diff options
Diffstat (limited to 'include/unistd.h')
| -rw-r--r-- | include/unistd.h | 53 |
1 files changed, 19 insertions, 34 deletions
diff --git a/include/unistd.h b/include/unistd.h index fa1caf27b..57a203dfd 100644 --- a/include/unistd.h +++ b/include/unistd.h @@ -36,6 +36,10 @@ extern int symlink __P ((__const char *__from, __const char *__to)); extern int readlink __P ((__const char *__path, char *__buf, size_t __len)); extern int unlink __P ((__const char *__name)); extern char *getcwd __P ((char *__buf, size_t __size)); +/* Duplicate FD, returning a new file descriptor on the same file. */ +extern int dup __P ((int __fd)); +/* Duplicate FD to FD2, closing FD2 and making it open on the same file. */ +extern int dup2 __P ((int __fd, int __fd2)); extern int fchdir __P ((int __fd)); extern int chdir __P ((__const char *__path)); extern int chown __P ((__const char *__file, @@ -90,44 +94,25 @@ extern int execve __P ((__const char *__path, char *__const __argv[], extern int execvp __P ((__const char *__file, char *__const __argv[])); +/* Execute PATH with arguments ARGV and environment ENVP. */ +extern int execvep __P ((__const char *path, char *__const __argv[], + char *__const __envp[])); +/* Terminate program execution with the low-order 8 bits of STATUS. */ +extern void _exit __P ((int __status)) __attribute__ ((__noreturn__)); +/* Clone the calling process, creating an exact copy. + * Return -1 for errors, 0 to the new process, + * and the process ID of the new process to the old process. */ +extern __pid_t __fork __P ((void)); +extern __pid_t fork __P ((void)); -#if 0 -#ifndef SYS_fork -#define SYS_fork 2 -#endif - -#define vfork() ({ \ -register long __res __asm__ ("%d0"); \ -__asm__ __volatile__ ("trap #0" \ - : "=g" (__res) \ - : "0" (SYS_fork) \ - : "%d0"); \ -__res; \ -}) -#endif - -#ifdef __mc68000__ - -#define vfork() ({ \ -register unsigned long __res __asm__ ("%d0") = __NR_fork; \ -__asm__ __volatile__ ("trap #0" \ - : "=g" (__res) \ - : "0" (__res) \ - : "%d0"); \ -if (__res >= (unsigned long)-4096) { \ - errno = -__res; \ - __res = (pid_t)-1; \ -} \ -(pid_t)__res; \ -}) - - +/* Clone the calling process, but without copying the whole address space. + * The calling process is suspended until the new process exits or is + * replaced by a call to `execve'. Return -1 for errors, 0 to the new process, + * and the process ID of the new process to the old process. */ +extern __pid_t vfork __P ((void)); -#define fork fork_not_available_use_vfork -#define clone clone_not_available_use__clone -#endif #ifndef SEEK_SET #define SEEK_SET 0 |