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Further improve usability of cosmocc

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- Support -s flag in cosmocc
- Support posix_spawn() setsid() feature
- Disable monorepo debug path prefix stripping
This commit is contained in:
Justine Tunney 2023-07-10 05:55:00 -07:00
parent f7ae50462a
commit ee6566a152
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GPG key ID: BE714B4575D6E328
9 changed files with 40 additions and 15 deletions
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6
libc/stdio/posix_spawn.c
View file

@ -84,6 +84,12 @@ int posix_spawn(int *pid, const char *path,
if (!(child = vfork())) {
if (attrp && *attrp) {
posix_spawnattr_getflags(attrp, &flags);
if (flags & POSIX_SPAWN_SETSID) {
if (setsid()) {
STRACE("posix_spawn fail #%d", 1);
_Exit(127);
}
}
if (flags & POSIX_SPAWN_SETPGROUP) {
if (setpgid(0, (*attrp)->pgroup)) {
STRACE("posix_spawn fail #%d", 1);

13
libc/stdio/posix_spawn.h
View file

@ -3,12 +3,13 @@
#include "libc/calls/struct/sched_param.h"
#include "libc/calls/struct/sigset.h"
#define POSIX_SPAWN_RESETIDS 0x01
#define POSIX_SPAWN_SETPGROUP 0x02
#define POSIX_SPAWN_SETSIGDEF 0x04
#define POSIX_SPAWN_SETSIGMASK 0x08
#define POSIX_SPAWN_SETSCHEDPARAM 0x10
#define POSIX_SPAWN_SETSCHEDULER 0x20
#define POSIX_SPAWN_RESETIDS 1
#define POSIX_SPAWN_SETPGROUP 2
#define POSIX_SPAWN_SETSIGDEF 4
#define POSIX_SPAWN_SETSIGMASK 8
#define POSIX_SPAWN_SETSCHEDPARAM 16
#define POSIX_SPAWN_SETSCHEDULER 32
#define POSIX_SPAWN_SETSID 128
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_

8
libc/stdio/posix_spawnattr.c
View file

@ -89,6 +89,7 @@ int posix_spawnattr_getflags(const posix_spawnattr_t *attr, short *flags) {
* - `POSIX_SPAWN_SETSIGMASK`
* - `POSIX_SPAWN_SETSCHEDPARAM`
* - `POSIX_SPAWN_SETSCHEDULER`
* - `POSIX_SPAWN_SETSID`
* @return 0 on success, or errno on error
* @raise EINVAL if `flags` has invalid bits
*/
@ -96,9 +97,10 @@ int posix_spawnattr_setflags(posix_spawnattr_t *attr, short flags) {
if (!(IsLinux() || IsFreebsd() || IsNetbsd())) {
flags &= ~(POSIX_SPAWN_SETSCHEDPARAM | POSIX_SPAWN_SETSCHEDULER);
}
if (flags & ~(POSIX_SPAWN_RESETIDS | POSIX_SPAWN_SETPGROUP |
POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETSIGMASK |
POSIX_SPAWN_SETSCHEDPARAM | POSIX_SPAWN_SETSCHEDULER)) {
if (flags &
~(POSIX_SPAWN_RESETIDS | POSIX_SPAWN_SETPGROUP | POSIX_SPAWN_SETSIGDEF |
POSIX_SPAWN_SETSIGMASK | POSIX_SPAWN_SETSCHEDPARAM |
POSIX_SPAWN_SETSCHEDULER | POSIX_SPAWN_SETSID)) {
return EINVAL;
}
(*attr)->flags = flags;