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OpenBSD sigar_proc_args impl

This commit is contained in:
Doug MacEachern 2008-02-18 18:11:50 +00:00
parent 3bd2bd2c6d
commit eccfefcb6b
1 changed files with 33 additions and 5 deletions
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38
src/os/darwin/darwin_sigar.c
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@ -1313,6 +1313,9 @@ static int kern_proc_args_skip_argv(sigar_kern_proc_args_t *kargs)
}
#endif
/* ARG_MAX in FreeBSD 6.0 == 262144, which blows up the stack */
#define SIGAR_ARG_MAX 65536
int sigar_os_proc_args_get(sigar_t *sigar, sigar_pid_t pid,
sigar_proc_args_t *procargs)
{
@ -1358,13 +1361,10 @@ int sigar_os_proc_args_get(sigar_t *sigar, sigar_pid_t pid,
}
return SIGAR_OK;
#else
/* ARG_MAX in FreeBSD 6.0 == 262144, which blows up the stack */
#define SIGAR_ARG_MAX 65536
#elif defined(__FreeBSD__)
char buffer[SIGAR_ARG_MAX+1], *ptr=buffer;
size_t len = sizeof(buffer);
int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_ARGS, 0 };
int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_ARGS, 0 };
mib[3] = pid;
if (sysctl(mib, NMIB(mib), buffer, &len, NULL, 0) < 0) {
@ -1394,6 +1394,34 @@ int sigar_os_proc_args_get(sigar_t *sigar, sigar_pid_t pid,
}
return SIGAR_OK;
#elif defined(__OpenBSD__)
char buffer[SIGAR_ARG_MAX+1], **ptr=(char **)buffer;
size_t len = sizeof(buffer);
int mib[] = { CTL_KERN, KERN_PROC_ARGS, 0, KERN_PROC_ARGV };
mib[2] = pid;
if (sysctl(mib, NMIB(mib), buffer, &len, NULL, 0) < 0) {
return errno;
}
if (len == 0) {
procargs->number = 0;
return SIGAR_OK;
}
for (; *ptr; ptr++) {
int alen = strlen(*ptr)+1;
char *arg = malloc(alen);
SIGAR_PROC_ARGS_GROW(procargs);
memcpy(arg, *ptr, alen);
procargs->data[procargs->number++] = arg;
}
return SIGAR_OK;
#else
return SIGAR_ENOTIMPL;
#endif
}