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-rw-r--r--lib/lib.c55
-rw-r--r--lib/lib.h2
-rw-r--r--toys/killall.c229
-rw-r--r--toys/pidof.c70
4 files changed, 296 insertions, 60 deletions
diff --git a/lib/lib.c b/lib/lib.c
index 887910fb..8cc85a9f 100644
--- a/lib/lib.c
+++ b/lib/lib.c
@@ -809,3 +809,58 @@ int yesno(int def)
}
return def;
}
+
+// Execute a callback for each PID that matches a process name from a list.
+int for_each_pid_with_name_in(char **names,
+ void (*callback) (const char *pid)) {
+#define PATH_LEN 64
+
+ DIR *dp;
+ struct dirent *entry;
+ FILE *fp;
+ int n, pathpos;
+ char cmd[PATH_MAX];
+ char path[PATH_LEN];
+ char **curname;
+
+ dp = opendir("/proc");
+ if (!dp) {
+ perror("opendir");
+ return 1;
+ }
+
+ while ((entry = readdir(dp))) {
+ if (!isdigit(entry->d_name[0])) continue;
+ strcpy(path, "/proc/");
+ pathpos = 6;
+
+ if (pathpos + strlen(entry->d_name) + 1 > PATH_LEN) continue;
+
+ strcpy(&path[pathpos], entry->d_name);
+ pathpos += strlen(entry->d_name);
+
+ if (pathpos + strlen("/cmdline") + 1 > PATH_LEN) continue;
+ strcpy(&path[pathpos], "/cmdline");
+
+ fp = fopen(path, "r");
+ if (!fp) {
+ perror("fopen");
+ continue;
+ }
+
+ n = fread(cmd, 1, PATH_MAX, fp);
+ fclose(fp);
+ if (n == 0) continue;
+
+ for (curname = names; *curname; curname++) {
+ if (strcmp(basename(cmd), *curname) == 0) {
+ callback(entry->d_name);
+ }
+ }
+ }
+
+ closedir(dp);
+
+ return 0;
+#undef PATH_LEN
+}
diff --git a/lib/lib.h b/lib/lib.h
index b7f250b8..0193ebd0 100644
--- a/lib/lib.h
+++ b/lib/lib.h
@@ -110,6 +110,8 @@ void replace_tempfile(int fdin, int fdout, char **tempname);
void crc_init(unsigned int *crc_table, int little_endian);
void terminal_size(unsigned *x, unsigned *y);
int yesno(int def);
+int for_each_pid_with_name_in(char **names,
+ void (*callback) (const char *pid));
// getmountlist.c
diff --git a/toys/killall.c b/toys/killall.c
new file mode 100644
index 00000000..fb3e8cb3
--- /dev/null
+++ b/toys/killall.c
@@ -0,0 +1,229 @@
+/* vi: set sw=4 ts=4:
+ *
+ * killall.c - Send a signal (default: TERM) to all processes with the given names.
+ *
+ * Copyright 2012 Andreas Heck <aheck@gmx.de>
+ *
+ * Not in SUSv4.
+ * See http://opengroup.org/onlinepubs/9699919799/utilities/
+
+USE_KILLALL(NEWTOY(killall, "?lq", TOYFLAG_USR|TOYFLAG_BIN))
+
+config KILLALL
+ bool "killall"
+ default y
+ help
+ usage: killall [-l] [-q] [-SIG] PROCESS_NAME...
+
+ Send a signal (default: TERM) to all processes with the given names.
