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-rw-r--r--tests/LTnfs.c531
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diff --git a/tests/LTnfs.c b/tests/LTnfs.c
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+/*
+ * LTnfs.c -- Lsof Test NFS 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"
+
+
+/*
+ * Pre-definitions that may be revoked by specific dialects
+ */
+
+#define DO_TEST /* do the test */
+
+
+#if defined(LT_DIAL_darwin)
+/*
+ * Darwin-specific items
+ */
+
+# if LT_VERS<800
+#undef DO_TEST
+# endif /* LT_VERS<800 */
+#endif /* defined(LT_DIAL_darwin) */
+
+
+/*
+ * Globals
+ */
+
+int Fd = -1; /* test file descriptor; open if >= 0 */
+pid_t MyPid = (pid_t)0; /* PID of this process */
+int NFstat = 0; /* NFS file status: 0 == closed
+ * 1 == not created by this
+ * these and must not be
+ * unlinked
+ * 2 == created by this test
+ * and must be unlinked
+ */
+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 *FindNFSfile,(int *ff, char *szbuf));
+
+
+/*
+ * Main program
+ */
+
+int
+main(argc, argv)
+ int argc; /* argument count */
+ char *argv[]; /* arguments */
+{
+ char buf[2048]; /* temporary buffer */
+ char *em; /* error message pointer */
+ int ff; /* FindNFSfile() file-found flag */
+ int sz; /* file size (if created) */
+ char szbuf[32]; /* created test file size in ASCII */
+ int ti; /* temporary index */
+ 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);
+ PrtMsg((char *)NULL, Pn);
+
+#if !defined(DO_TEST)
+/*
+ * If the dialect has disabled the test, echo that result and exit with
+ * a successful return code.
+ */
+ (void) PrtMsgX(LT_DONT_DO_TEST, Pn, cleanup, 0);
+#endif /* !defined(DO_TEST) */
+
+/*
+ * Process arguments.
+ */
+ if (ScanArg(argc, argv, "hp:", Pn))
+ xv = 1;
+ if (xv || LTopt_h) {
+ (void) PrtMsg("usage: [-h] [-p path]", Pn);
+ PrtMsg (" -h print help (this panel)", Pn);
+ 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);
+/*
+ * Process the file path and open it.
+ */
+ if ((Path = LTopt_p)) {
+
+ /*
+ * The file path was supplied. Open the file read-only.
+ */
+ if ((Fd = open(Path, O_RDONLY, 0400)) < 0) {
+ (void) fprintf(stderr, "ERROR!!! can't read-only open %s\n",
+ Path);
+ goto print_file_error;
+ }
+ /*
+ * Record that an existing file is being used. Clear its ASCII size.
+ */
+ NFstat = 1;
+ szbuf[0] = '\0';
+ } else {
+
+ /*
+ * The file path wasn't supplied with -p, so generate one.
+ */
+ (void) snprintf(buf, sizeof(buf) - 1, "./config.LTnfs%ld",
+ (long)MyPid);
+ buf[sizeof(buf) - 1] = '\0';
+ Path = MkStrCpy(buf, &ti);
+ /*
+ * 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 create %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);
+ }
+ NFstat = 2;
+ /*
+ * Write the test file to its expected size.
+ */
+ sz = sizeof(buf);
+ for (ti = 0; ti < sz; ti++) {
+ buf[ti] = (char)(ti & 0xff);
+ }
+ if (write(Fd, buf, sz) != sz) {
+ (void) fprintf(stderr, "ERROR!!! can't write %d bytes to %s\n",
+ sz, 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;
+ }
+ /*
+ * Convert the file size to ASCII.
+ */
+ (void) snprintf(szbuf, sizeof(szbuf) - 1, "%d", sz);
+ szbuf[sizeof(szbuf) - 1] = '\0';
+ }
+/*
+ * Make sure the test file can be found on an NFS file system.
+ */
+ if ((em = FindNFSfile(&ff, szbuf))) {
+
+ /*
+ * Print the error message returned by FindNFSfile().
