diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | posix/spawn.h | 5 | ||||
| -rw-r--r-- | posix/spawnattr_setflags.c | 15 | ||||
| -rw-r--r-- | sysdeps/posix/spawni.c | 15 |
4 files changed, 33 insertions, 8 deletions
@@ -1,5 +1,11 @@ 2004-09-12 Ulrich Drepper <drepper@redhat.com> + * posix/spawn.h [__USE_GNU]: Define POSIX_SPAWN_USEVFORK. + * posix/spawnattr_setflags.c: Check whether any unknown bit is set + in FLAGS parameter and fail if this is the case. + * sysdeps/posix/spawni.c: Use vfork if POSIX_SPAWN_USEVFORK flag is + set. + * nscd/pwdcache.c (cache_addpw): Sync also negative results to disk. * nscd/grpcache.c (cache_addgr): Likewise. * nscd/hstcache.c (cache_addhst): Likewise. diff --git a/posix/spawn.h b/posix/spawn.h index 09b1e9f8e4..ff77fcc8f9 100644 --- a/posix/spawn.h +++ b/posix/spawn.h @@ -1,5 +1,5 @@ /* Definitions for POSIX spawn interface. - Copyright (C) 2000, 2003 Free Software Foundation, Inc. + Copyright (C) 2000, 2003, 2004 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 @@ -57,6 +57,9 @@ typedef struct #define POSIX_SPAWN_SETSIGMASK 0x08 #define POSIX_SPAWN_SETSCHEDPARAM 0x10 #define POSIX_SPAWN_SETSCHEDULER 0x20 +#ifdef __USE_GNU +# define POSIX_SPAWN_USEVFORK 0x40 +#endif __BEGIN_DECLS diff --git a/posix/spawnattr_setflags.c b/posix/spawnattr_setflags.c index 3618efab45..0c3f5d20b7 100644 --- a/posix/spawnattr_setflags.c +++ b/posix/spawnattr_setflags.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2000 Free Software Foundation, Inc. +/* Copyright (C) 2000, 2004 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 @@ -16,13 +16,26 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ +#include <errno.h> #include <spawn.h> #include <string.h> +#define ALL_FLAGS (POSIX_SPAWN_RESETIDS \ + | POSIX_SPAWN_SETPGROUP \ + | POSIX_SPAWN_SETSIGDEF \ + | POSIX_SPAWN_SETSIGMASK \ + | POSIX_SPAWN_SETSCHEDPARAM \ + | POSIX_SPAWN_SETSCHEDULER \ + | POSIX_SPAWN_USEVFORK) + /* Store flags in the attribute structure. */ int posix_spawnattr_setflags (posix_spawnattr_t *attr, short int flags) { + /* Check no invalid bits are set. */ + if (flags & ~ALL_FLAGS) + return EINVAL; + /* Store the flag word. */ attr->__flags = flags; diff --git a/sysdeps/posix/spawni.c b/sysdeps/posix/spawni.c index f65a0957a7..69106c480e 100644 --- a/sysdeps/posix/spawni.c +++ b/sysdeps/posix/spawni.c @@ -1,5 +1,5 @@ /* Guts of POSIX spawn interface. Generic POSIX.1 version. - Copyright (C) 2000,01,02, 2003 Free Software Foundation, Inc. + Copyright (C) 2000, 2001, 2002, 2003, 2004 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 @@ -76,10 +76,16 @@ __spawni (pid_t *pid, const char *file, char *path, *p, *name; size_t len; size_t pathlen; - short int flags; + + /* Do this once. */ + short int flags = attrp == NULL ? 0 : attrp->__flags; /* Generate the new process. */ - new_pid = __fork (); + if (flags & POSIX_SPAWN_USEVFORK) + new_pid = __vfork (); + else + new_pid = __fork (); + if (new_pid != 0) { if (new_pid < 0) @@ -92,9 +98,6 @@ __spawni (pid_t *pid, const char *file, 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) |