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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [reent/] [execr.c] - Rev 307
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/* Reentrant versions of execution system calls. These implementations just call the usual system calls. */ #include <reent.h> #include <unistd.h> #include <sys/wait.h> #include <_syslist.h> /* Some targets provides their own versions of these functions. Those targets should define REENTRANT_SYSCALLS_PROVIDED in TARGET_CFLAGS. */ #ifdef _REENT_ONLY #ifndef REENTRANT_SYSCALLS_PROVIDED #define REENTRANT_SYSCALLS_PROVIDED #endif #endif /* If NO_EXEC is defined, we don't need these functions. */ #if defined (REENTRANT_SYSCALLS_PROVIDED) || defined (NO_EXEC) int _dummy_exec_syscalls = 1; #else /* We use the errno variable used by the system dependent layer. */ #undef errno extern int errno; /* FUNCTION <<_execve_r>>---Reentrant version of execve INDEX _execve_r ANSI_SYNOPSIS #include <reent.h> int _execve_r(struct _reent *<[ptr]>, const char *<[name]>, char *const <[argv]>[], char *const <[env]>[]); TRAD_SYNOPSIS #include <reent.h> int _execve_r(<[ptr]>, <[name]>, <[argv]>, <[env]>) struct _reent *<[ptr]>; char *<[name]>; char *<[argv]>[]; char *<[env]>[]; DESCRIPTION This is a reentrant version of <<execve>>. It takes a pointer to the global data block, which holds <<errno>>. */ int _DEFUN (_execve_r, (ptr, name, argv, env), struct _reent *ptr _AND _CONST char *name _AND char *_CONST argv[] _AND char *_CONST env[]) { int ret; errno = 0; if ((ret = _execve (name, argv, env)) == -1 && errno != 0) ptr->_errno = errno; return ret; } /* FUNCTION <<_fork_r>>---Reentrant version of fork INDEX _fork_r ANSI_SYNOPSIS #include <reent.h> int _fork_r(struct _reent *<[ptr]>); TRAD_SYNOPSIS #include <reent.h> int _fork_r(<[ptr]>) struct _reent *<[ptr]>; DESCRIPTION This is a reentrant version of <<fork>>. It takes a pointer to the global data block, which holds <<errno>>. */ #ifndef NO_FORK int _DEFUN (_fork_r, (ptr), struct _reent *ptr) { int ret; errno = 0; if ((ret = _fork ()) == -1 && errno != 0) ptr->_errno = errno; return ret; } #endif /* FUNCTION <<_wait_r>>---Reentrant version of wait INDEX _wait_r ANSI_SYNOPSIS #include <reent.h> int _wait_r(struct _reent *<[ptr]>, int *<[status]>); TRAD_SYNOPSIS #include <reent.h> int _wait_r(<[ptr]>, <[status]>) struct _reent *<[ptr]>; int *<[status]>; DESCRIPTION This is a reentrant version of <<wait>>. It takes a pointer to the global data block, which holds <<errno>>. */ int _DEFUN (_wait_r, (ptr, status), struct _reent *ptr _AND int *status) { int ret; errno = 0; if ((ret = _wait (status)) == -1 && errno != 0) ptr->_errno = errno; return ret; } #endif /* ! defined (REENTRANT_SYSCALLS_PROVIDED) */
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