+
+ -l print list of all available signals
+ -q don't print any warnings or error messages
+*/
+
+#include "toys.h"
+
+#define FLAG_q 1
+#define FLAG_l 2
+
+DEFINE_GLOBALS(
+ int matched;
+ int signum;
+)
+#define TT this.killall
+
+struct signame {
+ int num;
+ const char *name;
+};
+
+static struct signame signames[] = {
+#ifdef SIGHUP
+ {SIGHUP, "HUP"},
+#endif
+#ifdef SIGINT
+ {SIGINT, "INT"},
+#endif
+#ifdef SIGQUIT
+ {SIGQUIT, "QUIT"},
+#endif
+#ifdef SIGILL
+ {SIGILL, "ILL"},
+#endif
+#ifdef SIGTRAP
+ {SIGTRAP, "TRAP"},
+#endif
+#ifdef SIGTABRT
+ {SIGABRT, "ABRT"},
+#endif
+#ifdef SIGTABRT
+ {SIGIOT, "IOT"},
+#endif
+#ifdef SIGBUS
+ {SIGBUS, "BUS"},
+#endif
+#ifdef SIGFPE
+ {SIGFPE, "FPE"},
+#endif
+#ifdef SIGKILL
+ {SIGKILL, "KILL"},
+#endif
+#ifdef SIGUSR1
+ {SIGUSR1, "USR1"},
+#endif
+#ifdef SIGSEGV
+ {SIGSEGV, "SEGV"},
+#endif
+#ifdef SIGUSR2
+ {SIGUSR2, "USR2"},
+#endif
+#ifdef SIGPIPE
+ {SIGPIPE, "PIPE"},
+#endif
+#ifdef SIGALRM
+ {SIGALRM, "ALRM"},
+#endif
+#ifdef SIGTERM
+ {SIGTERM, "TERM"},
+#endif
+#ifdef SIGSTKFLT
+ {SIGSTKFLT, "STKFLT"},
+#endif
+#ifdef SIGCHLD
+ {SIGCHLD, "CHLD"},
+#endif
+#ifdef SIGCONT
+ {SIGCONT, "CONT"},
+#endif
+#ifdef SIGSTOP
+ {SIGSTOP, "STOP"},
+#endif
+#ifdef SIGSTOP
+ {SIGSTOP, "STOP"},
+#endif
+#ifdef SIGTSTP
+ {SIGTSTP, "TSTP"},
+#endif
+#ifdef SIGTTIN
+ {SIGTTIN, "TTIN"},
+#endif
+#ifdef SIGTTOU
+ {SIGTTOU, "TTOU"},
+#endif
+#ifdef SIGURG
+ {SIGURG, "URG"},
+#endif
+#ifdef SIGXCPU
+ {SIGXCPU, "XCPU"},
+#endif
+#ifdef SIGXFSZ
+ {SIGXFSZ, "XFSZ"},
+#endif
+#ifdef SIGVTALRM
+ {SIGVTALRM, "VTALRM"},
+#endif
+#ifdef SIGVTALRM
+ {SIGVTALRM, "VTALRM"},
+#endif
+#ifdef SIGPROF
+ {SIGPROF, "PROF"},
+#endif
+#ifdef SIGWINCH
+ {SIGWINCH, "WINCH"},
+#endif
+#ifdef SIGIO
+ {SIGIO, "IO"},
+#endif
+#ifdef SIGPOLL
+ {SIGPOLL, "POLL"},
+#endif
+#ifdef SIGPWR
+ {SIGPWR, "PWR"},
+#endif
+#ifdef SIGSYS
+ {SIGSYS, "SYS"},
+#endif
+#ifdef SIGUNUSED
+ {SIGUNUSED, "UNUSED"},
+#endif
+ {0, NULL}
+};
+
+static int sig_to_num(const char *pidstr) {
+ int i, num;
+
+ if (isdigit(pidstr[0])) {
+ num = atoi(pidstr);
+
+ return num;
+ }
+
+ for (i = 0; signames[i].num; i++) {
+ if (strcmp(pidstr, signames[i].name) == 0) {
+ return signames[i].num;
+ }
+ }
+
+ return -1;
+}
+
+static void print_signals() {
+ int i;
+
+ for (i = 0; signames[i].num; i++) {
+ puts(signames[i].name);
+ }
+}
+
+static void kill_process(const char *pidstr) {
+ int ret;
+ pid_t pid = atoi(pidstr);
+
+ TT.matched = 1;
+ ret = kill(pid, TT.signum);
+
+ if (ret == -1) {
+ if (toys.optflags & FLAG_q) perror("kill");
+ }
+}
+
+void killall_main(void)
+{
+ char **names;
+
+ TT.matched = 0;
+ TT.signum = SIGTERM;
+
