+2000-04-15 Ulrich Drepper <drepper@redhat.com>
+
+ * posix/Makefile (headers): Add spawn.h.
+ (distribute): Add spawn_int.h.
+ (routines): Add spawn_faction_init, spawn_faction_destroy,
+ spawn_faction_addclose, spawn_faction_addopen, spawn_faction_adddup2,
+ spawnattr_init, spawnattr_destroy, spawnattr_getdefault,
+ spawnattr_setdefault, spawnattr_getflags, spawnattr_setflags,
+ spawnattr_getpgroup, spawnattr_setpgroup, spawn, spawnp, and spawni.
+ * posix/Versions [libc] (GLIBC_2.2): Add posix_spawn_file_actions_init,
+ posix_spawn_file_actions_destroy, posix_spawn_file_actions_addclose,
+ posix_spawn_file_actions_addopen, posix_spawn_file_actions_adddup2,
+ posix_spawnattr_init, posix_spawnattr_destroy,
+ posix_spawnattr_getdefault, posix_spawnattr_setdefault,
+ posix_spawnattr_getflags, posix_spawnattr_setflags,
+ posix_spawnattr_getpgroup, posix_spawnattr_setpgroup, posix_spawn,
+ and posix_spawnp.
+ * posix/spawn.c: New file.
+ * posix/spawn.h: New file.
+ * posix/spawn_faction_addclose.c: New file.
+ * posix/spawn_faction_adddup2.c: New file.
+ * posix/spawn_faction_addopen.c: New file.
+ * posix/spawn_faction_destroy.c: New file.
+ * posix/spawn_faction_init.c: New file.
+ * posix/spawn_int.h: New file.
+ * posix/spawnattr_destroy.c: New file.
+ * posix/spawnattr_getdefault.c: New file.
+ * posix/spawnattr_getflags.c: New file.
+ * posix/spawnattr_getpgroup.c: New file.
+ * posix/spawnattr_getschedparam.c: New file.
+ * posix/spawnattr_getschedpolicy.c: New file.
+ * posix/spawnattr_getsigmask.c: New file.
+ * posix/spawnattr_init.c: New file.
+ * posix/spawnattr_setdefault.c: New file.
+ * posix/spawnattr_setflags.c: New file.
+ * posix/spawnattr_setpgroup.c: New file.
+ * posix/spawnattr_setschedparam.c: New file.
+ * posix/spawnattr_setschedpolicy.c: New file.
+ * posix/spawnattr_setsigmask.c: New file.
+ * posix/spawni.c: New file.
+ * posix/spawnp.c: New file.
+
+ * sysdeps/mach/hurd/bits/posix_opt.h: Add _POSIX_SPAWN.
+ * sysdeps/unix/sysv/linux/bits/posix_opt.h: Likewise.
+
2000-04-14 Ulrich Drepper <drepper@redhat.com>
* malloc/Versions [libc] (GLIBC_2.2): Add posix_memalign.
2000-04-15 Ulrich Drepper <drepper@redhat.com>
+ * internals.h (WRITE_MEMORY_BARRIER): Define as MEMORY_BARRIER if
+ undefined.
+ * spinlock.c: Use WRITE_MEMORY_BARRIER instead of MEMORY_BARRIER
+ where possible.
+ * sysdeps/alpha/pt-machine.h: Define WRITE_MEMORY_BARRIER.
+ * sysdeps/sparc/sparc64/pt-machine.h: Likewise.
+
* sysdeps/unix/sysv/linux/bits/posix_opt.h: Add _POSIX_SPAWN.
* sysdeps/unix/sysv/linux/i386/bits/posix_opt.h: Likewise.
}
/* If MEMORY_BARRIER isn't defined in pt-machine.h, assume the architecture
- doesn't need a memory barrier instruction (e.g. Intel x86) */
+ doesn't need a memory barrier instruction (e.g. Intel x86). Some
+ architectures distinguish between normal/read and write barriers. */
#ifndef MEMORY_BARRIER
#define MEMORY_BARRIER()
#endif
+#ifndef WRITE_MEMORY_BARRIER
+#define WRITE_MEMORY_BARRIER() MEMORY_BARRIER()
+#endif
/* Max number of times we must spin on a spinlock calling sched_yield().
