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Everywhere: Replace some uses of fork/exec with posix_spawn

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It's less code, and it's potentially more efficient once
posix_spawn is a real syscall.
This commit is contained in:
Nico Weber 2020-06-28 13:40:10 -04:00 • committed by Andreas Kling
parent 301ac3c7e5
commit 12cbc4ad0d
11 changed files with 65 additions and 101 deletions
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13
Libraries/LibC/stdlib.cpp
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@ -36,6 +36,7 @@
#include <ctype.h>
#include <errno.h>
#include <signal.h>
#include <spawn.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@ -706,16 +707,10 @@ int system(const char* command)
if (!command)
return 1;
auto child = fork();
if (child < 0)
pid_t child;
const char* argv[] = { "sh", "-c", command, nullptr };
if ((errno = posix_spawn(&child, "/bin/sh", nullptr, nullptr, const_cast<char**>(argv), environ)))
return -1;
if (!child) {
int rc = execl("/bin/sh", "sh", "-c", command, nullptr);
ASSERT(rc < 0);
perror("execl");
exit(127);
}
int wstatus;
waitpid(child, &wstatus, 0);
return WEXITSTATUS(wstatus);