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| author | phk <phk@FreeBSD.org> | 1999-11-16 20:31:58 +0000 |
|---|---|---|
| committer | phk <phk@FreeBSD.org> | 1999-11-16 20:31:58 +0000 |
| commit | cc6b664e2eb821b39837e7bb980e5ee87e201491 (patch) | |
| tree | 65eeb4add32e588f36f28e2a0bb819c17a67ff70 /lib/libc | |
| parent | 47e5f46c7642e6d8e2ed20c8afca59596d3c2dc1 (diff) | |
| download | FreeBSD-src-cc6b664e2eb821b39837e7bb980e5ee87e201491.zip FreeBSD-src-cc6b664e2eb821b39837e7bb980e5ee87e201491.tar.gz | |
Introduce commandline caching in the kernel.
This fixes some nasty procfs problems for SMP, makes ps(1) run much faster,
and makes ps(1) even less dependent on /proc which will aid chroot and
jails alike.
To disable this facility and revert to previous behaviour:
sysctl -w kern.ps_arg_cache_limit=0
For full details see the current@FreeBSD.org mail-archives.
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/gen/setproctitle.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/libc/gen/setproctitle.c b/lib/libc/gen/setproctitle.c index a5cf234..36c21db 100644 --- a/lib/libc/gen/setproctitle.c +++ b/lib/libc/gen/setproctitle.c @@ -29,6 +29,7 @@ #include <stdio.h> #include <string.h> #include <stdlib.h> +#include <unistd.h> /* * Older FreeBSD 2.0, 2.1 and 2.2 had different ps_strings structures and @@ -74,6 +75,7 @@ setproctitle(fmt, va_alist) va_list ap; size_t len; unsigned long ul_ps_strings; + int oid[4]; #if defined(__STDC__) va_start(ap, fmt); @@ -103,6 +105,13 @@ setproctitle(fmt, va_alist) va_end(ap); + /* Set the title into the kernel cached command line */ + oid[0] = CTL_KERN; + oid[1] = KERN_PROC; + oid[2] = KERN_PROC_ARGS; + oid[3] = getpid(); + sysctl(oid, 4, 0, 0, buf, strlen(buf) + 1); + if (ps_strings == NULL) { len = sizeof(ul_ps_strings); if (sysctlbyname("kern.ps_strings", &ul_ps_strings, &len, NULL, |