After MAX_SPIN_COUNT iterations, we put the calling thread to sleep. */
THREAD_SETMEM(self, p_nextlock, (pthread_descr) oldstatus);
/* Make sure the store in p_nextlock completes before performing
the compare-and-swap */
- MEMORY_BARRIER();
+ WRITE_MEMORY_BARRIER();
}
} while(! compare_and_swap(&lock->__status, oldstatus, newstatus,
&lock->__spinlock));
res = 0;
}
/* Prevent reordering of store to *ptr above and store to *spinlock below */
- MEMORY_BARRIER();
+ WRITE_MEMORY_BARRIER();
*spinlock = 0;
return res;
}
/* Machine-dependent pthreads configuration and inline functions.
Alpha version.
- Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <rth@tamu.edu>.
/* Memory barrier; default is to do nothing */
#define MEMORY_BARRIER() __asm__ __volatile__("mb" : : : "memory")
+/* Write barrier. */
+#define WRITE_MEMORY_BARRIER() __asm__ __volatile__("wmb" : : : "memory")
/* Spinlock implementation; required. */
/* Machine-dependent pthreads configuration and inline functions.
Sparc v9 version.
- Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <rth@tamu.edu>.
/* FIXME: is stbar OK, or should we use the more general membar instruction?
If so, which mode to pass to membar? */
#define MEMORY_BARRIER() __asm__ __volatile__("stbar" : : : "memory")
+/* Write barrier. */
+#define WRITE_MEMORY_BARRIER() \
+ __asm__ __volatile__("membar #StoreLoad | #StoreStore" : : : "memory")
/* Get some notion of the current stack. Need not be exactly the top
bits/local_lim.h tar.h bits/utsname.h bits/confname.h \
bits/waitflags.h bits/waitstatus.h sys/unistd.h sched.h \
bits/sched.h re_comp.h wait.h bits/environments.h cpio.h \
- sys/sysmacros.h
+ sys/sysmacros.h spawn.h
distribute := confstr.h TESTS TESTS2C.sed testcases.h \
PTESTS PTESTS2C.sed ptestcases.h \
- globtest.c globtest.sh wordexp-tst.sh annexc.c fnmatch_loop.c
+ globtest.c globtest.sh wordexp-tst.sh annexc.c fnmatch_loop.c \
+ spawn_int.h
routines := \
uname \
sched_setp sched_getp sched_sets sched_gets sched_yield sched_primax \
sched_primin sched_rr_gi \
getaddrinfo gai_strerror wordexp \
- pread pwrite pread64 pwrite64
+ pread pwrite pread64 pwrite64 \
+ spawn_faction_init spawn_faction_destroy spawn_faction_addclose \
+ spawn_faction_addopen spawn_faction_adddup2 \
+ spawnattr_init spawnattr_destroy \
+ spawnattr_getdefault spawnattr_setdefault \
+ spawnattr_getflags spawnattr_setflags \
+ spawnattr_getpgroup spawnattr_setpgroup spawn spawnp spawni
include ../Makeconfig
# For the cancelation wrappers.
__libc_pread; __libc_pread64; __libc_pwrite; __libc_pwrite64;
}
+ GLIBC_2.2 {
+ # p*
+ posix_spawn_file_actions_init; posix_spawn_file_actions_destroy;
+ posix_spawn_file_actions_addclose; posix_spawn_file_actions_addopen;
+ posix_spawn_file_actions_adddup2;
+ posix_spawnattr_init; posix_spawnattr_destroy;
+ posix_spawnattr_getdefault; posix_spawnattr_setdefault;
+ posix_spawnattr_getflags; posix_spawnattr_setflags;
+ posix_spawnattr_getpgroup; posix_spawnattr_setpgroup;
+ posix_spawnattr_setsigmask; posix_spawnattr_getsigmask;
+ posix_spawn; posix_spawnp;
+ }
}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include "spawn_int.h"
+
+/* Spawn a new process executing PATH with the attributes describes in *ATTRP.