+ if (toys.optflags & FLAG_l) {
+ print_signals();
+ exit(0);
+ }
+
+ if (!*toys.optargs) {
+ toys.exithelp = 1;
+ error_exit("Process name missing!");
+ }
+
+ names = toys.optargs;
+
+ if ((*toys.optargs)[0] == '-') {
+ TT.signum = sig_to_num(&(*toys.optargs)[1]);
+ if (TT.signum <= 0) {
+ if (toys.optflags & FLAG_q) fprintf(stderr, "Invalid signal\n");
+ exit(1);
+ }
+ names = ++toys.optargs;
+ }
+
+ if (!*names) {
+ toys.exithelp = 1;
+ error_exit("Process name missing!");
+ }
+
+ for_each_pid_with_name_in(names, kill_process);
+
+ if (!TT.matched) {
+ if (!(toys.optflags & FLAG_q)) fprintf(stderr, "No such process\n");
+ exit(1);
+ }
+}
diff --git a/toys/pidof.c b/toys/pidof.c
index c6f0d556..329b0084 100644
--- a/toys/pidof.c
+++ b/toys/pidof.c
@@ -7,7 +7,7 @@
* Not in SUSv4.
* See http://opengroup.org/onlinepubs/9699919799/utilities/
-USE_PIDOF(NEWTOY(pidof, "e@d*c#b:a", TOYFLAG_USR|TOYFLAG_BIN))
+USE_PIDOF(NEWTOY(pidof, "", TOYFLAG_USR|TOYFLAG_BIN))
config PIDOF
bool "pidof"
@@ -20,80 +20,30 @@ config PIDOF
#include "toys.h"
+DEFINE_GLOBALS(
+ int matched;
+)
#define TT this.pidof
-#define PATH_LEN 64
-#define PROC_DIR "/proc/"
-#define CMD_LINE "/cmdline"
-
-static int matched = 0;
-
-static int for_each_pid(void (*callback) (const char *pid)) {
- DIR *dp;
- struct dirent *entry;
- FILE *fp;
- int n, pathpos;
- char cmd[PATH_MAX];
- char path[PATH_LEN];
- char **curname;
-
- dp = opendir(PROC_DIR);
- if (!dp) {
- perror("opendir");
- return 1;
- }
-
- while ((entry = readdir(dp))) {
- if (!isdigit(entry->d_name[0])) continue;
- strcpy(path, PROC_DIR);
- pathpos = strlen(PROC_DIR);
-
- if (pathpos + strlen(entry->d_name) + 1 > PATH_LEN) continue;
-
- strcpy(&path[pathpos], entry->d_name);
- pathpos += strlen(entry->d_name);
-
- if (pathpos + strlen(CMD_LINE) + 1 > PATH_LEN) continue;
- strcpy(&path[pathpos], CMD_LINE);
-
- fp = fopen(path, "r");
- if (!fp) {
- perror("fopen");
- continue;
- }
-
- n = fread(cmd, 1, PATH_MAX, fp);
- fclose(fp);
- if (n == 0) continue;
-
- for (curname = toys.optargs; *curname; curname++) {
- if (strcmp(basename(cmd), *curname) == 0) {
- callback(entry->d_name);
- }
- }
- }
-
- closedir(dp);
-
- return 0;
-}
static void print_pid (const char *pid) {
- if (matched) putchar(' ');
+ if (TT.matched) putchar(' ');
fputs(pid, stdout);
- matched = 1;
+ TT.matched = 1;
}
void pidof_main(void)
{
int err;
+ TT.matched = 0;
+
if (!toys.optargs) exit(1);
- err = for_each_pid(print_pid);
+ err = for_each_pid_with_name_in(toys.optargs, print_pid);
if (err) exit(1);
- if (!matched)
+ if (!TT.matched)
exit(1);
else
putchar('\n');
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 10:40:00 +0000