/* $NetBSD: pkill.c,v 1.16 2005/10/10 22:13:20 kleink Exp $ */ /*- * Copyright (c) 2002 The NetBSD Foundation, Inc. * Copyright (c) 2005 Pawel Jakub Dawidek * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Andrew Doran. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD: src/bin/pkill/pkill.c,v 1.12 2011/02/04 16:40:50 jilles Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef __APPLE__ #include #endif #include #include #include #include #include #ifdef __APPLE__ #include #include #include #include #endif #define STATUS_MATCH 0 #define STATUS_NOMATCH 1 #define STATUS_BADUSAGE 2 #define STATUS_ERROR 3 #define MIN_PID 5 #define MAX_PID 99999 #ifdef __APPLE__ /* Ignore system processes and myself. */ #define PSKIP(kp) ((pid_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_PID)) == mypid || \ ((xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_FLAGS)) & PROC_FLAG_SYSTEM) != 0)) #else /* Ignore system-processes (if '-S' flag is not specified) and myself. */ #define PSKIP(kp) ((kp)->ki_pid == mypid || \ (!kthreads && ((kp)->ki_flag & P_KTHREAD) != 0)) #endif enum listtype { LT_GENERIC, LT_USER, LT_GROUP, LT_TTY, LT_PGRP, #ifndef __APPLE__ LT_JID, #endif LT_SID }; struct list { SLIST_ENTRY(list) li_chain; long li_number; }; SLIST_HEAD(listhead, list); #ifdef __APPLE__ static sysmon_table_t plist; #else static struct kinfo_proc *plist; #endif static char *selected; static const char *delim = "\n"; static int nproc; static int pgrep; static int signum = SIGTERM; static int newest; static int oldest; static int interactive; static int inverse; static int longfmt; static int matchargs; static int fullmatch; #ifndef __APPLE__ static int kthreads; #endif static int cflags = REG_EXTENDED; static int quiet; #ifndef __APPLE__ static kvm_t *kd; #endif static pid_t mypid; static struct listhead euidlist = SLIST_HEAD_INITIALIZER(euidlist); static struct listhead ruidlist = SLIST_HEAD_INITIALIZER(ruidlist); static struct listhead rgidlist = SLIST_HEAD_INITIALIZER(rgidlist); static struct listhead pgrplist = SLIST_HEAD_INITIALIZER(pgrplist); static struct listhead ppidlist = SLIST_HEAD_INITIALIZER(ppidlist); static struct listhead tdevlist = SLIST_HEAD_INITIALIZER(tdevlist); #ifndef __APPLE__ static struct listhead sidlist = SLIST_HEAD_INITIALIZER(sidlist); static struct listhead jidlist = SLIST_HEAD_INITIALIZER(jidlist); #endif static void usage(void) __attribute__((__noreturn__)); #ifdef __APPLE__ static int killact(const sysmon_row_t); static int grepact(const sysmon_row_t); #else static int killact(const struct kinfo_proc *); static int grepact(const struct kinfo_proc *); #endif static void makelist(struct listhead *, enum listtype, char *); static int takepid(const char *, int); #ifdef __APPLE__ static sysmon_table_t copy_process_info(void) { dispatch_semaphore_t sema; sysmon_request_t request; __block sysmon_table_t result = NULL; sema = dispatch_semaphore_create(0); request = sysmon_request_create_with_error(SYSMON_REQUEST_TYPE_PROCESS, ^(sysmon_table_t table, const char *error_str) { if (table) { result = sysmon_retain(table); } else { fprintf(stderr, "sysmon request failed with error: %s\n", error_str); } dispatch_semaphore_signal(sema); }); sysmon_request_add_attribute(request, SYSMON_ATTR_PROC_PID); sysmon_request_add_attribute(request, SYSMON_ATTR_PROC_FLAGS); sysmon_request_add_attribute(request, SYSMON_ATTR_PROC_UID); sysmon_request_add_attribute(request, SYSMON_ATTR_PROC_COMM); sysmon_request_add_attribute(request, SYSMON_ATTR_PROC_ARGUMENTS); sysmon_request_add_attribute(request, SYSMON_ATTR_PROC_RUID); sysmon_request_add_attribute(request, SYSMON_ATTR_PROC_RGID); sysmon_request_add_attribute(request, SYSMON_ATTR_PROC_PPID); sysmon_request_add_attribute(request, SYSMON_ATTR_PROC_PGID); sysmon_request_add_attribute(request, SYSMON_ATTR_PROC_TDEV); sysmon_request_add_attribute(request, SYSMON_ATTR_PROC_START); sysmon_request_execute(request); dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER); dispatch_release(sema); sysmon_release(request); return result; } #endif /* __APPLE__ */ int main(int argc, char **argv) { #ifdef __APPLE__ char buf[_POSIX2_LINE_MAX], *bufp, *mstr, *p, *q, *pidfile; xpc_object_t pargv; #else char buf[_POSIX2_LINE_MAX], *mstr, **pargv, *p, *q, *pidfile; const char *execf, *coref; #endif int ancestors, debug_opt, did_action; int i, ch, bestidx, rv, criteria, pidfromfile, pidfilelock; #ifdef __APPLE__ __block size_t jsz; int (*action)(const sysmon_row_t); sysmon_row_t kp; #else size_t jsz; int (*action)(const struct kinfo_proc *); struct kinfo_proc *kp; #endif struct list *li; #ifdef __APPLE__ int64_t best_tval; #else struct timeval best_tval; #endif regex_t reg; regmatch_t regmatch; pid_t pid; setlocale(LC_ALL, ""); if (strcmp(getprogname(), "pgrep") == 0) { action = grepact; pgrep = 1; } else { action = killact; p = argv[1]; if (argc > 1 && p[0] == '-') { p++; i = (int)strtol(p, &q, 10); if (*q == '\0') { signum = i; argv++; argc--; } else { if (strncasecmp(p, "SIG", 3) == 0) p += 3; for (i = 1; i < NSIG; i++) if (strcasecmp(sys_signame[i], p) == 0) break; if (i != NSIG) { signum = i; argv++; argc--; } } } } ancestors = 0; criteria = 0; debug_opt = 0; pidfile = NULL; pidfilelock = 0; quiet = 0; #ifndef __APPLE__ execf = NULL; coref = _PATH_DEVNULL; #endif #ifdef __APPLE__ while ((ch = getopt(argc, argv, "DF:G:ILP:U:ad:fg:ilnoqt:u:vx")) != -1) #else while ((ch = getopt(argc, argv, "DF:G:ILM:N:P:SU:ad:fg:ij:lnoqs:t:u:vx")) != -1) #endif switch (ch) { case 'D': debug_opt++; break; case 'F': pidfile = optarg; criteria = 1; break; case 'G': makelist(&rgidlist, LT_GROUP, optarg); criteria = 1; break; case 'I': if (pgrep) usage(); interactive = 1; break; case 'L': pidfilelock = 1; break; #ifndef __APPLE__ case 'M': coref = optarg; break; case 'N': execf = optarg; break; #endif case 'P': makelist(&ppidlist, LT_GENERIC, optarg); criteria = 1; break; #ifndef __APPLE__ case 'S': if (!pgrep) usage(); kthreads = 1; break; #endif case 'U': makelist(&ruidlist, LT_USER, optarg); criteria = 1; break; case 'a': ancestors++; break; case 'd': if (!pgrep) usage(); delim = optarg; break; case 'f': matchargs = 1; break; case 'g': makelist(&pgrplist, LT_PGRP, optarg); criteria = 1; break; case 'i': cflags |= REG_ICASE; break; #ifndef __APPLE__ case 'j': makelist(&jidlist, LT_JID, optarg); criteria = 1; break; #endif case 'l': longfmt = 1; break; case 'n': newest = 1; criteria = 1; break; case 'o': oldest = 1; criteria = 1; break; case 'q': if (!pgrep) usage(); quiet = 1; break; #ifndef __APPLE__ case 's': makelist(&sidlist, LT_SID, optarg); criteria = 1; break; #endif /* !