+ Before running the process perform the actions described in FILE-ACTIONS. */
+int
+posix_spawn (pid_t *pid, const char *path,
+ const posix_spawn_file_actions_t *file_actions,
+ const posix_spawnattr_t *attrp, char *const argv[],
+ char *const envp[])
+{
+ return __spawni (pid, path, file_actions, attrp, argv, envp, 0);
+}
--- /dev/null
+/* Definitions for POSIX spawn interface.
+ Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef _SPAWN_H
+#define _SPAWN_H 1
+
+#include <features.h>
+#include <sched.h>
+#include <signal.h>
+#include <sys/types.h>
+
+
+/* Data structure to contain attributes for thread creation. */
+typedef struct
+{
+ short int __flags;
+ pid_t __pgrp;
+ sigset_t __sd;
+ sigset_t __ss;
+ struct sched_param __sp;
+ int __policy;
+ int __pad[16];
+} posix_spawnattr_t;
+
+
+/* Data structure to contain information about the actions to be
+ performed in the new process with respect to file descriptors. */
+typedef struct
+{
+ int __allocated;
+ int __used;
+ struct __spawn_action *__actions;
+ int __pad[16];
+} posix_spawn_file_actions_t;
+
+
+/* Flags to be set in the `posix_spawnattr_t'. */
+#define POSIX_SPAWN_RESETIDS 0x01
+#define POSIX_SPAWN_SETPGROUP 0x02
+#define POSIX_SPAWN_SETSIGDEF 0x04
+#define POSIX_SPAWN_SETSIGMASK 0x08
+#define POSIX_SPAWN_SETSCHEDPARAM 0x10
+#define POSIX_SPAWN_SETSCHEDULER 0x20
+
+
+__BEGIN_DECLS
+
+/* Spawn a new process executing PATH with the attributes describes in *ATTRP.
+ Before running the process perform the actions described in FILE-ACTIONS. */
+extern int posix_spawn (pid_t *__pid, __const char *__path,
+ __const posix_spawn_file_actions_t *__file_actions,
+ __const posix_spawnattr_t *__attrp,
+ char *__const argv[], char *__const envp[]) __THROW;
+
+/* Similar to `posix_spawn' but search for FILE in the PATH. */
+extern int posix_spawnp (pid_t *__pid, __const char *__file,
+ __const posix_spawn_file_actions_t *__file_actions,
+ __const posix_spawnattr_t *__attrp,
+ char *__const argv[], char *__const envp[]) __THROW;
+
+
+/* Initialize data structure with attributes for `spawn' to default values. */
+extern int posix_spawnattr_init (posix_spawnattr_t *__attr) __THROW;
+
+/* Free resources associated with ATTR. */
+extern int posix_spawnattr_destroy (posix_spawnattr_t *__attr) __THROW;
+
+/* Store signal mask for signals with default handling from ATTR in
+ SIGDEFAULT. */
+extern int posix_spawnattr_getdefault (__const posix_spawnattr_t *__attr,
+ sigset_t *__sigdefault) __THROW;
+
+/* Set signal mask for signals with default handling in ATTR to SIGDEFAULT. */
+extern int posix_spawnattr_setdefault (posix_spawnattr_t *__attr,
+ __const sigset_t *__sigdefault) __THROW;
+
+/* Store signal mask for the new process from ATTR in SIGMASK. */
+extern int posix_spawnattr_getsigmask (__const posix_spawnattr_t *__attr,
+ sigset_t *__sigmask) __THROW;
+
+/* Set signal mask for the new process in ATTR to SIGMASK. */
+extern int posix_spawnattr_setsigmask (posix_spawnattr_t *__attr,
+ __const sigset_t *__sigmask) __THROW;
+
+/* Get flag word from the attribute structure. */
+extern int posix_spawnattr_getflags (__const posix_spawnattr_t *__attr,
+ short int *__flags) __THROW;
+
+/* Store flags in the attribute structure. */
+extern int posix_spawnattr_setflags (posix_spawnattr_t *_attr,
+ short int __flags) __THROW;
+
+/* Get process group ID from the attribute structure. */
+extern int posix_spawnattr_getpgroup (__const posix_spawnattr_t *__attr,
+ pid_t *__pgroup) __THROW;
+
+/* Store process group ID in the attribute structure. */
+extern int posix_spawnattr_setpgroup (posix_spawnattr_t *__attr,
+ pid_t __pgroup) __THROW;
+
+/* Get scheduling policy from the attribute structure. */
+extern int posix_spawnattr_getschedpolicy (__const posix_spawnattr_t *__attr,
+ int *__schedpolicy) __THROW;
+
