shmem/unix/shm.c

51 static const char *make_shm_open_safe_name(const char *filename,
57     if (filename == NULL) {
61     flen = strlen(filename);
62     h1 = (apr_hashfunc_default(filename, &flen) & 0xffffffff);
63     h2 = (rshash(filename) & 0xffffffff);
70 static key_t our_ftok(const char *filename)
74     apr_ssize_t slen = strlen(filename);
75     return ftok(filename,
76                 (int)apr_hashfunc_default(filename, &slen));
85     if (m->filename == NULL) {
107         if (access(m->filename, F_OK)) {
111             return apr_file_remove(m->filename, m->pool);
117         if (shm_unlink(make_shm_open_safe_name(m->filename, m->pool)) == -1 && errno != ENOENT) {
131         if (access(m->filename, F_OK)) {
135             return apr_file_remove(m->filename, m->pool);
145                                          const char *filename,
169     if (filename == NULL) {
176         new_m->filename = NULL;
233         new_m->filename = NULL;
278         new_m->filename = apr_pstrdup(pool, filename);
280         const char *shm_name = make_shm_open_safe_name(filename, pool);
291         status = apr_file_open(&file, filename,
301             apr_file_remove(new_m->filename, new_m->pool);
308             apr_file_remove(new_m->filename, new_m->pool);
365         status = apr_file_open(&file, filename,
374         shmkey = our_ftok(filename);
429                                             const char *filename,
433     return apr_shm_create(m, reqsize, filename, p);
436 APR_DECLARE(apr_status_t) apr_shm_remove(const char *filename,
447     return apr_file_remove(filename, pool);
449     const char *shm_name = make_shm_open_safe_name(filename, pool);
456     status = apr_file_open(&file, filename, APR_FOPEN_WRITE,
464     shmkey = our_ftok(filename);
481     return apr_file_remove(filename, pool);
486     apr_file_remove(filename, pool);
504     if (m->filename == NULL) {
526                                          const char *filename,
529     if (filename == NULL) {
531          * the filename. */
544         new_m->filename = apr_pstrdup(pool, filename);
546         const char *shm_name = make_shm_open_safe_name(filename, pool);
562         status = apr_file_open(&file, filename,
586             apr_file_remove(new_m->filename, new_m->pool);
618         status = apr_file_open(&file, filename,
635         new_m->filename = apr_pstrdup(pool, filename);
637         shmkey = our_ftok(filename);
662                                             const char *filename,
666     return apr_shm_attach(m, filename, pool);