+ */
+ (void) PrtMsg(em, Pn);
+ if (!ff) {
+
+ /*
+ * If the file couldn't be found, print hints.
+ */
+ if (NFstat == 1) {
+ (void) PrtMsg(
+ "Hint: this test must be able to open for read access",
+ Pn);
+ (void) PrtMsg(
+ "the file at the path supplied with the -p option and",
+ Pn);
+ (void) PrtMsg(
+ "that file must be a regular file (not a directory) on",
+ Pn);
+ (void) PrtMsg(
+ "an NFS file system.\n",
+ Pn);
+ (void) PrtMsgX(
+ "See 00FAQ and 00TEST for more information.",
+ Pn, cleanup, 1);
+ } else if (NFstat == 2) {
+ (void) PrtMsg(
+ "Hint: the temporary path generated by this test might",
+ Pn);
+ (void) PrtMsg(
+ "not be on an NFS file system, or this test might be",
+ Pn);
+ (void) PrtMsg(
+ "unable to create a file on the NFS file system.\n",
+ Pn);
+ (void) PrtMsg(
+ "As a work-around use the -p option to specify a path to",
+ Pn);
+ (void) PrtMsg(
+ "a regular file (not a directory) on an NFS file system",
+ Pn);
+ (void) PrtMsg(
+ "to which this test will have read access.\n",
+ Pn);
+ (void) PrtMsgX(
+ "See 00FAQ and 00TEST for more information.",
+ Pn, cleanup, 1);
+ }
+ }
+ }
+/*
+ * Exit successfully.
+ */
+ (void) PrtMsgX("OK", Pn, cleanup, 0);
+ return(0);
+}
+
+
+/*
+ * cleanup() -- release resources
+ */
+
+static void
+cleanup()
+{
+ if (Fd >= 0) {
+ (void) close(Fd);
+ Fd = -1;
+ if (Path) {
+ if (NFstat == 2)
+ (void) unlink(Path);
+ Path = (char *)NULL;
+ }
+ }
+}
+
+
+/*
+ * FindNFSfile() -- find the NFS file with lsof
+ */
+
+static char *
+FindNFSfile(ff, szbuf)
+ int *ff; /* file-found response receptor */
+ char *szbuf; /* expected file size in ASCII (if
+ * the file was created by this test */
+{
+ char buf[2048]; /* temporary buffer */
+ char *cem; /* current error message pointer */
+ LTfldo_t *cmdp; /* command pointer */
+ LTfldo_t *devp; /* device pointer */
+ LTfldo_t *fop; /* field output pointer */
+ char ibuf[64]; /* inode number buffer */
+ LTfldo_t *inop; /* inode number pointer */
+ LTdev_t lsofdc; /* lsof device components */
+ int nf; /* number of fields */
+ char nlkbuf[32]; /* link count buffer */
+ LTfldo_t *nlkp; /* nlink pointer */
+ char *opv[5]; /* 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 */
+ LTfldo_t *szp; /* size pointer */
+ char *tcp; /* temporary character pointer */
+ int ti; /* temporary integer */
+ LTfldo_t *typ; /* file type pointer */
+/*
+ * Check the argument pointers.
+ *
+ * Set the file-found response false.
+ */
+ if (!ff || !szbuf)
+ (void) PrtMsgX("ERROR!!! missing argument to FindNFSfile()",
+ Pn, cleanup, 1);
+ *ff = 0;
+/*
+ * 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';
+ PrtMsgX(buf, Pn, cleanup, 1);
+ }
+/*
+ * Extract components from test file's stat buffer.
+ */
+ if ((cem = ConvStatDev(&sb.st_dev, &stdc)))
+ PrtMsgX(cem, Pn, cleanup, 1);
+ (void) snprintf(ibuf, sizeof(ibuf) - 1, "%u", (unsigned int)sb.st_ino);
+ ibuf[sizeof(ibuf) - 1] = '\0';
+ (void) snprintf(nlkbuf, sizeof(nlkbuf) - 1, "%d", (int)sb.st_nlink);
+ nlkbuf[sizeof(nlkbuf) - 1] = '\0';
+/*
+ * Complete the option vector and start lsof execution.