+/* Store scheduling policy in the attribute structure. */
+extern int posix_spawnattr_setschedpolicy (posix_spawnattr_t *__attr,
+ int __schedpolicy) __THROW;
+
+
+/* Initialize data structure for file attribute for `spawn' call. */
+extern int posix_spawn_file_actions_init (posix_spawn_file_actions_t *
+ __file_actions) __THROW;
+
+/* Free resources associated with FILE-ACTIONS. */
+extern int posix_spawn_file_actions_destroy (posix_spawn_file_actions_t *
+ __file_actions) __THROW;
+
+/* Add an action to FILE-ACTIONS which tells the implementation to call
+ `open' for the given file during the `spawn' call. */
+extern int posix_spawn_file_actions_addopen (posix_spawn_file_actions_t *
+ __file_actions,
+ int __fd, __const char *__path,
+ int __oflag, mode_t __mode)
+ __THROW;
+
+/* Add an action to FILE-ACTIONS which tells the implementation to call
+ `close' for the given file descriptor during the `spawn' call. */
+extern int posix_spawn_file_actions_addclose (posix_spawn_file_actions_t *
+ __file_actions, int __fd)
+ __THROW;
+
+/* Add an action to FILE-ACTIONS which tells the implementation to call
+ `dup2' for the given file descriptors during the `spawn' call. */
+extern int posix_spawn_file_actions_adddup2 (posix_spawn_file_actions_t *
+ __file_actions,
+ int __fd, int __newfd) __THROW;
+
+__END_DECLS
+
+#endif /* spawn.h */
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <spawn.h>
+#include <unistd.h>
+
+#include "spawn_int.h"
+
+/* Add an action to FILE-ACTIONS which tells the implementation to call
+ `close' for the given file descriptor during the `spawn' call. */
+int
+posix_spawn_file_actions_addclose (posix_spawn_file_actions_t *file_actions,
+ int fd)
+{
+ int maxfd = sysconf (_SC_OPEN_MAX);
+ struct __spawn_action *rec;
+
+ /* Test for the validity of the file descriptor. */
+ if (fd < 0 || fd >= maxfd)
+ return EBADF;
+
+ /* Allocate more memory of needed. */
+ if (file_actions->__used == file_actions->__allocated
+ && __posix_spawn_file_actions_realloc (file_actions) != 0)
+ /* THis can only mean we ran out of memory. */
+ return ENOMEM;
+
+ /* Add the new value. */
+ rec = &file_actions->__actions[file_actions->__allocated];
+ rec->tag = spawn_do_close;
+ rec->action.open_action.fd = fd;
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <spawn.h>
+#include <unistd.h>
+
+#include "spawn_int.h"
+
+/* Add an action to FILE-ACTIONS which tells the implementation to call
+ `dup2' for the given file descriptors during the `spawn' call. */
+int
+posix_spawn_file_actions_adddup2 (posix_spawn_file_actions_t *file_actions,
+ int fd, int newfd)
+{
+ int maxfd = sysconf (_SC_OPEN_MAX);
+ struct __spawn_action *rec;
+
+ /* Test for the validity of the file descriptor. */
+ if (fd < 0 || newfd < 0 || fd >= maxfd || newfd >= maxfd)
+ return EBADF;
+
+ /* Allocate more memory of needed. */
+ if (file_actions->__used == file_actions->__allocated
+ && __posix_spawn_file_actions_realloc (file_actions) != 0)
+ /* THis can only mean we ran out of memory. */
+ return ENOMEM;
+
+ /* Add the new value. */
+ rec = &file_actions->__actions[file_actions->__allocated];
+ rec->tag = spawn_do_dup2;
+ rec->action.dup2_action.fd = fd;
+ rec->action.dup2_action.newfd = newfd;
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <spawn.h>
+#include <unistd.h>
+
+#include "spawn_int.h"
+
+/* Add an action to FILE-ACTIONS which tells the implementation to call
+ `open' for the given file during the `spawn' call. */
+int
+posix_spawn_file_actions_addopen (posix_spawn_file_actions_t *file_actions,
+ int fd, const char *path, int oflag,
+ mode_t mode)
+{
+ int maxfd = sysconf (_SC_OPEN_MAX);
+ struct __spawn_action *rec;
+
+ /* Test for the validity of the file descriptor. */
+ if (fd < 0 || fd >= maxfd)
+ return EBADF;
+
+ /* Allocate more memory of needed. */
+ if (file_actions->__used == file_actions->__allocated