__APPLE__ */ case 't': makelist(&tdevlist, LT_TTY, optarg); criteria = 1; break; case 'u': makelist(&euidlist, LT_USER, optarg); criteria = 1; break; case 'v': inverse = 1; break; case 'x': fullmatch = 1; break; default: usage(); /* NOTREACHED */ } argc -= optind; argv += optind; if (argc != 0) criteria = 1; if (!criteria) usage(); if (newest && oldest) errx(STATUS_ERROR, "Options -n and -o are mutually exclusive"); if (pidfile != NULL) pidfromfile = takepid(pidfile, pidfilelock); else { if (pidfilelock) { errx(STATUS_ERROR, "Option -L doesn't make sense without -F"); } pidfromfile = -1; } mypid = getpid(); #ifdef __APPLE__ plist = copy_process_info(); if (plist == NULL) { errx(STATUS_ERROR, "Cannot get process list"); } nproc = sysmon_table_get_count(plist); #else /* * Retrieve the list of running processes from the kernel. */ kd = kvm_openfiles(execf, coref, NULL, O_RDONLY, buf); if (kd == NULL) errx(STATUS_ERROR, "Cannot open kernel files (%s)", buf); /* * Use KERN_PROC_PROC instead of KERN_PROC_ALL, since we * just want processes and not individual kernel threads. */ plist = kvm_getprocs(kd, KERN_PROC_PROC, 0, &nproc); if (plist == NULL) { errx(STATUS_ERROR, "Cannot get process list (%s)", kvm_geterr(kd)); } #endif /* * Allocate memory which will be used to keep track of the * selection. */ if ((selected = malloc(nproc)) == NULL) { err(STATUS_ERROR, "Cannot allocate memory for %d processes", nproc); } memset(selected, 0, nproc); /* * Refine the selection. */ for (; *argv != NULL; argv++) { if ((rv = regcomp(®, *argv, cflags)) != 0) { regerror(rv, ®, buf, sizeof(buf)); errx(STATUS_BADUSAGE, "Cannot compile regular expression `%s' (%s)", *argv, buf); } #ifdef __APPLE__ for (i = 0; i < nproc; i++) { kp = sysmon_table_get_row(plist, i); #else for (i = 0, kp = plist; i < nproc; i++, kp++) { #endif if (PSKIP(kp)) { if (debug_opt > 0) fprintf(stderr, "* Skipped %5d %3d %s\n", #ifdef __APPLE__ (pid_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_PID)), (uid_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_UID)), xpc_string_get_string_ptr(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_COMM))); #else kp->ki_pid, kp->ki_uid, kp->ki_comm); #endif continue; } #ifdef __APPLE__ if (matchargs && (pargv = sysmon_row_get_value(kp, SYSMON_ATTR_PROC_ARGUMENTS)) != NULL) { jsz = 0; os_assert(sizeof(buf) == _POSIX2_LINE_MAX); bufp = buf; xpc_array_apply(pargv, ^(size_t index, xpc_object_t value) { if (jsz >= _POSIX2_LINE_MAX) { return (bool)false; } jsz += snprintf(bufp + jsz, _POSIX2_LINE_MAX - jsz, index < xpc_array_get_count(pargv) - 1 ? "%s " : "%s", xpc_string_get_string_ptr(value)); return (bool)true; }); #else if (matchargs && (pargv = kvm_getargv(kd, kp, 0)) != NULL) { jsz = 0; while (jsz < sizeof(buf) && *pargv != NULL) { jsz += snprintf(buf + jsz, sizeof(buf) - jsz, pargv[1] != NULL ? "%s " : "%s", pargv[0]); pargv++; } #endif mstr = buf; } else #ifdef __APPLE__ { /* * comm is limited to 15 bytes (MAXCOMLEN - 1). * Try to use argv[0] (trimmed) if available. */ mstr = NULL; pargv = sysmon_row_get_value(kp, SYSMON_ATTR_PROC_ARGUMENTS); if (pargv != NULL && xpc_array_get_count(pargv) > 0) { const char *tmp = xpc_array_get_string(pargv, 0); if (tmp != NULL) { mstr = strrchr(tmp, '/'); if (mstr != NULL) { mstr++; } else { mstr = (char *)tmp; } } } /* Fall back to "comm" if we failed to get argv[0]. */ if (mstr == NULL || *mstr == '\0') { mstr = (char *)xpc_string_get_string_ptr(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_COMM)); } /* Couldn't find process name, it probably exited. */ if (mstr == NULL) { continue; } } #else mstr = kp->ki_comm; #endif rv = regexec(®, mstr, 1, ®match, 0); if (rv == 0) { if (fullmatch) { if (regmatch.rm_so == 0 && regmatch.rm_eo == (off_t)strlen(mstr)) selected[i] = 1; } else selected[i] = 1; } else if (rv != REG_NOMATCH) { regerror(rv, ®, buf, sizeof(buf)); errx(STATUS_ERROR, "Regular expression evaluation error (%s)", buf); } if (debug_opt > 1) { const char *rv_res = "NoMatch"; if (selected[i]) rv_res = "Matched"; fprintf(stderr, "* %s %5d %3d %s\n", rv_res, #ifdef __APPLE__ (pid_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_PID)), (uid_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_UID)), mstr); #else kp->ki_pid, kp->ki_uid, mstr); #endif } } regfree(®); } #ifdef __APPLE__ for (i = 0; i < nproc; i++) { kp = sysmon_table_get_row(plist, i); #else for (i = 0, kp = plist; i < nproc; i++, kp++) { #endif if (PSKIP(kp)) continue; #ifdef __APPLE__ if (pidfromfile >= 0 && (pid_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_PID)) != pidfromfile) { #else if (pidfromfile >= 0 && kp->ki_pid != pidfromfile) { #endif selected[i] = 0; continue; } SLIST_FOREACH(li, &ruidlist, li_chain) #ifdef __APPLE__ if ((uid_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_RUID)) == (uid_t)li->li_number) #else if (kp->ki_ruid == (uid_t)li->li_number) #endif break; if (SLIST_FIRST(&ruidlist) != NULL && li == NULL) { selected[i] = 0; continue; } SLIST_FOREACH(li, &rgidlist, li_chain) #ifdef __APPLE__ if ((gid_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_RGID)) == (gid_t)li->li_number) #else if (kp->ki_rgid == (gid_t)li->li_number) #endif break; if (SLIST_FIRST(&rgidlist) != NULL && li == NULL) { selected[i] = 0; continue; } SLIST_FOREACH(li, &euidlist, li_chain) #ifdef __APPLE__ if ((uid_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_UID)) == (uid_t)li->li_number) #else if (kp->ki_uid == (uid_t)li->li_number) #endif break; if (SLIST_FIRST(&euidlist) != NULL && li == NULL) { selected[i] = 0; continue; } SLIST_FOREACH(li, &ppidlist, li_chain) #ifdef __APPLE__ if ((pid_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_PPID)) == (pid_t)li->li_number) #else if (kp->ki_ppid == (pid_t)li->li_number) #endif break; if (SLIST_FIRST(&ppidlist) != NULL && li == NULL) { selected[i] = 0; continue; } SLIST_FOREACH(li, &pgrplist, li_chain) #ifdef __APPLE__ if ((pid_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_PGID)) == (pid_t)li->li_number) #else if (kp->ki_pgid == (pid_t)li->li_number) #endif break; if (SLIST_FIRST(&pgrplist) != NULL && li == NULL) { selected[i] = 0; continue; } SLIST_FOREACH(li, &tdevlist, li_chain) { if (li->li_number == -1 && #ifdef __APPLE__ (xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_FLAGS)) & PROC_FLAG_CONTROLT) == 