diff options
Diffstat (limited to 'sysdeps/pthread/sem_open.c')
| -rw-r--r-- | sysdeps/pthread/sem_open.c | 40 |
1 files changed, 27 insertions, 13 deletions
diff --git a/sysdeps/pthread/sem_open.c b/sysdeps/pthread/sem_open.c index 0265abc45b..770ab17cdb 100644 --- a/sysdeps/pthread/sem_open.c +++ b/sysdeps/pthread/sem_open.c @@ -27,8 +27,14 @@ #include <futex-internal.h> #include <libc-lock.h> +#if !PTHREAD_IN_LIBC +/* The private names are not exported from libc. */ +# define __link link +# define __unlink unlink +#endif + sem_t * -sem_open (const char *name, int oflag, ...) +__sem_open (const char *name, int oflag, ...) { int fd; sem_t *result; @@ -59,8 +65,8 @@ sem_open (const char *name, int oflag, ...) if ((oflag & O_CREAT) == 0 || (oflag & O_EXCL) == 0) { try_again: - fd = open (dirname.name, - (oflag & ~(O_CREAT|O_ACCMODE)) | O_NOFOLLOW | O_RDWR); + fd = __open (dirname.name, + (oflag & ~(O_CREAT|O_ACCMODE)) | O_NOFOLLOW | O_RDWR); if (fd == -1) { @@ -127,7 +133,7 @@ sem_open (const char *name, int oflag, ...) } /* Open the file. Make sure we do not overwrite anything. */ - fd = open (tmpfname, O_RDWR | O_CREAT | O_EXCL, mode); + fd = __open (tmpfname, O_RDWR | O_CREAT | O_EXCL, mode); if (fd == -1) { if (errno == EEXIST) @@ -154,15 +160,15 @@ sem_open (const char *name, int oflag, ...) if (TEMP_FAILURE_RETRY (write (fd, &sem.initsem, sizeof (sem_t))) == sizeof (sem_t) /* Map the sem_t structure from the file. */ - && (result = (sem_t *) mmap (NULL, sizeof (sem_t), - PROT_READ | PROT_WRITE, MAP_SHARED, - fd, 0)) != MAP_FAILED) + && (result = (sem_t *) __mmap (NULL, sizeof (sem_t), + PROT_READ | PROT_WRITE, MAP_SHARED, + fd, 0)) != MAP_FAILED) { /* Create the file. Don't overwrite an existing file. */ - if (link (tmpfname, dirname.name) != 0) + if (__link (tmpfname, dirname.name) != 0) { /* Undo the mapping. */ - (void) munmap (result, sizeof (sem_t)); + __munmap (result, sizeof (sem_t)); /* Reinitialize 'result'. */ result = SEM_FAILED; @@ -172,10 +178,10 @@ sem_open (const char *name, int oflag, ...) if ((oflag & O_EXCL) == 0 && errno == EEXIST) { /* Remove the file. */ - (void) unlink (tmpfname); + __unlink (tmpfname); /* Close the file. */ - close (fd); + __close (fd); goto try_again; } @@ -189,7 +195,7 @@ sem_open (const char *name, int oflag, ...) /* Now remove the temporary name. This should never fail. If it fails we leak a file name. Better fix the kernel. */ - (void) unlink (tmpfname); + __unlink (tmpfname); } /* Map the mmap error to the error we need. */ @@ -201,7 +207,7 @@ sem_open (const char *name, int oflag, ...) { /* Do not disturb errno. */ int save = errno; - close (fd); + __close (fd); errno = save; } @@ -212,3 +218,11 @@ out: return result; } +#if PTHREAD_IN_LIBC +versioned_symbol (libc, __sem_open, sem_open, GLIBC_2_34); +# if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_1_1, GLIBC_2_34) +compat_symbol (libpthread, __sem_open, sem_open, GLIBC_2_1_1); +# endif +#else /* !PTHREAD_IN_LIBC */ +strong_alias (__sem_open, sem_open) +#endif |