+ && __posix_spawn_file_actions_realloc (file_actions) != 0)
+ /* THis can only mean we ran out of memory. */
+ return ENOMEM;
+
+ /* Add the new value. */
+ rec = &file_actions->__actions[file_actions->__allocated];
+ rec->tag = spawn_do_open;
+ rec->action.open_action.fd = fd;
+ rec->action.open_action.path = path;
+ rec->action.open_action.oflag = oflag;
+ rec->action.open_action.mode = mode;
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include <stdlib.h>
+
+/* Initialize data structure for file attribute for `spawn' call. */
+int
+posix_spawn_file_actions_destroy (posix_spawn_file_actions_t *file_actions)
+{
+ /* Free the memory allocated. */
+ free (file_actions->__actions);
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <spawn.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+/* Function used to increase the size of the allocated array. This
+ function is called from the `add'-functions. */
+int
+__posix_spawn_file_actions_realloc (posix_spawn_file_actions_t *file_actions)
+{
+ void *newmem = realloc (file_actions->__actions,
+ file_actions->__allocated += 8);
+
+ if (newmem == NULL)
+ {
+ /* Not enough memory. */
+ file_actions->__allocated -= 8;
+ return ENOMEM;
+ }
+
+ file_actions->__actions = (struct __spawn_action *) newmem;
+
+ return 0;
+}
+
+
+/* Initialize data structure for file attribute for `spawn' call. */
+int
+posix_spawn_file_actions_init (posix_spawn_file_actions_t *file_actions)
+{
+ /* Simply clear all the elements. */
+ memset (file_actions, '\0', sizeof (*file_actions));
+ return 0;
+}
--- /dev/null
+/* Data structure to contain the action information. */
+struct __spawn_action
+{
+ enum
+ {
+ spawn_do_close,
+ spawn_do_dup2,
+ spawn_do_open
+ } tag;
+
+ union
+ {
+ struct
+ {
+ int fd;
+ } close_action;
+ struct
+ {
+ int fd;
+ int newfd;
+ } dup2_action;
+ struct
+ {
+ int fd;
+ const char *path;
+ int oflag;
+ mode_t mode;
+ } open_action;
+ } action;
+};
+
+extern int __posix_spawn_file_actions_realloc (posix_spawn_file_actions_t *
+ file_actions);
+
+extern int __spawni (pid_t *pid, const char *path,
+ const posix_spawn_file_actions_t *file_actions,
+ const posix_spawnattr_t *attrp, char *const argv[],
+ char *const envp[], int use_path);
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+
+/* Initialize data structure for file attribute for `spawn' call. */
+int
+posix_spawnattr_destroy (posix_spawnattr_t *attr)
+{
+ /* Nothing to do in the moment. */
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include <string.h>
+
+/* Store signal mask for signals with default handling from ATTR in
+ SIGDEFAULT. */
+int
+posix_spawnattr_getdefault (const posix_spawnattr_t *attr,
+ sigset_t *sigdefault)
+{
+ /* Copy the sigset_t data to the user buffer. */
+ memcpy (sigdefault, &attr->__sd, sizeof (sigset_t));
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include <string.h>
+
+/* Get flag word from the attribute structure. */
+int
+posix_spawnattr_getflags (const posix_spawnattr_t *attr, short int *flags)
+{
+ /* Copy the flag word. */
+ *flags = attr->__flags;
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include <string.h>
+
+/* Get process group ID from the attribute structure. */
+int
+posix_spawnattr_getpgroup (const posix_spawnattr_t *attr, pid_t *pgroup)
+{
+ /* Copy the process group ID. */
+ *pgroup = attr->__pgrp;
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include <string.h>
+
+/* Get scheduling parameters from the attribute structure. */
+int
+posix_spawnattr_getschedparam (const posix_spawnattr_t *attr,
+ struct sched_param *schedparam)
+{
+ /* Copy the scheduling parameters. */
+ memcpy (schedparam, &attr->__sp, sizeof (*attr));
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include <string.h>
+
+/* Get scheduling policy from the attribute structure. */
+int