0) #else (kp->ki_flag & P_CONTROLT) == 0) #endif break; #ifdef __APPLE__ if ((dev_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_TDEV)) == (dev_t)li->li_number) #else if (kp->ki_tdev == (dev_t)li->li_number) #endif break; } if (SLIST_FIRST(&tdevlist) != NULL && li == NULL) { selected[i] = 0; continue; } #ifndef __APPLE__ SLIST_FOREACH(li, &sidlist, li_chain) if (kp->ki_sid == (pid_t)li->li_number) break; if (SLIST_FIRST(&sidlist) != NULL && li == NULL) { selected[i] = 0; continue; } SLIST_FOREACH(li, &jidlist, li_chain) { /* A particular jail ID, including 0 (not in jail) */ if (kp->ki_jid == (int)li->li_number) break; /* Any jail */ if (kp->ki_jid > 0 && li->li_number == -1) break; } if (SLIST_FIRST(&jidlist) != NULL && li == NULL) { selected[i] = 0; continue; } #endif /* !__APPLE__ */ if (argc == 0) selected[i] = 1; } if (!ancestors) { pid = mypid; while (pid) { #ifdef __APPLE__ for (i = 0; i < nproc; i++) { kp = sysmon_table_get_row(plist, i); #else for (i = 0, kp = plist; i < nproc; i++, kp++) { #endif if (PSKIP(kp)) continue; #ifdef __APPLE__ if ((pid_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_PID)) == pid) { selected[i] = 0; pid = (pid_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_PPID)); break; } #else if (kp->ki_pid == pid) { selected[i] = 0; pid = kp->ki_ppid; break; } #endif } if (i == nproc) { if (pid == mypid) pid = getppid(); else break; /* Maybe we're in a jail ? */ } } } if (newest || oldest) { #ifdef __APPLE__ best_tval = 0; #else best_tval.tv_sec = 0; best_tval.tv_usec = 0; #endif bestidx = -1; #ifdef __APPLE__ for (i = 0; i < nproc; i++) { kp = sysmon_table_get_row(plist, i); #else for (i = 0, kp = plist; i < nproc; i++, kp++) { #endif if (!selected[i]) continue; if (bestidx == -1) { /* The first entry of the list which matched. */ ; #ifdef __APPLE__ } else if (xpc_date_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_START)) > best_tval) { #else } else if (timercmp(&kp->ki_start, &best_tval, >)) { #endif /* This entry is newer than previous "best". */ if (oldest) /* but we want the oldest */ continue; } else { /* This entry is older than previous "best". */ if (newest) /* but we want the newest */ continue; } /* This entry is better than previous "best" entry. */ #ifdef __APPLE__ best_tval = xpc_date_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_START)); #else best_tval.tv_sec = kp->ki_start.tv_sec; best_tval.tv_usec = kp->ki_start.tv_usec; #endif bestidx = i; } memset(selected, 0, nproc); if (bestidx != -1) selected[bestidx] = 1; } /* * Take the appropriate action for each matched process, if any. */ did_action = 0; #ifdef __APPLE__ for (i = 0, rv = 0; i < nproc; i++) { kp = sysmon_table_get_row(plist, i); #else for (i = 0, rv = 0, kp = plist; i < nproc; i++, kp++) { #endif if (PSKIP(kp)) continue; if (selected[i]) { if (longfmt && !pgrep) { did_action = 1; #ifdef __APPLE__ printf("kill -%d %d\n", signum, (int)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_PID))); #else printf("kill -%d %d\n", signum, kp->ki_pid); #endif } if (inverse) continue; } else if (!inverse) continue; rv |= (*action)(kp); } if (!did_action && !pgrep && longfmt) fprintf(stderr, "No matching processes belonging to you were