+ */
+ ti = 0;
+ opv[ti++] = "-s";
+ opv[ti++] = "-Na";
+
+#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.
+ */
+ 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;
+ /*
+ * Scan for device, inode, nlink, offset, size and type fields.
+ */
+ devp = inop = nlkp, szp = typ = (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_NLINK:
+ nlkp = fop;
+ break;
+ case LSOF_FID_OFFSET:
+ break;
+ case LSOF_FID_SIZE:
+ szp = fop;
+ break;
+ case LSOF_FID_TYPE:
+ typ = fop;
+ break;
+ }
+ }
+ /*
+ * Check the device, inode, and type of the file.
+ */
+ if (!devp || !inop || !typ)
+ break;
+ if (strcasecmp(typ->v, "reg") && strcasecmp(typ->v, "vreg"))
+ break;
+ if ((cem = ConvLsofDev(devp->v, &lsofdc))) {
+ if (pem)
+ (void) PrtMsg(pem, Pn);
+ pem = cem;
+ break;
+ }
+ if ((stdc.maj != lsofdc.maj)
+ || (stdc.min != lsofdc.min)
+ || (stdc.unit != lsofdc.unit)
+ || strcmp(inop->v, ibuf)
+ ) {
+ break;
+ }
+ /*
+ * Indicate the file was found.
+ */
+ *ff = 1;
+ /*
+ * Check the link count.
+ */
+ if (!nlkp) {
+ (void) snprintf(buf, sizeof(buf) - 1,
+ "ERROR!!! lsof didn't report a link count for %s", Path);
+ buf[sizeof(buf) - 1] = '\0';
+ cem = MkStrCpy(buf, &ti);
+ if (pem)
+ (void) PrtMsg(pem, Pn);
+ pem = cem;
+ break;
+ }
+ if (strcmp(nlkp->v, nlkbuf)) {
+ (void) snprintf(buf, sizeof(buf) - 1,
+ "ERROR!!! wrong link count: expected %s, got %s",
+ nlkbuf, nlkp->v);
+ buf[sizeof(buf) - 1] = '\0';
+ cem = MkStrCpy(buf, &ti);
+ if (pem)
+ (void) PrtMsg(pem, Pn);
+ pem = cem;
+ break;
+ }
+ /*
+ * If the file was created by this test, check its size.
+ */
+ if (NFstat == 2) {
+ if (!szp) {
+ (void) snprintf(buf, sizeof(buf) - 1,
+ "ERROR!!! lsof didn't report a size for %s", Path);
+ buf[sizeof(buf) - 1] = '\0';
+ cem = MkStrCpy(buf, &ti);
+ if (pem)
+ (void) PrtMsg(pem, Pn);
+ pem = cem;
+ break;
+ }
+ if (strcmp(szp->v, szbuf)) {
+ (void) snprintf(buf, sizeof(buf) - 1,
+ "ERROR!!! wrong file size: expected %s, got %s",
+ szbuf, szp->v);
+ buf[sizeof(buf) - 1] = '\0';
+ cem = MkStrCpy(buf, &ti);
+ if (pem)
+ (void) PrtMsg(pem, Pn);
+ pem = cem;
+ break;
+ }
+ }
+ /*
+ * The requested file was located. Return the previous error message
+ * pointer. (It will be NULL if no error was detected.)
+ */
+ (void) StopLsof();
+ return(pem);
+ }
+ }
+/*
+ * The test file wasn't found.
+ */
+ (void) StopLsof();
+ if (pem)
+ (void) PrtMsg(pem, Pn);
+ (void) snprintf(buf, sizeof(buf) - 1,
+ "ERROR!!! test file %s not found by lsof", Path);
+ buf[sizeof(buf) - 1] = '\0';
+ return(MkStrCpy(buf, &ti));
+}
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