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authorGravatar Denis Vlasenko <vda.linux@googlemail.com>2008-03-17 09:29:43 +0000
committerGravatar Denis Vlasenko <vda.linux@googlemail.com>2008-03-17 09:29:43 +0000
commitb44c790e41e281965955a83408f35ea53ecdb3d2 (patch)
tree98514dba64f7b74b9d60882bfeca1e2c4976b033 /miscutils/taskset.c
parentd25c33f186c7cf3618c34ce79af94fe156f9ab02 (diff)
downloadbusybox-b44c790e41e281965955a83408f35ea53ecdb3d2.tar.gz
busybox-b44c790e41e281965955a83408f35ea53ecdb3d2.tar.bz2
*: fix various kinds of damage to letter 'c' in Arkadiusz Mickiewicz' surname.
chrt,taskset,dc,eject: shrink crontab: call "vi" with just name, no path watchdog: intercept all fatal signals function old new delta xstrtoull_range - 35 +35 static.sg_commands - 18 +18 packed_usage 23698 23712 +14 watchdog_main 148 151 +3 crontab_main 637 638 +1 base 1 - -1 static.ps 4 - -4 pointer 4 - -4 stack_machine 99 92 -7 run_command 273 260 -13 eject_main 360 343 -17 static.C 30 12 -18 ptok 61 38 -23 xstrtol_range 27 - -27 get_token 35 - -35 taskset_main 586 550 -36 chrt_main 411 372 -39 dc_main 158 117 -41 time_main 1127 1037 -90 ------------------------------------------------------------------------------ (add/remove: 2/5 grow/shrink: 3/9 up/down: 71/-355) Total: -284 bytes text data bss dec hex filename 793680 662 7420 801762 c3be2 busybox_old 793327 662 7412 801401 c3a79 busybox_unstripped
Diffstat (limited to 'miscutils/taskset.c')
-rw-r--r--miscutils/taskset.c88
1 files changed, 49 insertions, 39 deletions
diff --git a/miscutils/taskset.c b/miscutils/taskset.c
index e64fd655b..6247aa869 100644
--- a/miscutils/taskset.c
+++ b/miscutils/taskset.c
@@ -39,61 +39,71 @@ static char *__from_cpuset(cpu_set_t *mask)
#define from_cpuset(mask) (*(unsigned*)(void*)&(mask))
#endif
-#define OPT_p 1
int taskset_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int taskset_main(int argc, char **argv)
+int taskset_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
- cpu_set_t mask, new_mask;
+ cpu_set_t mask;
pid_t pid = 0;
- unsigned opt;
- const char *state = "current\0new";
- char *p_opt = NULL, *aff = NULL;
+ unsigned opt_p;
+ const char *current_new;
+ char *pid_str;
+ char *aff = aff; /* for compiler */
- opt = getopt32(argv, "+p:", &p_opt);
+ opt_complementary = "-1"; /* at least 1 arg */
+ opt_p = getopt32(argv, "+p");
+ argv += optind;
- if (opt & OPT_p) {
- if (argc == optind+1) { /* -p <aff> <pid> */
- aff = p_opt;
- p_opt = argv[optind];
- }
- argv += optind; /* me -p <arg> */
- pid = xatoul_range(p_opt, 1, ULONG_MAX); /* -p <pid> */
- } else
- aff = *++argv; /* <aff> <cmd...> */
- if (aff) {
- unsigned i = 0;
- unsigned long l = xstrtol_range(aff, 0, 1, LONG_MAX);
-
- CPU_ZERO(&new_mask);
- while (i < CPU_SETSIZE && l >= (1<<i)) {
- if ((1<<i) & l)
- CPU_SET(i, &new_mask);
- ++i;
+ if (opt_p) {
+ pid_str = *argv++;
+ if (*argv) { /* "-p <aff> <pid> ...rest.is.ignored..." */
+ aff = pid_str;
+ pid_str = *argv; /* NB: *argv != NULL in this case */
}
+ /* else it was just "-p <pid>", and *argv == NULL */
+ pid = xatoul_range(pid_str, 1, ((unsigned)(pid_t)ULONG_MAX) >> 1);
+ } else {
+ aff = *argv++; /* <aff> <cmd...> */
+ if (!*argv)
+ bb_show_usage();
}
- if (opt & OPT_p) {
+ current_new = "current\0new";
+ if (opt_p) {
print_aff:
if (sched_getaffinity(pid, sizeof(mask), &mask) < 0)
- bb_perror_msg_and_die("failed to %cet pid %d's affinity", 'g', pid);
+ bb_perror_msg_and_die("can't %cet pid %d's affinity", 'g', pid);
printf("pid %d's %s affinity mask: "TASKSET_PRINTF_MASK"\n",
- pid, state, from_cpuset(mask));
- if (!*argv) /* no new affinity given or we did print already, done. */
+ pid, current_new, from_cpuset(mask));
+ if (!*argv) {
+ /* Either it was just "-p <pid>",
+ * or it was "-p <aff> <pid>" and we came here
+ * for the second time (see goto below) */
return EXIT_SUCCESS;
+ }
+ *argv = NULL;
+ current_new += 8; /* "new" */
}
- if (sched_setaffinity(pid, sizeof(new_mask), &new_mask))
- bb_perror_msg_and_die("failed to %cet pid %d's affinity", 's', pid);
- if (opt & OPT_p) {
- state += 8;
- ++argv;
- goto print_aff;
+ { /* Affinity was specified, translate it into cpu_set_t */
+ unsigned i;
+ /* Do not allow zero mask: */
+ unsigned long long m = xstrtoull_range(aff, 0, 1, ULLONG_MAX);
+ CPU_ZERO(&mask);
+ for (i = 0; i < CPU_SETSIZE; i++) {
+ unsigned long long bit = (1ULL << i);
+ if (bit & m)
+ CPU_SET(i, &mask);
+ }
}
- ++argv;
+
+ /* Set pid's or our own (pid==0) affinity */
+ if (sched_setaffinity(pid, sizeof(mask), &mask))
+ bb_perror_msg_and_die("can't %cet pid %d's affinity", 's', pid);
+
+ if (!*argv) /* "-p <aff> <pid> [...ignored...]" */
+ goto print_aff; /* print new affinity and exit */
+
BB_EXECVP(*argv, argv);
bb_simple_perror_msg_and_die(*argv);
}
-#undef OPT_p
-#undef TASKSET_PRINTF_MASK
-#undef from_cpuset