diff options
Diffstat (limited to 'posix')
| -rw-r--r-- | posix/shm-directory.c | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/posix/shm-directory.c b/posix/shm-directory.c index 47e2355..86d9fd8 100644 --- a/posix/shm-directory.c +++ b/posix/shm-directory.c @@ -23,17 +23,34 @@ #include <alloc_buffer.h> #include <shm-directory.h> #include <string.h> +#include <sys/mman.h> +#include <fcntl.h> int __shm_get_name (struct shmdir_name *result, const char *name, bool sem_prefix) { + struct alloc_buffer buffer; + size_t namelen; + + buffer = alloc_buffer_create (result->name, sizeof (result->name)); + alloc_buffer_copy_bytes (&buffer, SHMDIR, strlen (SHMDIR)); + +#if defined (SHM_ANON) && defined (O_TMPFILE) + if (name == SHM_ANON) + { + /* For SHM_ANON, we want shm_open () to pass O_TMPFILE to open (), + with SHMDIR itself as the path. So, leave it at that. */ + alloc_buffer_add_byte (&buffer, 0); + if (alloc_buffer_has_failed (&buffer)) + return -1; + return 0; + } +#endif + while (name[0] == '/') ++name; - size_t namelen = strlen (name); + namelen = strlen (name); - struct alloc_buffer buffer - = alloc_buffer_create (result->name, sizeof (result->name)); - alloc_buffer_copy_bytes (&buffer, SHMDIR, strlen (SHMDIR)); if (sem_prefix) alloc_buffer_copy_bytes (&buffer, "sem.", strlen ("sem.")); alloc_buffer_copy_bytes (&buffer, name, namelen + 1); |