diff options
Diffstat (limited to 'nptl/sem_init.c')
| -rw-r--r-- | nptl/sem_init.c | 47 |
1 files changed, 40 insertions, 7 deletions
diff --git a/nptl/sem_init.c b/nptl/sem_init.c index 8709911ac3..e29d900588 100644 --- a/nptl/sem_init.c +++ b/nptl/sem_init.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2002 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -22,6 +22,7 @@ #include <lowlevellock.h> #include <shlib-compat.h> #include "semaphoreP.h" +#include <kernel-features.h> int @@ -38,18 +39,50 @@ __new_sem_init (sem, pshared, value) } /* Map to the internal type. */ - struct sem *isem = (struct sem *) sem; + struct new_sem *isem = (struct new_sem *) sem; - /* Use the value the user provided. */ - isem->count = value; + /* Use the values the user provided. */ + isem->value = value; +#ifdef __ASSUME_PRIVATE_FUTEX + isem->private = pshared ? 0 : FUTEX_PRIVATE_FLAG; +#else + isem->private = pshared ? 0 : THREAD_GETMEM (THREAD_SELF, + header.private_futex); +#endif - /* We can completely ignore the PSHARED parameter since inter-process - use needs no special preparation. */ + isem->nwaiters = 0; return 0; } versioned_symbol (libpthread, __new_sem_init, sem_init, GLIBC_2_1); + + + #if SHLIB_COMPAT(libpthread, GLIBC_2_0, GLIBC_2_1) -strong_alias (__new_sem_init, __old_sem_init) +int +attribute_compat_text_section +__old_sem_init (sem, pshared, value) + sem_t *sem; + int pshared; + unsigned int value; +{ + /* Parameter sanity check. */ + if (__builtin_expect (value > SEM_VALUE_MAX, 0)) + { + __set_errno (EINVAL); + return -1; + } + + /* Map to the internal type. */ + struct old_sem *isem = (struct old_sem *) sem; + + /* Use the value the user provided. */ + isem->value = value; + + /* We cannot store the PSHARED attribute. So we always use the + operations needed for shared semaphores. */ + + return 0; +} compat_symbol (libpthread, __old_sem_init, sem_init, GLIBC_2_0); #endif |