| /* |
| * ddev.c - AIX device support functions for lsof |
| */ |
| |
| |
| /* |
| * Copyright 1994 Purdue Research Foundation, West Lafayette, Indiana |
| * 47907. All rights reserved. |
| * |
| * Written by Victor A. 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 1994 Purdue Research Foundation.\nAll rights reserved.\n"; |
| static char *rcsid = "$Id: ddev.c,v 1.14 2005/08/08 19:46:38 abe Exp $"; |
| #endif |
| |
| |
| #include "lsof.h" |
| |
| |
| /* |
| * Local definitions |
| */ |
| |
| #define LIKE_BLK_SPEC "like block special" |
| #define LIKE_CHR_SPEC "like character special" |
| |
| |
| /* |
| * Local function prototypes |
| */ |
| |
| _PROTOTYPE(static int rmdupdev,(struct l_dev ***dp, int n, char *nm)); |
| |
| |
| #if defined(HASDCACHE) && AIXV>=4140 |
| |
| |
| /* |
| * clr_sect() - clear cached clone and pseudo sections |
| */ |
| |
| void |
| clr_sect() |
| { |
| struct clone *c, *c1; |
| |
| if (Clone) { |
| for (c = Clone; c; c = c1) { |
| c1 = c->next; |
| if (c->cd.name) |
| (void) free((FREE_P *)c->cd.name); |
| (void) free((FREE_P *)c); |
| } |
| Clone = (struct clone *)NULL; |
| } |
| } |
| #endif /* defined(HASDCACHE) && AIXV>=4140 */ |
| |
| |
| /* |
| * getchan() - get channel from file path name |
| */ |
| |
| int |
| getchan(p) |
| char *p; /* file path name */ |
| { |
| int ch; |
| char *s; |
| |
| if (!(s = strrchr(p, '/'))) |
| return(-1); |
| if (*(++s) == '\0') |
| return(-1); |
| for (ch = 0; *s; s++) { |
| |
| #if defined(__STDC__) |
| if ( ! isdigit(*s)) |
| #else |
| if ( ! isascii(*s) || ! isdigit(*s)) |
| #endif /* __STDC__ */ |
| |
| return(-1); |
| ch = (ch * 10) + *s - '0'; |
| } |
| return(ch); |
| } |
| |
| |
| /* |
| * printdevname() - print device name |
| */ |
| |
| int |
| printdevname(dev, rdev, f, nty) |
| dev_t *dev; /* device */ |
| dev_t *rdev; /* raw device */ |
| int f; /* 1 = follow with '\n' */ |
| int nty; /* node type: N_BLK or N_CHR */ |
| { |
| struct l_dev *dp; |
| /* |
| * Search device table for a full match. |
| */ |
| if ((dp = lkupdev(dev, rdev, 1, 1))) { |
| if (Lf->ch < 0) |
| safestrprt(dp->name, stdout, f); |
| else { |
| safestrprt(dp->name, stdout, 0); |
| (void) printf("/%d%s", Lf->ch, f ? "\n" : ""); |
| } |
| return(1); |
| } |
| /* |
| * Search device table for a match without inode number and dev. |
| */ |
| if ((dp = lkupdev(&DevDev, rdev, 0, 1))) { |
| |
| /* |
| * A raw device match was found. Record it as a name column addition. |
| */ |
| char *cp, *ttl; |
| int len; |
| |
| ttl = (nty == N_BLK) ? LIKE_BLK_SPEC : LIKE_CHR_SPEC; |
| len = (int)(1 + strlen(ttl) + 1 + strlen(dp->name) + 1); |
| if (!(cp = (char *)malloc((MALLOC_S)(len + 1)))) { |
| (void) fprintf(stderr, "%s: no nma space for: (%s %s)\n", |
