23 lines
536 B
C
23 lines
536 B
C
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#include <sys/cdefs.h>
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#include "namespace.h"
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#include <lib.h>
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#include <unistd.h>
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#ifdef __weak_alias
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__weak_alias(getppid, _getppid)
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#endif
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PUBLIC pid_t getppid()
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{
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message m;
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/* POSIX says that this function is always successful and that no
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* return value is reserved to indicate an error. Minix syscalls
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* are not always successful and Minix returns the reserved value
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* (pid_t) -1 when there is an error.
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*/
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if (_syscall(PM_PROC_NR, MINIX_GETPID, &m) < 0) return ( (pid_t) -1);
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return( (pid_t) m.m2_i1);
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}
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