+posix_spawnattr_getschedpolicy (const posix_spawnattr_t *attr,
+ int *schedpolicy)
+{
+ /* Copy the scheduling policy. */
+ *schedpolicy = attr->__policy;
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include <string.h>
+
+/* Store signal mask for the new process from ATTR in SIGMASK. */
+int
+posix_spawnattr_getsigmask (const posix_spawnattr_t *attr,
+ sigset_t *sigmask)
+{
+ /* Copy the sigset_t data to the user buffer. */
+ memcpy (sigmask, &attr->__ss, sizeof (sigset_t));
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include <string.h>
+
+/* Initialize data structure for file attribute for `spawn' call. */
+int
+posix_spawnattr_init (posix_spawnattr_t *attr)
+{
+ /* All elements have to be initialized to the default values which
+ is generally zero. */
+ memset (attr, '\0', sizeof (*attr));
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include <string.h>
+
+/* Set signal mask for signals with default handling in ATTR to SIGDEFAULT. */
+int
+posix_spawnattr_setdefault (posix_spawnattr_t *attr,
+ const sigset_t *sigdefault)
+{
+ /* Copy the sigset_t data to the user buffer. */
+ memcpy (&attr->__sd, sigdefault, sizeof (sigset_t));
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include <string.h>
+
+/* Store flags in the attribute structure. */
+int
+posix_spawnattr_setflags (posix_spawnattr_t *attr, short int flags)
+{
+ /* Store the flag word. */
+ attr->__flags = flags;
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include <string.h>
+
+/* Store process group ID in the attribute structure. */
+int
+posix_spawnattr_setpgroup (posix_spawnattr_t *attr, pid_t pgroup)
+{
+ /* Store the process group ID. */
+ attr->__pgrp = pgroup;
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include <string.h>
+
+/* Store scheduling parameters in the attribute structure. */
+int
+posix_spawnattr_setschedparam (posix_spawnattr_t *attr,
+ const struct shed_param *schedparam)
+{
+ /* Store the flag word. */
+ attr->__flags = flags;
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <spawn.h>
+
+/* Store scheduling policy in the attribute structure. */
+int
+posix_spawnattr_setschedpolicy (posix_spawnattr_t *attr, int schedpolicy)
+{
+ if (schedpolicy != SCHED_OTHER && schedpolicy != SCHED_FIFO
+ && schedpolicy != SCHED_RR)
+ return EINVAL;
+
+ /* Store the policy. */
+ attr->__policy = schedpolicy;
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include <string.h>
+
+/* Set signal mask for the new process in ATTR to SIGMASK. */
+int
+posix_spawnattr_setsigmask (posix_spawnattr_t *attr,
+ const sigset_t *sigmask)
+{
+ /* Copy the sigset_t data to the user buffer. */
+ memcpy (&attr->__ss, sigdefault, sizeof (sigset_t));
+
+ return 0;
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <spawn.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "spawn_int.h"
+
+
+/* The Unix standard contains a long explanation of the way to signal
+ an error after the fork() was successful. Since no new wait status
+ was wanted there is no way to signal an error using one of the
+ available methods. The committee chose to signal an error by a
+ normal program exit with the exit code 127. */
+#define SPAWN_ERROR 127
+
+
+/* The file is accessible but it is not an executable file. Invoke
+ the shell to interpret it as a script. */
+static void
+internal_function
+script_execute (const char *file, char *const argv[], char *const envp[])
+{
+ /* Count the arguments. */
+ int argc = 0;
+ while (argv[argc++])
+ ;
+
+ /* Construct an argument list for the shell. */
+ {
+ char *new_argv[argc + 1];
+ new_argv[0] = (char *) _PATH_BSHELL;
+ new_argv[1] = (char *) file;
+ while (argc > 1)
+ {
+ new_argv[argc] = argv[argc - 1];
+ --argc;
+ }
+
+ /* Execute the shell. */
+ __execve (new_argv[0], new_argv, envp);
+ }
+}
+
+
+/* Spawn a new process executing PATH with the attributes describes in *ATTRP.