| Pn, ttl, dp->name); |
| Exit(1); |
| } |
| (void) snpf(cp, len + 1, "(%s %s)", ttl, dp->name); |
| (void) add_nma(cp, len); |
| (void) free((MALLOC_P *)cp); |
| return(0); |
| } |
| return(0); |
| } |
| |
| |
| /* |
| * readdev() - read device names, modes and types |
| */ |
| |
| void |
| readdev(skip) |
| int skip; /* skip device cache read if 1 */ |
| { |
| |
| #if defined(HASDCACHE) |
| int dcrd; |
| #endif /* defined(HASDCACHE) */ |
| |
| DIR *dfp; |
| struct dirent *dp; |
| char *fp = (char *)NULL; |
| int i = 0; |
| |
| #if defined(HASBLKDEV) |
| int j = 0; |
| #endif /* defined(HASBLKDEV) */ |
| |
| char *path = (char *)NULL; |
| MALLOC_S pl; |
| struct stat sb; |
| |
| #if AIXV>=4140 |
| struct clone *c; |
| dev_t cd; |
| #endif /* AIXV >=4140 */ |
| |
| if (Sdev) |
| return; |
| |
| #if defined(HASDCACHE) |
| /* |
| * Read device cache, as directed. |
| */ |
| if (!skip) { |
| if (DCstate == 2 || DCstate == 3) { |
| if ((dcrd = read_dcache()) == 0) |
| return; |
| } |
| } else |
| dcrd = 1; |
| #endif /* defined(HASDCACHE) */ |
| |
| #if AIXV>=4140 |
| /* |
| * Establish the clone major device for AIX 4.1.4 and above. |
| */ |
| if (stat("/dev/clone", &sb) == 0) { |
| cd = sb.st_rdev; |
| CloneMaj = GET_MAJ_DEV(cd); |
| } |
| #endif /* AIXV >=4140 */ |
| |
| Dstk = (char **)NULL; |
| Dstkn = Dstkx = 0; |
| (void) stkdir("/dev"); |
| /* |
| * Unstack the next /dev or /dev/<subdirectory> directory. |
| */ |
| while (--Dstkx >= 0) { |
| if (!(dfp = opendir(Dstk[Dstkx]))) { |
| |
| #if defined(WARNDEVACCESS) |
| if (!Fwarn) { |
| (void) fprintf(stderr, "%s: WARNING: can't open: ", Pn); |
| safestrprt(Dstk[Dstkx], stderr, 1); |
| } |
| #endif /* defined(WARNDEVACCESS) */ |
| |
| (void) free((FREE_P *)Dstk[Dstkx]); |
| Dstk[Dstkx] = (char *)NULL; |
| continue; |
| } |
| if (path) { |
| (void) free((FREE_P *)path); |
| path = (char *)NULL; |
| } |
| if (!(path = mkstrcat(Dstk[Dstkx], -1, "/", 1, (char *)NULL, |
| -1, &pl))) |
| { |
| (void) fprintf(stderr, "%s: no space for: ", Pn); |
| safestrprt(Dstk[Dstkx], stderr, 1); |
| Exit(1); |
| } |
| (void) free((FREE_P *)Dstk[Dstkx]); |
| Dstk[Dstkx] = (char *)NULL; |
| /* |
| * Scan the directory. |
| */ |
| for (dp = readdir(dfp); dp; dp = readdir(dfp)) { |
| if (!dp->d_ino || (dp->d_name[0] == '.')) |
| continue; |
| /* |
| * Form the full path name and get its status. |
| */ |
| if (fp) { |
| (void) free((FREE_P *)fp); |
| fp = (char *)NULL; |
| } |
| if (!(fp = mkstrcat(path, (int)pl, dp->d_name, dp->d_namlen, |
| (char *)NULL, -1, (MALLOC_S *)NULL))) { |
| (void) fprintf(stderr, "%s: no space for: ", Pn); |
| safestrprt(path, stderr, 0); |
| safestrprt(dp->d_name, stderr, 1); |
| Exit(1); |
| } |
