Rich Felker
ced75472d7
this was added so that posix_spawn and possibly other functionality could be implemented in terms of vfork, but that turned out to be unsafe. any such usage needs __clone with proper handling of stack lifetime.
15 lines
248 B
C
15 lines
248 B
C
#define _GNU_SOURCE
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#include <unistd.h>
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#include <signal.h>
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#include "syscall.h"
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pid_t vfork(void)
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{
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/* vfork syscall cannot be made from C code */
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#ifdef SYS_fork
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return syscall(SYS_fork);
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#else
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return syscall(SYS_clone, SIGCHLD, 0);
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#endif
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}
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