp = fop;
+ break;
+ case LSOF_FID_TYPE:
+ typ = fop;
+ break;
+ }
+ }
+ /*
+ * Check the results of the file descriptor field scan.
+ *
+ * (Don't compare path names because of symbolic link interference.)
+ */
+ if (!devp || !inop || !nmp || !typ)
+ break;
+ if (strcasecmp(typ->v, "reg") && strcasecmp(typ->v, "vreg"))
+ break;
+ if (ConvLsofDev(devp->v, &lsofdc))
+ break;
+ if ((stdc.maj != lsofdc.maj)
+ || (stdc.min != lsofdc.min)
+ || (stdc.unit != lsofdc.unit))
+ break;
+ (void) snprintf(buf, sizeof(buf) - 1, "%u",
+ (unsigned int)sb.st_ino);
+ buf[sizeof(buf) - 1] = '\0';
+ if (strcmp(inop->v, buf))
+ break;
+ /*
+ * The specified file has been located. Check its lock status.
+ */
+ ff = 1;
+ if (!lkp || strcmp(lkp->v, xlk)) {
+ if (pem)
+ (void) PrtMsg(pem, Pn);
+ (void) snprintf(buf, sizeof(buf) - 1,
+ "lock mismatch: expected %s, got \"%s\"", xlk,
+ lkp ? lkp->v : "(none)");
+ pem = MkStrCpy(buf, &ti);
+ }
+ break;
+ }
+ }
+ (void) StopLsof();
+ if (!ff) {
+ if (pem)
+ (void) PrtMsg(pem, Pn);
+ (void) snprintf(buf, sizeof(buf) - 1,
+ "lock test file %s not found by lsof", Path);
+ buf[sizeof(buf) - 1] = '\0';
+ return(MkStrCpy(buf, &ti));
+ }
+ return(pem);
+}
+
+
+/*
+ * unlkfile() -- unlock the test file
+ */
+
+static char *
+unlkfile(ty)
+ int ty; /* current *_*_LOCK lock typ */
+{
+ char buf[2048]; /* temporary buffer */
+ int ti; /* temporary integer */
+
+# if defined(USE_FCNTL)
+ struct flock fl; /* flock control structure */
+/*
+ * Check current fcntl() lock type.
+ */
+ (void) memset((void *)&fl, 0, sizeof(fl));
+ switch(ty) {
+ case FULL_EX_LOCK:
+ case FULL_SH_LOCK:
+ break;
+ case PART_EX_LOCK:
+ case PART_SH_LOCK:
+ fl.l_len = (off_t)1;
+ break;
+ default:
+ (void) snprintf(buf, sizeof(buf) - 1,
+ "ERROR!!! unknown unlock type: %d", ty);
+ buf[sizeof(buf) - 1] = '\0';
+ return(MkStrCpy(buf, &ti));
+ }
+/*
+ * Unlock test file with fcntl().
+ */
+ fl.l_type = F_UNLCK;
+ if (fcntl(Fd, F_SETLK, &fl) != -1)
+ return((char *)NULL);
+ (void) snprintf(buf, sizeof(buf) - 1, "ERROR!!! fcntl() unlock error: %s",
+ strerror(errno));
+ buf[sizeof(buf) - 1] = '\0';
+ return(MkStrCpy(buf, &ti));
+# endif /* defined(USE_FCNTL) */
+
+# if defined(USE_FLOCK)
+/*
+ * Check current flock() lock type.
+ */
+ switch(ty) {
+ case FULL_EX_LOCK:
+ case FULL_SH_LOCK:
+ break;
+ default:
+ (void) snprintf(buf, sizeof(buf) - 1,
+ "ERROR!!! unknown unlock type: %s", ty);
+ buf[sizeof(buf) - 1] = '\0';
+ return(MkStrCpy(buf, &ti));
+ }
+/*
+ * Unlock file with flock().
+ */
+ if (!flock(Fd, LOCK_UN))
+ return((char *)NULL);
+ (void) snprintf(buf, sizeof(buf) - 1, "ERROR!!! flock() unlock error: %s",
+ strerror(errno));
+ return(MkStrCpy(buf, &ti));
+# endif /* defined(USE_FLOCK) */
+
+}
+#endif /* !defined(USE_FLOCK) && !defined(USE_FCNTL) */
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