| |
| #if defined(USE_STAT) |
| if (stat(fp, &sb) != 0) |
| #else /* !defined(USE_STAT) */ |
| if (lstat(fp, &sb) != 0) |
| #endif /* defined(USE_STAT) */ |
| |
| { |
| if (errno == ENOENT) /* symbolic link to nowhere? */ |
| continue; |
| |
| #if defined(WARNDEVACCESS) |
| if (!Fwarn) { |
| int errno_save = errno; |
| |
| (void) fprintf(stderr, "%s: can't stat: ", Pn); |
| safestrprt(fp, stderr, 0); |
| (void) fprintf(stderr, ": %s\n", strerror(errno_save)); |
| } |
| #endif /* defined(WARNDEVACCESS) */ |
| |
| continue; |
| } |
| /* |
| * If it's a subdirectory, stack its name for later processing. |
| */ |
| if ((sb.st_mode & S_IFMT) == S_IFDIR) { |
| (void) stkdir(fp); |
| continue; |
| } |
| if ((sb.st_mode & S_IFMT) == S_IFCHR) { |
| |
| /* |
| * Save character device information. |
| */ |
| if (i >= Ndev) { |
| Ndev += DEVINCR; |
| if (!Devtp) |
| Devtp = (struct l_dev *)malloc( |
| (MALLOC_S)(sizeof(struct l_dev)*Ndev)); |
| else |
| Devtp = (struct l_dev *)realloc( (MALLOC_P *)Devtp, |
| (MALLOC_S)(sizeof(struct l_dev)*Ndev)); |
| if (!Devtp) { |
| (void) fprintf(stderr, |
| "%s: no space for character device\n", Pn); |
| Exit(1); |
| } |
| } |
| Devtp[i].rdev = sb.st_rdev; |
| Devtp[i].inode = (INODETYPE)sb.st_ino; |
| if (!(Devtp[i].name = mkstrcpy(fp, (MALLOC_S *)NULL))) { |
| (void) fprintf(stderr, "%s: no space for: ", Pn); |
| safestrprt(fp, stderr, 1); |
| Exit(1); |
| } |
| Devtp[i].v = 0; |
| i++; |
| |
| #if AIXV>=4140 |
| /* |
| * Save information on AIX 4.1.4 and above clone devices. |
| */ |
| if (CloneMaj >= 0 && CloneMaj == GET_MAJ_DEV(sb.st_rdev)) { |
| if (!(c = (struct clone *)malloc( |
| (MALLOC_S)sizeof(struct clone)))) |
| { |
| (void) fprintf(stderr, |
| "%s: no space for clone device: ", Pn); |
| safestrprt(fp, stderr, 1); |
| exit(1); |
| } |
| if (!(c->cd.name = mkstrcpy(fp, (MALLOC_S)NULL))) { |
| (void) fprintf(stderr, |
| "%s: no space for clone name: ", Pn); |
| safestrprt(fp, stderr, 1); |
| exit(1); |
| } |
| c->cd.inode = (INODETYPE)sb.st_ino; |
| c->cd.rdev = sb.st_rdev; |
| c->cd.v = 0; |
| c->next = Clone; |
| Clone = c; |
| if (ClonePtc < 0 && strcmp(path, "/dev/ptc") == 0) |
| ClonePtc = GET_MIN_DEV(sb.st_rdev); |
| } |
| #endif /* AIXV >=4140 */ |
| |
| } |
| |
| #if defined(HASBLKDEV) |
| if ((sb.st_mode & S_IFMT) == S_IFBLK) { |
| |
| /* |
| * Save block device information in BDevtp[]. |
| */ |
| if (j >= BNdev) { |
| BNdev += DEVINCR; |
| if (!BDevtp) |
| BDevtp = (struct l_dev *)malloc( |
| (MALLOC_S)(sizeof(struct l_dev)*BNdev)); |
| else |
| BDevtp = (struct l_dev *)realloc( |
| (MALLOC_P *)BDevtp, |
| (MALLOC_S)(sizeof(struct l_dev)*BNdev)); |
| if (!BDevtp) { |
| (void) fprintf(stderr, |
| "%s: no space for block device\n", Pn); |
