diff options
author | Andy Wingo <wingo@pobox.com> | 2015-04-19 12:47:46 +0200 |
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committer | Andy Wingo <wingo@pobox.com> | 2015-04-19 12:47:46 +0200 |
commit | f48dd74a8d39b6074f820f904953f5cece03b9b0 (patch) | |
tree | 815d31028f64b58e4775110c0cadb0d2347b09d6 /src/libsystemd/sd-hwdb | |
parent | 796f9ac2ba3731fec49fd684b1adc02cfbe6f11b (diff) |
Rename more things to elogind
Diffstat (limited to 'src/libsystemd/sd-hwdb')
l--------- | src/libsystemd/sd-hwdb/Makefile | 1 | ||||
-rw-r--r-- | src/libsystemd/sd-hwdb/hwdb-internal.h | 70 | ||||
-rw-r--r-- | src/libsystemd/sd-hwdb/hwdb-util.h | 31 | ||||
-rw-r--r-- | src/libsystemd/sd-hwdb/sd-hwdb.c | 469 |
4 files changed, 0 insertions, 571 deletions
diff --git a/src/libsystemd/sd-hwdb/Makefile b/src/libsystemd/sd-hwdb/Makefile deleted file mode 120000 index 94aaae2c4d..0000000000 --- a/src/libsystemd/sd-hwdb/Makefile +++ /dev/null @@ -1 +0,0 @@ -../../Makefile
\ No newline at end of file diff --git a/src/libsystemd/sd-hwdb/hwdb-internal.h b/src/libsystemd/sd-hwdb/hwdb-internal.h deleted file mode 100644 index fedccdec72..0000000000 --- a/src/libsystemd/sd-hwdb/hwdb-internal.h +++ /dev/null @@ -1,70 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2012 Kay Sievers <kay@vrfy.org> - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ -#pragma once - -#include "sparse-endian.h" - -#define HWDB_SIG { 'K', 'S', 'L', 'P', 'H', 'H', 'R', 'H' } - -/* on-disk trie objects */ -struct trie_header_f { - uint8_t signature[8]; - - /* version of tool which created the file */ - le64_t tool_version; - le64_t file_size; - - /* size of structures to allow them to grow */ - le64_t header_size; - le64_t node_size; - le64_t child_entry_size; - le64_t value_entry_size; - - /* offset of the root trie node */ - le64_t nodes_root_off; - - /* size of the nodes and string section */ - le64_t nodes_len; - le64_t strings_len; -} _packed_; - -struct trie_node_f { - /* prefix of lookup string, shared by all children */ - le64_t prefix_off; - /* size of children entry array appended to the node */ - uint8_t children_count; - uint8_t padding[7]; - /* size of value entry array appended to the node */ - le64_t values_count; -} _packed_; - -/* array of child entries, follows directly the node record */ -struct trie_child_entry_f { - /* index of the child node */ - uint8_t c; - uint8_t padding[7]; - /* offset of the child node */ - le64_t child_off; -} _packed_; - -/* array of value entries, follows directly the node record/child array */ -struct trie_value_entry_f { - le64_t key_off; - le64_t value_off; -} _packed_; diff --git a/src/libsystemd/sd-hwdb/hwdb-util.h b/src/libsystemd/sd-hwdb/hwdb-util.h deleted file mode 100644 index ee020a2942..0000000000 --- a/src/libsystemd/sd-hwdb/hwdb-util.h +++ /dev/null @@ -1,31 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2014 Tom Gundersen <teg@jklm.no> - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include "util.h" - -#include "sd-hwdb.h" - -DEFINE_TRIVIAL_CLEANUP_FUNC(sd_hwdb*, sd_hwdb_unref); -#define _cleanup_hwdb_unref_ _cleanup_(sd_hwdb_unrefp) - -bool hwdb_validate(sd_hwdb *hwdb); diff --git a/src/libsystemd/sd-hwdb/sd-hwdb.c b/src/libsystemd/sd-hwdb/sd-hwdb.c deleted file mode 100644 index 3bbf02896b..0000000000 --- a/src/libsystemd/sd-hwdb/sd-hwdb.c +++ /dev/null @@ -1,469 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2012 Kay Sievers <kay@vrfy.org> - Copyright 2008 Alan Jenkins <alan.christopher.jenkins@googlemail.com> - Copyright 2014 Tom Gundersen <teg@jklm.no> - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdio.h> -#include <errno.h> -#include <string.h> -#include <inttypes.h> -#include <stdlib.h> -#include <fnmatch.h> -#include <sys/mman.h> - -#include "sd-hwdb.h" - -#include "hashmap.h" -#include "refcnt.h" - -#include "hwdb-util.h" -#include "hwdb-internal.h" - -struct sd_hwdb { - RefCount n_ref; - int refcount; - - FILE *f; - struct stat st; - union { - struct trie_header_f *head; - const char *map; - }; - - char *modalias; - - OrderedHashmap *properties; - Iterator properties_iterator; - bool properties_modified; -}; - -struct linebuf { - char bytes[LINE_MAX]; - size_t size; - size_t len; -}; - -static void linebuf_init(struct linebuf *buf) { - buf->size = 0; - buf->len = 0; -} - -static const char *linebuf_get(struct linebuf *buf) { - if (buf->len + 1 >= sizeof(buf->bytes)) - return NULL; - buf->bytes[buf->len] = '\0'; - return buf->bytes; -} - -static bool linebuf_add(struct linebuf *buf, const char *s, size_t len) { - if (buf->len + len >= sizeof(buf->bytes)) - return false; - memcpy(buf->bytes + buf->len, s, len); - buf->len += len; - return true; -} - -static bool linebuf_add_char(struct linebuf *buf, char c) -{ - if (buf->len + 1 >= sizeof(buf->bytes)) - return false; - buf->bytes[buf->len++] = c; - return true; -} - -static void linebuf_rem(struct linebuf *buf, size_t count) { - assert(buf->len >= count); - buf->len -= count; -} - -static void linebuf_rem_char(struct linebuf *buf) { - linebuf_rem(buf, 1); -} - -static const struct trie_child_entry_f *trie_node_children(sd_hwdb *hwdb, const struct trie_node_f *node) { - return (const struct trie_child_entry_f *)((const char *)node + le64toh(hwdb->head->node_size)); -} - -static const struct trie_value_entry_f *trie_node_values(sd_hwdb *hwdb, const struct trie_node_f *node) { - const char *base = (const char *)node; - - base += le64toh(hwdb->head->node_size); - base += node->children_count * le64toh(hwdb->head->child_entry_size); - return (const struct trie_value_entry_f *)base; -} - -static const struct trie_node_f *trie_node_from_off(sd_hwdb *hwdb, le64_t off) { - return (const struct trie_node_f *)(hwdb->map + le64toh(off)); -} - -static const char *trie_string(sd_hwdb *hwdb, le64_t off) { - return hwdb->map + le64toh(off); -} - -static int trie_children_cmp_f(const void *v1, const void *v2) { - const struct trie_child_entry_f *n1 = v1; - const struct trie_child_entry_f *n2 = v2; - - return n1->c - n2->c; -} - -static const struct trie_node_f *node_lookup_f(sd_hwdb *hwdb, const struct trie_node_f *node, uint8_t c) { - struct trie_child_entry_f *child; - struct trie_child_entry_f search; - - search.c = c; - child = bsearch(&search, trie_node_children(hwdb, node), node->children_count, - le64toh(hwdb->head->child_entry_size), trie_children_cmp_f); - if (child) - return trie_node_from_off(hwdb, child->child_off); - return NULL; -} - -static int hwdb_add_property(sd_hwdb *hwdb, const char *key, const char *value) { - int r; - - assert(hwdb); - assert(key); - assert(value); - - /* - * Silently ignore all properties which do not start with a - * space; future extensions might use additional prefixes. - */ - if (key[0] != ' ') - return 0; - - key++; - - r = ordered_hashmap_ensure_allocated(&hwdb->properties, &string_hash_ops); - if (r < 0) - return r; - - r = ordered_hashmap_replace(hwdb->properties, key, (char*)value); - if (r < 0) - return r; - - hwdb->properties_modified = true; - - return 0; -} - -static int trie_fnmatch_f(sd_hwdb *hwdb, const struct trie_node_f *node, size_t p, - struct linebuf *buf, const char *search) { - size_t len; - size_t i; - const char *prefix; - int err; - - prefix = trie_string(hwdb, node->prefix_off); - len = strlen(prefix + p); - linebuf_add(buf, prefix + p, len); - - for (i = 0; i < node->children_count; i++) { - const struct trie_child_entry_f *child = &trie_node_children(hwdb, node)[i]; - - linebuf_add_char(buf, child->c); - err = trie_fnmatch_f(hwdb, trie_node_from_off(hwdb, child->child_off), 0, buf, search); - if (err < 0) - return err; - linebuf_rem_char(buf); - } - - if (le64toh(node->values_count) && fnmatch(linebuf_get(buf), search, 