diff options
| -rw-r--r-- | include/usage.h | 27 | ||||
| -rw-r--r-- | procps/Config.in | 16 | ||||
| -rw-r--r-- | procps/pidof.c | 126 |
3 files changed, 136 insertions, 33 deletions
diff --git a/include/usage.h b/include/usage.h index fad50ef..bef6a4d 100644 --- a/include/usage.h +++ b/include/usage.h @@ -2160,16 +2160,37 @@ "$ patch -p1 <example.diff\n" \ "$ patch -p0 -i example.diff" +#if ENABLE_FEATURE_PIDOF_SINGLE +#define USAGE_FEATURE_PIDOF_SINGLE(a) a +#else +#define USAGE_FEATURE_PIDOF_SINGLE(a) +#endif +#if ENABLE_FEATURE_PIDOF_OMIT +#define USAGE_FEATURE_PIDOF_OMIT(a) a +#else +#define USAGE_FEATURE_PIDOF_OMIT(a) +#endif +#if (ENABLE_FEATURE_PIDOF_SINGLE || ENABLE_FEATURE_PIDOF_OMIT) +#define USAGE_PIDOF "Options:" +#else +#define USAGE_PIDOF "\n\tThis version of pidof accepts no options." +#endif + #define pidof_trivial_usage \ "process-name [OPTION] [process-name ...]" + #define pidof_full_usage \ "Lists the PIDs of all processes with names that match the\n" \ "names on the command line.\n" \ - "Options:\n" \ - "\t-s\t\tdisplay only a single PID" + USAGE_PIDOF \ + USAGE_FEATURE_PIDOF_SINGLE("\n\t-s\t\tdisplay only a single PID") \ + USAGE_FEATURE_PIDOF_OMIT("\n\t-o\t\tomit given pid.") \ + USAGE_FEATURE_PIDOF_OMIT("\n\t\t\tUse %PPID to omit the parent pid of pidof itself") #define pidof_example_usage \ "$ pidof init\n" \ - "1\n" + "1\n" \ + USAGE_FEATURE_PIDOF_OMIT("$ pidof /bin/sh\n20351 5973 5950\n") \ + USAGE_FEATURE_PIDOF_OMIT("$ pidof /bin/sh -o %PPID\n20351 5950") #ifndef CONFIG_FEATURE_FANCY_PING #define ping_trivial_usage "host" diff --git a/procps/Config.in b/procps/Config.in index d17bbcd..b4832db 100644 --- a/procps/Config.in +++ b/procps/Config.in @@ -37,6 +37,22 @@ config CONFIG_PIDOF Pidof finds the process id's (pids) of the named programs. It prints those id's on the standard output. +config CONFIG_FEATURE_PIDOF_SINGLE + bool " Enable argument for single shot (-s)" + default n + depends on CONFIG_PIDOF + help + Support argument '-s' for returning only the first pid found. + +config CONFIG_FEATURE_PIDOF_OMIT + bool " Enable argument for omitting pids (-o)" + default n + depends on CONFIG_PIDOF + help + Support argument '-o' for omitting the given pids in output. + The special pid %PPID can be used to name the parent process + of the pidof, in other words the calling shell or shell script. + config CONFIG_PS bool "ps" default n diff --git a/procps/pidof.c b/procps/pidof.c index 413864a..6f959e4 100644 --- a/procps/pidof.c +++ b/procps/pidof.c @@ -4,20 +4,7 @@ * * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * + * Licensed under the GPL v2, see the file LICENSE in this tarball. */ @@ -31,41 +18,120 @@ #include <unistd.h> #include "busybox.h" +#if ENABLE_FEATURE_PIDOF_SINGLE +#define _SINGLE_COMPL(a) a +#define SINGLE (1<<0) +#else +#define _SINGLE_COMPL(a) +#define SINGLE (0) +#endif + +#if ENABLE_FEATURE_PIDOF_OMIT +#define _OMIT_COMPL(a) a +#define _OMIT(a) ,a +static llist_t *omits; /* list of pids to omit */ +#if ENABLE_FEATURE_PIDOF_SINGLE +#define OMIT (1<<1) +#else +#define OMIT (1<<0) +#endif +#else +#define _OMIT_COMPL(a) "" +#define _OMIT(a) +#define OMIT (0) +#endif extern int pidof_main(int argc, char **argv) { - int opt, n = 0; - int single_flag = 0; + int n = 0; int fail = 1; + unsigned long int opt; +#if ENABLE_FEATURE_PIDOF_OMIT + bb_opt_complementally = _OMIT_COMPL("o*"); +#endif - /* do normal option parsing */ - while ((opt = getopt(argc, argv, "s")) > 0) { - switch (opt) { - case 's': - single_flag = 1; - break; - default: - bb_show_usage(); - } + /* do option parsing */ + if ((opt = bb_getopt_ulflags(argc, argv, + _SINGLE_COMPL("s") _OMIT_COMPL("o:") + _OMIT(&omits))) + > 0) { +#if ENABLE_FEATURE_PIDOF_SINGLE + if (!(opt & SINGLE)) +#endif +#if ENABLE_FEATURE_PIDOF_OMIT + if (!(opt & OMIT)) +#endif + bb_show_usage(); } - /* Looks like everything is set to go. */ +#if ENABLE_FEATURE_PIDOF_OMIT + /* fill omit list. */ + { + RESERVE_CONFIG_BUFFER(getppid_str, 32); + llist_t * omits_p = omits; + while (omits_p) { + /* are we asked to exclude the parent's process ID? */ + if (omits_p->data[0] == '%') { + if (!strncmp(omits_p->data, "%PPID", 5)) { + /* yes, exclude ppid */ + snprintf(getppid_str, sizeof(getppid_str), "%ld", getppid()); +// omits_p->data = getppid_str; +#if 0 + } else { + bb_error_msg_and_die("illegal omit pid value (%s)!\n", + omits_p->data); +#endif + } + } else { + /* no, not talking about ppid but deal with usual case (pid). */ + snprintf(getppid_str, sizeof(getppid_str), "%ld", + strtol(omits_p->data, NULL, 10)); + } + omits_p->data = getppid_str; + omits_p = omits_p->link; + } + RELEASE_CONFIG_BUFFER(getppid_str); + } +#endif + /* Looks like everything is set to go. */ while(optind < argc) { long *pidList; long *pl; - pidList = find_pid_by_name(argv[optind]); + /* reverse the pidlist like GNU pidof does. */ + pidList = pidlist_reverse(find_pid_by_name(argv[optind])); for(pl = pidList; *pl > 0; pl++) { +#if ENABLE_FEATURE_PIDOF_OMIT + unsigned short omitted = 0; + if (opt & OMIT) { + llist_t *omits_p = omits; + while (omits_p) + if (strtol(omits_p->data, NULL, 10) == *pl) { + omitted = 1; break; + } else + omits_p = omits_p->link; + } + if (!omitted) +#endif printf("%s%ld", (n++ ? " " : ""), *pl); +#if ENABLE_FEATURE_PIDOF_OMIT + fail = omitted; +#else fail = 0; - if (single_flag) +#endif +#if ENABLE_FEATURE_PIDOF_SINGLE + if (opt & SINGLE) break; +#endif } free(pidList); optind++; - } - printf("\n"); + putchar('\n'); +#if ENABLE_FEATURE_PIDOF_OMIT + if (ENABLE_FEATURE_CLEAN_UP) + llist_free(omits); +#endif return fail ? EXIT_FAILURE : EXIT_SUCCESS; } |