| Exit(1); |
| } |
| } |
| BDevtp[j].rdev = sb.st_rdev; |
| BDevtp[j].inode = (INODETYPE)sb.st_ino; |
| BDevtp[j].name = fp; |
| fp = (char *)NULL; |
| BDevtp[j].v = 0; |
| j++; |
| } |
| #endif /* defined(HASBLKDEV) */ |
| |
| } |
| (void) closedir(dfp); |
| } |
| /* |
| * Free any allocated space. |
| */ |
| if (Dstk) { |
| (void) free((FREE_P *)Dstk); |
| Dstk = (char **)NULL; |
| Dstkn = Dstkx = 0; |
| } |
| if (fp) |
| (void) free((FREE_P *)fp); |
| if (path) |
| (void) free((FREE_P *)path); |
| /* |
| * Reduce the BDevtp[] (optional) and Devtp[] tables to their minimum |
| * sizes; allocate and build sort pointer lists; and sort the tables by |
| * device number. |
| */ |
| |
| #if defined(HASBLKDEV) |
| if (BNdev) { |
| if (BNdev > j) { |
| BNdev = j; |
| BDevtp = (struct l_dev *)realloc((MALLOC_P *)BDevtp, |
| (MALLOC_S)(sizeof(struct l_dev) * BNdev)); |
| } |
| if (!(BSdev = (struct l_dev **)malloc( |
| (MALLOC_S)(sizeof(struct l_dev *) * BNdev)))) |
| { |
| (void) fprintf(stderr, |
| "%s: no space for block device sort pointers\n", Pn); |
| Exit(1); |
| } |
| for (j = 0; j < BNdev; j++) { |
| BSdev[j] = &BDevtp[j]; |
| } |
| (void) qsort((QSORT_P *)BSdev, (size_t)BNdev, |
| (size_t)sizeof(struct l_dev *), compdev); |
| BNdev = rmdupdev(&BSdev, BNdev, "block"); |
| } else { |
| if (!Fwarn) |
| (void) fprintf(stderr, |
| "%s: WARNING: no block devices found\n", Pn); |
| } |
| #endif /* defined(HASBLKDEV) */ |
| |
| if (Ndev) { |
| if (Ndev > i) { |
| Ndev = i; |
| Devtp = (struct l_dev *)realloc((MALLOC_P *)Devtp, |
| (MALLOC_S)(sizeof(struct l_dev) * Ndev)); |
| } |
| if (!(Sdev = (struct l_dev **)malloc( |
| (MALLOC_S)(sizeof(struct l_dev *) * Ndev)))) |
| { |
| (void) fprintf(stderr, |
| "%s: no space for character device sort pointers\n", Pn); |
| Exit(1); |
| } |
| for (i = 0; i < Ndev; i++) { |
| Sdev[i] = &Devtp[i]; |
| } |
| (void) qsort((QSORT_P *)Sdev, (size_t)Ndev, |
| (size_t)sizeof(struct l_dev *), compdev); |
| Ndev = rmdupdev(&Sdev, Ndev, "char"); |
| } else { |
| (void) fprintf(stderr, "%s: no character devices found\n", Pn); |
| Exit(1); |
| } |
| |
| #if defined(HASDCACHE) |
| /* |
| * Write device cache file, as required. |
| */ |
| if (DCstate == 1 || (DCstate == 3 && dcrd)) |
| write_dcache(); |
| #endif /* defined(HASDCACHE) */ |
| |
| } |
| |
| |
| #if defined(HASDCACHE) |
| /* |
| * rereaddev() - reread device names, modes and types |
| */ |
| |
| void |
| rereaddev() |
| { |
| (void) clr_devtab(); |
| |
| # if defined(DCACHE_CLR) |
| (void) DCACHE_CLR(); |
| # endif /* defined(DCACHE_CLR) */ |
| |
| readdev(1); |
| DCunsafe = 0; |
| } |
| #endif /* defined(HASDCACHE) */ |
| |
| |
| /* |
| * rmdupdev() - remove duplicate (major/minor/inode) devices |