found\n"); exit(rv ? STATUS_MATCH : STATUS_NOMATCH); } static void usage(void) { const char *ustr; if (pgrep) #ifdef __APPLE__ ustr = "[-Lfilnoqvx] [-d delim]"; #else ustr = "[-LSfilnoqvx] [-d delim]"; #endif else ustr = "[-signal] [-ILfilnovx]"; fprintf(stderr, #ifdef __APPLE__ "usage: %s %s [-F pidfile] [-G gid]\n" " [-P ppid] [-U uid] [-g pgrp]\n" #else "usage: %s %s [-F pidfile] [-G gid] [-M core] [-N system]\n" " [-P ppid] [-U uid] [-g pgrp] [-j jid] [-s sid]\n" #endif " [-t tty] [-u euid] pattern ...\n", getprogname(), ustr); exit(STATUS_BADUSAGE); } static void #ifdef __APPLE__ show_process(const sysmon_row_t kp) #else show_process(const struct kinfo_proc *kp) #endif { #ifdef __APPLE__ xpc_object_t argv; #else char **argv; #endif if (quiet) { assert(pgrep); return; } #ifdef __APPLE__ if ((longfmt || !pgrep) && matchargs && (argv = sysmon_row_get_value(kp, SYSMON_ATTR_PROC_ARGUMENTS)) != NULL) { printf("%d ", (int)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_PID))); (void)xpc_array_apply(argv, ^(size_t index, xpc_object_t value) { printf("%s", xpc_string_get_string_ptr(value)); if (index < xpc_array_get_count(argv) - 1) putchar(' '); return (bool)true; }); } else if (longfmt || !pgrep) printf("%d %s", (int)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_PID)), xpc_string_get_string_ptr(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_COMM))); else printf("%d", (int)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_PID))); #else if ((longfmt || !pgrep) && matchargs && (argv = kvm_getargv(kd, kp, 0)) != NULL) { printf("%d ", (int)kp->ki_pid); for (; *argv != NULL; argv++) { printf("%s", *argv); if (argv[1] != NULL) putchar(' '); } } else if (longfmt || !pgrep) printf("%d %s", (int)kp->ki_pid, kp->ki_comm); else printf("%d", (int)kp->ki_pid); #endif } static int #ifdef __APPLE__ killact(const sysmon_row_t kp) #else killact(const struct kinfo_proc *kp) #endif { int ch, first; if (interactive) { /* * Be careful, ask before killing. */ printf("kill "); show_process(kp); printf("? "); fflush(stdout); first = ch = getchar(); while (ch != '\n' && ch != EOF) ch = getchar(); if (first != 'y' && first != 'Y') return (1); } #ifdef __APPLE__ if (kill((pid_t)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_PID)), signum) == -1) { #else if (kill(kp->ki_pid, signum) == -1) { #endif /* * Check for ESRCH, which indicates that the process * disappeared between us matching it and us * signalling it; don't issue a warning about it. */ if (errno != ESRCH) #ifdef __APPLE__ warn("signalling pid %d", (int)xpc_uint64_get_value(sysmon_row_get_value(kp, SYSMON_ATTR_PROC_PID))); #else warn("signalling pid %d", (int)kp->ki_pid); #endif /* * Return 0 to indicate that the process should not be * considered a match, since we didn't actually get to * signal it. */ return (0); } return (1); } static int #ifdef __APPLE__ grepact(const sysmon_row_t kp) #else grepact(const struct kinfo_proc *kp) #endif { show_process(kp); if (!quiet) printf("%s", delim); return (1); } static void makelist(struct listhead *head, enum listtype type, char *src) { struct list *li; struct passwd *pw; struct group *gr; struct stat st; const char *cp; char *sp, *ep, buf[MAXPATHLEN]; int empty; empty = 1; while ((sp = strsep(&src, ",")) != NULL) { if (*sp == '\0') usage(); if ((li = malloc(sizeof(*li))) == NULL) { err(STATUS_ERROR, "Cannot allocate %zu bytes", sizeof(*li)); } SLIST_INSERT_HEAD(head, li, li_chain); empty = 0; li->li_number = (uid_t)strtol(sp, &ep, 0); if (*ep == '\0') { switch (type) { case LT_PGRP: if (li->li_number == 0) li->li_number = getpgrp(); break; #ifndef __APPLE__ case LT_SID: if (li->li_number == 0) li->li_number = getsid(mypid); break; case LT_JID: if (li->li_number < 0) errx(STATUS_BADUSAGE, "Negative jail ID `%s'", sp); /* For compatibility with old -j */ if (li->li_number == 0) li->li_number = -1; /* any jail */ break; #endif /* !__APPLE__ */ case LT_TTY: if (li->li_number < 0) errx(STATUS_BADUSAGE, "Negative /dev/pts tty `%s'", sp); snprintf(buf, sizeof(buf), _PATH_DEV "pts/%s", sp); if (stat(buf, &st) != -1) goto foundtty; if (errno == ENOENT) errx(STATUS_BADUSAGE, "No such tty: `" _PATH_DEV "pts/%s'", sp); err(STATUS_ERROR, "Cannot access `" _PATH_DEV "pts/%s'", sp); break; default: break; } continue; } switch (type) { case LT_USER: if ((pw = getpwnam(sp)) == NULL) errx(STATUS_BADUSAGE, "Unknown user `%s'", sp); li->li_number = pw->pw_uid; break; case LT_GROUP: if ((gr = getgrnam(sp)) == NULL) errx(STATUS_BADUSAGE, "Unknown group `%s'", sp); li->li_number = gr->gr_gid; break; case LT_TTY: if (strcmp(sp, "-") == 0) { li->li_number = -1; break; } else if (strcmp(sp, "co") == 0) { cp = "console"; } else { cp = sp; } snprintf(buf, sizeof(buf), _PATH_DEV "%s", cp); if (stat(buf, &st) != -1) goto foundtty; snprintf(buf, sizeof(buf), _PATH_DEV "tty%s", cp); if (stat(buf, &st) != -1) goto foundtty; if (errno == ENOENT) errx(STATUS_BADUSAGE, "No such tty: `%s'", sp); err(STATUS_ERROR, "Cannot access `%s'", sp); foundtty: if ((st.st_mode & S_IFCHR) == 0) errx(STATUS_BADUSAGE, "Not a tty: `%s'", sp); li->li_number = st.st_rdev; break; #ifndef __APPLE__ case LT_JID: if (strcmp(sp, "none") == 0) li->li_number = 0; else if (strcmp(sp, "any") == 0) li->li_number = -1; else if (*ep != '\0') errx(STATUS_BADUSAGE, "Invalid jail ID `%s'", sp); break; #endif /* !__APPLE__ */ default: usage(); } } if (empty) usage(); } static int takepid(const char *pidfile, int pidfilelock) { char *endp, line[BUFSIZ]; FILE *fh; long rval; fh = fopen(pidfile, "r"); if (fh == NULL) err(STATUS_ERROR, "Cannot open pidfile `%s'", pidfile); if (pidfilelock) { /* * If we can lock pidfile, this means that daemon is not * running, so would be better not to kill some random process. */ if (flock(fileno(fh), LOCK_EX | LOCK_NB) == 0) { (void)fclose(fh); errx(STATUS_ERROR, "File '%s' can be locked", pidfile); } else { if (errno != EWOULDBLOCK) { errx(STATUS_ERROR, "Error while locking file '%s'", pidfile); } } } if (fgets(line, sizeof(line), fh) == NULL) { if (feof(fh)) { (void)fclose(fh); errx(STATUS_ERROR, "Pidfile `%s' is empty", pidfile); } (void)fclose(fh); err(STATUS_ERROR, "Cannot read from pid file `%s'", pidfile); } (void)fclose(fh); rval = strtol(line, &endp, 10); if (*endp != '\0' && !isspace((unsigned char)*endp)) errx(STATUS_ERROR, "Invalid pid in file `%s'", pidfile); else if (rval < MIN_PID || rval > MAX_PID) errx(STATUS_ERROR, "Invalid pid in file `%s'", pidfile); return (rval); }