+ Before running the process perform the actions described in FILE-ACTIONS. */
+int
+__spawni (pid_t *pid, const char *file,
+ const posix_spawn_file_actions_t *file_actions,
+ const posix_spawnattr_t *attrp, char *const argv[],
+ char *const envp[], int use_path)
+{
+ pid_t new_pid;
+ char *path, *p, *name;
+ size_t len;
+ size_t pathlen;
+ short int flags;
+
+ /* Generate the new process. */
+ new_pid = fork ();
+ if (new_pid != 0)
+ {
+ if (new_pid < 0)
+ return errno;
+
+ /* The call was successful. Store the PID if necessary. */
+ if (pid != NULL)
+ *pid = new_pid;
+
+ return 0;
+ }
+
+ /* Do this once. */
+ flags = attrp == NULL ? 0 : attrp->__flags;
+
+ /* Set signal mask. */
+ if ((flags & POSIX_SPAWN_SETSIGMASK) != 0
+ && __sigprocmask (SIG_SETMASK, &attrp->__ss, NULL) != 0)
+ _exit (SPAWN_ERROR);
+
+ /* Set signal default action. */
+ if ((flags & POSIX_SPAWN_SETSIGDEF) != 0)
+ {
+ /* We have to iterate over all signals. This could possibly be
+ done better but it requires system specific solutions since
+ the sigset_t data type can be very different on different
+ architectures. */
+ int sig;
+ struct sigaction sa;
+
+ memset (&sa, '\0', sizeof (sa));
+ sa.sa_handler = SIG_DFL;
+
+ for (sig = 1; sig >= _NSIG; ++sig)
+ if (sigismember (&attrp->__sd, sig) != 0
+ && __sigaction (sig, &sa, NULL) != 0)
+ _exit (SPAWN_ERROR);
+
+ }
+
+#ifdef _POSIX_PRIORITY_SCHEDULING
+ /* Set the scheduling algorithm and parameters. */
+ if ((flags & (POSIX_SPAWN_SETSCHEDPARAM | POSIX_SPAWN_SETSCHEDULER))
+ == POSIX_SPAWN_SETSCHEDPARAM)
+ {
+ if (__sched_setparam (0, &attrp->__sp) == -1)
+ _exit (SPAWN_ERROR);
+ }
+ else if ((flags & POSIX_SPAWN_SETSCHEDULER) != 0)
+ {
+ if (__sched_setscheduler (0, attrp->__policy,
+ (flags & POSIX_SPAWN_SETSCHEDPARAM) != 0
+ ? &attrp->__sp : NULL) == -1)
+ _exit (SPAWN_ERROR);
+ }
+#endif
+
+ /* Set the process group ID. */
+ if ((flags & POSIX_SPAWN_SETPGROUP) != 0
+ && __setpgid (0, attrp->__pgrp) != 0)
+ _exit (SPAWN_ERROR);
+
+ /* Set the effective user and group IDs. */
+ if ((flags & POSIX_SPAWN_RESETIDS) != 0
+ && (seteuid (__getuid ()) != 0 || setegid (__getgid ()) != 0))
+ _exit (SPAWN_ERROR);
+
+ /* Execute the file actions. */
+ if (file_actions != NULL)
+ {
+ int cnt;
+
+ for (cnt = 0; cnt < file_actions->__used; ++cnt)
+ {
+ struct __spawn_action *action = &file_actions->__actions[cnt];
+
+ switch (action->tag)
+ {
+ case spawn_do_close:
+ if (close (action->action.close_action.fd) != 0)
+ /* Signal the error. */
+ _exit (SPAWN_ERROR);
+ break;
+
+ case spawn_do_open:
+ {
+ int new_fd = open (action->action.open_action.path,
+ action->action.open_action.oflag,
+ action->action.open_action.mode);
+
+ if (new_fd == -1)
+ /* The `open' call failed. */
+ _exit (SPAWN_ERROR);
+
+ /* Make sure the desired file descriptor is used. */
+ if (new_fd != action->action.open_action.fd)