| */ |
| |
| static int |
| rmdupdev(dp, n, nm) |
| struct l_dev ***dp; /* device table pointers address */ |
| int n; /* number of pointers */ |
| char *nm; /* device table name for error message */ |
| { |
| |
| #if AIXV>=4140 |
| struct clone *c, *cp; |
| #endif /* AIXV>=4140 */ |
| |
| int i, j, k; |
| struct l_dev **p; |
| |
| for (i = j = 0, p = *dp; i < n ;) { |
| for (k = i + 1; k < n; k++) { |
| if (p[i]->rdev != p[k]->rdev || p[i]->inode != p[k]->inode) |
| break; |
| |
| #if AIXV>=4140 |
| /* |
| * See if we're deleting a duplicate clone device. If so, |
| * delete its clone table entry. |
| */ |
| for (c = Clone, cp = (struct clone *)NULL; |
| c; |
| cp = c, c = c->next) |
| { |
| if (c->cd.rdev != p[k]->rdev |
| || c->cd.inode != p[k]->inode |
| || strcmp(c->cd.name, p[k]->name)) |
| continue; |
| if (!cp) |
| Clone = c->next; |
| else |
| cp->next = c->next; |
| if (c->cd.name) |
| (void) free((FREE_P *)c->cd.name); |
| (void) free((FREE_P *)c); |
| break; |
| } |
| #endif /* AIXV>=4140 */ |
| |
| } |
| if (i != j) |
| p[j] = p[i]; |
| j++; |
| i = k; |
| } |
| if (n == j) |
| return(n); |
| if (!(*dp = (struct l_dev **)realloc((MALLOC_P *)*dp, |
| (MALLOC_S)(j * sizeof(struct l_dev *))))) |
| { |
| (void) fprintf(stderr, "%s: can't realloc %s device pointers\n", |
| Pn, nm); |
| Exit(1); |
| } |
| return(j); |
| } |
| |
| |
| #if defined(HASDCACHE) && AIXV>=4140 |
| /* |
| * rw_clone_sect() - read/write the device cache file clone section |
| */ |
| |
| int |
| rw_clone_sect(m) |
| int m; /* mode: 1 = read; 2 = write */ |
| { |
| char buf[MAXPATHLEN*2], *cp; |
| struct clone *c; |
| int i, len, n; |
| |
| if (m == 1) { |
| |
| /* |
| * Read the clone section header and validate it. |
| */ |
| if (!fgets(buf, sizeof(buf), DCfs)) { |
| |
| bad_clone_sect: |
| |
| if (!Fwarn) { |
| (void) fprintf(stderr, |
| "%s: bad clone section header in %s: ", |
| Pn, DCpath[DCpathX]); |
| safestrprt(buf, stderr, 1); |
| } |
| return(1); |
| } |
| (void) crc(buf, strlen(buf), &DCcksum); |
| len = strlen("clone section: "); |
| if (strncmp(buf, "clone section: ", len) != 0) |
| goto bad_clone_sect; |
| if ((n = atoi(&buf[len])) < 0) |
| goto bad_clone_sect; |
| /* |
| * Read the clone section lines and create the Clone list. |
| */ |
| for (i = 0; i < n; i++) { |
| if (!fgets(buf, sizeof(buf), DCfs)) { |
| if (!Fwarn) { |
| (void) fprintf(stderr, |
| "%s: bad clone line in %s: ", Pn, DCpath[DCpathX]); |
| safestrprt(buf, stderr, 1); |
| } |
| return(1); |
| } |
| (void) crc(buf, strlen(buf), &DCcksum); |
| /* |
| * Allocate a clone structure. |
| */ |
| if (!(c = (struct clone *)calloc(1, sizeof(struct clone)))) { |
| (void) fprintf(stderr, |
