mirror of https://github.com/sheumann/hush.git
31 lines
621 B
C
31 lines
621 B
C
#include <unistd.h>
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#include "libbb.h"
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/* Like vfork, but calls fn(arg) in the child instead of returning.
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* This is designed to match the semantics of GNO's fork2 call.
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*/
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#ifndef __GNO__
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pid_t vfork_and_run(void (*fn)(void*) NORETURN, void *arg) {
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pid_t pid = vfork();
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if (pid == 0) {
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fn(arg);
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}
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return pid;
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}
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#else
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pid_t vfork_and_run(void (*fn)(void*) NORETURN, void *arg) {
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return fork2((fn), 1024, 0, "hush (forked)", 2, (arg));
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}
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#endif
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pid_t xvfork_and_run(void (*fn)(void*) NORETURN, void *arg) {
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pid_t pid = vfork_and_run(fn, arg);
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if (pid < 0)
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bb_perror_msg_and_die("vfork");
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return pid;
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}
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