int fdset_new_listen_fds(FDSet **_s, bool unset) { int n, fd, r; FDSet *s; assert(_s); /* Creates an fdset and fills in all passed file descriptors */ s = fdset_new(); if (!s) { r = -ENOMEM; goto fail; } n = sd_listen_fds(unset); for (fd = SD_LISTEN_FDS_START; fd < SD_LISTEN_FDS_START + n; fd ++) { r = fdset_put(s, fd); if (r < 0) goto fail; } *_s = s; return 0; fail: if (s) set_free(MAKE_SET(s)); return r; }
int fdset_iterate(FDSet *s, Iterator *i) { void *p; if (!set_iterate(MAKE_SET(s), i, &p)) return -ENOENT; return PTR_TO_FD(p); }
int fdset_steal_first(FDSet *fds) { void *p; p = set_steal_first(MAKE_SET(fds)); if (!p) return -ENOENT; return PTR_TO_FD(p); }
int fdset_new_fill(FDSet **_s) { DIR *d; struct dirent *de; int r = 0; FDSet *s; assert(_s); /* Creates an fdset and fills in all currently open file * descriptors. */ d = opendir("/proc/self/fd"); if (!d) return -errno; s = fdset_new(); if (!s) { r = -ENOMEM; goto finish; } while ((de = readdir(d))) { int fd = -1; if (ignore_file(de->d_name)) continue; r = safe_atoi(de->d_name, &fd); if (r < 0) goto finish; if (fd < 3) continue; if (fd == dirfd(d)) continue; r = fdset_put(s, fd); if (r < 0) goto finish; } r = 0; *_s = s; s = NULL; finish: closedir(d); /* We won't close the fds here! */ if (s) set_free(MAKE_SET(s)); return r; }
void fdset_free(FDSet *s) { void *p; while ((p = set_steal_first(MAKE_SET(s)))) { /* Valgrind's fd might have ended up in this set here, * due to fdset_new_fill(). We'll ignore all failures * here, so that the EBADFD that valgrind will return * us on close() doesn't influence us */ /* When reloading duplicates of the private bus * connection fds and suchlike are closed here, which * has no effect at all, since they are only * duplicates. So don't be surprised about these log * messages. */ log_debug("Closing left-over fd %i", PTR_TO_FD(p)); close_nointr(PTR_TO_FD(p)); } set_free(MAKE_SET(s)); }
int fdset_cloexec(FDSet *fds, bool b) { Iterator i; void *p; int r; assert(fds); SET_FOREACH(p, MAKE_SET(fds), i) { r = fd_cloexec(PTR_TO_FD(p), b); if (r < 0) return r; }
int fdset_close_others(FDSet *fds) { void *e; Iterator i; int *a; unsigned j, m; j = 0, m = fdset_size(fds); a = alloca(sizeof(int) * m); SET_FOREACH(e, MAKE_SET(fds), i) a[j++] = PTR_TO_FD(e); assert(j == m); return close_all_fds(a, j); }
int fdset_new_array(FDSet **ret, const int *fds, unsigned n_fds) { unsigned i; FDSet *s; int r; assert(ret); s = fdset_new(); if (!s) return -ENOMEM; for (i = 0; i < n_fds; i++) { r = fdset_put(s, fds[i]); if (r < 0) { set_free(MAKE_SET(s)); return r; } } *ret = s; return 0; }
int fdset_remove(FDSet *s, int fd) { assert(s); assert(fd >= 0); return set_remove(MAKE_SET(s), FD_TO_PTR(fd)) ? fd : -ENOENT; }
bool fdset_contains(FDSet *s, int fd) { assert(s); assert(fd >= 0); return !!set_get(MAKE_SET(s), FD_TO_PTR(fd)); }
int fdset_put(FDSet *s, int fd) { assert(s); assert(fd >= 0); return set_put(MAKE_SET(s), FD_TO_PTR(fd)); }
unsigned fdset_size(FDSet *fds) { return set_size(MAKE_SET(fds)); }
Set *set_new(hash_func_t hash_func, compare_func_t compare_func) { return MAKE_SET(hashmap_new(hash_func, compare_func)); }
Set* set_copy(Set *s) { return MAKE_SET(hashmap_copy(MAKE_HASHMAP(s))); }
Set *set_new(const struct hash_ops *hash_ops) { return MAKE_SET(hashmap_new(hash_ops)); }
bool fdset_isempty(FDSet *fds) { return set_isempty(MAKE_SET(fds)); }