| "%s: no space for cached clone: ", Pn); |
| safestrprt(buf, stderr, 1); |
| Exit(1); |
| } |
| /* |
| * Enter the clone device number. |
| */ |
| if (!(cp = x2dev(buf, &c->cd.rdev)) || *cp++ != ' ') { |
| |
| bad_cached_clone: |
| if (!Fwarn) { |
| (void) fprintf(stderr, |
| "%s: bad cached clone device: ", Pn); |
| safestrprt(buf, stderr, 1); |
| } |
| return(1); |
| } |
| CloneMaj = GET_MAJ_DEV(c->cd.rdev); |
| /* |
| * Enter the clone inode number. |
| */ |
| for (c->cd.inode = (INODETYPE)0; *cp != ' '; cp++) { |
| if (*cp < '0' || *cp > '9') |
| goto bad_cached_clone; |
| c->cd.inode = (INODETYPE)((c->cd.inode * 10) + (*cp - '0')); |
| } |
| /* |
| * Enter the clone path name. |
| */ |
| if ((len = strlen(++cp)) < 2 || *(cp + len - 1) != '\n') { |
| if (!Fwarn) { |
| (void) fprintf(stderr, |
| "%s: bad cached clone path: ", Pn); |
| safestrprt(buf, stderr, 1); |
| } |
| return(1); |
| } |
| *(cp + len - 1) = '\0'; |
| if (!(c->cd.name = mkstrcpy(cp, (MALLOC_S *)NULL))) { |
| (void) fprintf(stderr, |
| "%s: no space for cached clone path: ", Pn); |
| safestrprt(buf, stderr, 1); |
| Exit(1); |
| } |
| c->cd.v = 0; |
| c->next = Clone; |
| Clone = c; |
| if (ClonePtc < 0 && strcmp(c->cd.name, "/dev/ptc") == 0) |
| ClonePtc = GET_MIN_DEV(c->cd.rdev); |
| } |
| return(0); |
| } else if (m == 2) { |
| |
| /* |
| * Write the clone section header. |
| */ |
| for (c = Clone, n = 0; c; c = c->next, n++) |
| ; |
| (void) snpf(buf, sizeof(buf), "clone section: %d\n", n); |
| if (wr2DCfd(buf, &DCcksum)) |
| return(1); |
| /* |
| * Write the clone section lines. |
| */ |
| for (c = Clone; c; c = c->next) { |
| (void) snpf(buf, sizeof(buf), "%x %ld %s\n", |
| c->cd.rdev, (long)c->cd.inode, c->cd.name); |
| if (wr2DCfd(buf, &DCcksum)) |
| return(1); |
| } |
| return(0); |
| } |
| /* |
| * A shouldn't-happen case: mode neither 1 nor 2. |
| */ |
| (void) fprintf(stderr, "%s: internal rw_clone_sect error: %d\n", |
| Pn, m); |
| Exit(1); |
| } |
| #endif /* defined(HASDCACHE) && AIXV>=4140 */ |
| |
| |
| #if defined(HASDCACHE) |
| /* |
| * vfy_dev() - verify a device table entry (usually when DCunsafe == 1) |
| * |
| * Note: rereads entire device table when an entry can't be verified. |
| */ |
| |
| int |
| vfy_dev(dp) |
| struct l_dev *dp; /* device table pointer */ |
| { |
| struct stat sb; |
| |
| if (!DCunsafe || dp->v) |
| return(1); |
| |
| #if defined(USE_STAT) |
| if (stat(dp->name, &sb) != 0 |
| #else /* !defined(USE_STAT) */ |
| if (lstat(dp->name, &sb) != 0 |
| #endif /* defined(USE_STAT) */ |
| |
| || dp->rdev != sb.st_rdev |
| || dp->inode != (INODETYPE)sb.st_ino) { |
| (void) rereaddev(); |
| return(0); |
| } |
| dp->v = 1; |
| return(1); |
| } |
| #endif /* defined(HASDCACHE) */ |