+ {
+ if (__dup2 (new_fd, action->action.open_action.fd) != 0)
+ /* The `dup2' call failed. */
+ _exit (SPAWN_ERROR);
+
+ if (close (new_fd) != 0)
+ /* The `close' call failed. */
+ _exit (SPAWN_ERROR);
+ }
+ }
+ break;
+
+ case spawn_do_dup2:
+ if (__dup2 (action->action.dup2_action.fd,
+ action->action.dup2_action.newfd) != 0)
+ /* The `dup2' call failed. */
+ _exit (SPAWN_ERROR);
+ break;
+ }
+ }
+ }
+
+ if (! use_path || strchr (file, '/') != NULL)
+ {
+ /* The FILE parameter is actually a path. */
+ __execve (file, argv, envp);
+
+ if (errno == ENOEXEC)
+ script_execute (file, argv, envp);
+
+ /* Oh, oh. `execve' returns. This is bad. */
+ _exit (SPAWN_ERROR);
+ }
+
+ /* We have to search for FILE on the path. */
+ path = getenv ("PATH");
+ if (path == NULL)
+ {
+ /* There is no `PATH' in the environment.
+ The default search path is the current directory
+ followed by the path `confstr' returns for `_CS_PATH'. */
+ len = confstr (_CS_PATH, (char *) NULL, 0);
+ path = (char *) __alloca (1 + len);
+ path[0] = ':';
+ (void) confstr (_CS_PATH, path + 1, len);
+ }
+
+ len = strlen (file) + 1;
+ pathlen = strlen (path);
+ name = __alloca (pathlen + len + 1);
+ /* Copy the file name at the top. */
+ name = (char *) memcpy (name + pathlen + 1, file, len);
+ /* And add the slash. */
+ *--name = '/';
+
+ p = path;
+ do
+ {
+ char *startp;
+
+ path = p;
+ p = __strchrnul (path, ':');
+
+ if (p == path)
+ /* Two adjacent colons, or a colon at the beginning or the end
+ of `PATH' means to search the current directory. */
+ startp = name + 1;
+ else
+ startp = (char *) memcpy (name - (p - path), path, p - path);
+
+ /* Try to execute this name. If it works, execv will not return. */
+ __execve (startp, argv, envp);
+
+ if (errno == ENOEXEC)
+ script_execute (startp, argv, envp);
+
+ switch (errno)
+ {
+ case EACCES:
+ case ENOENT:
+ case ESTALE:
+ case ENOTDIR:
+ /* Those errors indicate the file is missing or not executable
+ by us, in which case we want to just try the next path
+ directory. */
+ break;
+
+ default:
+ /* Some other error means we found an executable file, but
+ something went wrong executing it; return the error to our
+ caller. */
+ _exit (SPAWN_ERROR);
+ }
+ }
+ while (*p++ != '\0');
+
+ /* Return with an error. */
+ _exit (SPAWN_ERROR);
+}
--- /dev/null
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <spawn.h>
+#include "spawn_int.h"
+
+/* Spawn a new process executing FILE with the attributes describes in *ATTRP.
+ Before running the process perform the actions described in FILE-ACTIONS. */
+int
+posix_spawnp (pid_t *pid, const char *file,
+ const posix_spawn_file_actions_t *file_actions,
+ const posix_spawnattr_t *attrp, char *const argv[],
+ char *const envp[])
+{
+ return __spawni (pid, file, file_actions, attrp, argv, envp, 1);
+}
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