0) == 0) - for (i = 0; i < le64toh(node->values_count); i++) { - err = hwdb_add_property(hwdb, trie_string(hwdb, trie_node_values(hwdb, node)[i].key_off), - trie_string(hwdb, trie_node_values(hwdb, node)[i].value_off)); - if (err < 0) - return err; - } - - linebuf_rem(buf, len); - return 0; -} - -static int trie_search_f(sd_hwdb *hwdb, const char *search) { - struct linebuf buf; - const struct trie_node_f *node; - size_t i = 0; - int err; - - linebuf_init(&buf); - - node = trie_node_from_off(hwdb, hwdb->head->nodes_root_off); - while (node) { - const struct trie_node_f *child; - size_t p = 0; - - if (node->prefix_off) { - uint8_t c; - - for (; (c = trie_string(hwdb, node->prefix_off)[p]); p++) { - if (c == '*' || c == '?' || c == '[') - return trie_fnmatch_f(hwdb, node, p, &buf, search + i + p); - if (c != search[i + p]) - return 0; - } - i += p; - } - - child = node_lookup_f(hwdb, node, '*'); - if (child) { - linebuf_add_char(&buf, '*'); - err = trie_fnmatch_f(hwdb, child, 0, &buf, search + i); - if (err < 0) - return err; - linebuf_rem_char(&buf); - } - - child = node_lookup_f(hwdb, node, '?'); - if (child) { - linebuf_add_char(&buf, '?'); - err = trie_fnmatch_f(hwdb, child, 0, &buf, search + i); - if (err < 0) - return err; - linebuf_rem_char(&buf); - } - - child = node_lookup_f(hwdb, node, '['); - if (child) { - linebuf_add_char(&buf, '['); - err = trie_fnmatch_f(hwdb, child, 0, &buf, search + i); - if (err < 0) - return err; - linebuf_rem_char(&buf); - } - - if (search[i] == '\0') { - size_t n; - - for (n = 0; n < le64toh(node->values_count); n++) { - err = hwdb_add_property(hwdb, trie_string(hwdb, trie_node_values(hwdb, node)[n].key_off), - trie_string(hwdb, trie_node_values(hwdb, node)[n].value_off)); - if (err < 0) - return err; - } - return 0; - } - - child = node_lookup_f(hwdb, node, search[i]); - node = child; - i++; - } - return 0; -} - -static const char hwdb_bin_paths[] = - "/etc/systemd/hwdb/hwdb.bin\0" - "/etc/udev/hwdb.bin\0" - "/usr/lib/systemd/hwdb/hwdb.bin\0" -#ifdef HAVE_SPLIT_USR - "/lib/systemd/hwdb/hwdb.bin\0" -#endif - UDEVLIBEXECDIR "/hwdb.bin\0"; - -_public_ int sd_hwdb_new(sd_hwdb **ret) { - _cleanup_hwdb_unref_ sd_hwdb *hwdb = NULL; - const char *hwdb_bin_path; - const char sig[] = HWDB_SIG; - - assert_return(ret, -EINVAL); - - hwdb = new0(sd_hwdb, 1); - if (!hwdb) - return -ENOMEM; - - hwdb->n_ref = REFCNT_INIT; - - /* find hwdb.bin in hwdb_bin_paths */ - NULSTR_FOREACH(hwdb_bin_path, hwdb_bin_paths) { - hwdb->f = fopen(hwdb_bin_path, "re"); - if (hwdb->f) - break; - else if (errno == ENOENT) - continue; - else - return log_debug_errno(errno, "error reading %s: %m", hwdb_bin_path); - } - - if (!hwdb->f) { - log_debug("hwdb.bin does not exist, please run udevadm hwdb --update"); - return -ENOENT; - } - - if (fstat(fileno(hwdb->f), &hwdb->st) < 0 || - (size_t)hwdb->st.st_size < offsetof(struct trie_header_f, strings_len) + 8) - return log_debug_errno(errno, "error reading %s: %m", hwdb_bin_path); - - hwdb->map = mmap(0, hwdb->st.st_size, PROT_READ, MAP_SHARED, fileno(hwdb->f), 0); - if (hwdb->map == MAP_FAILED) - return log_debug_errno(errno, "error mapping %s: %m", hwdb_bin_path); - - if (memcmp(hwdb->map, sig, sizeof(hwdb->head->signature)) != 0 || - (size_t)hwdb->st.st_size != le64toh(hwdb->head->file_size)) { - log_debug("error recognizing the format of %s", hwdb_bin_path); - return -EINVAL;; - } - - log_debug("=== trie on-disk ==="); - log_debug("tool version: %"PRIu64, le64toh(hwdb->head->tool_version)); - log_debug("file size: %8"PRIi64" bytes", hwdb->st.st_size); - log_debug("header size %8"PRIu64" bytes", le64toh(hwdb->head->header_size)); - log_debug("strings %8"PRIu64" bytes", le64toh(hwdb->head->strings_len)); - log_debug("nodes %8"PRIu64" bytes", le64toh(hwdb->head->nodes_len)); - - *ret = hwdb; - hwdb = NULL; - - return 0; -} - -_public_ sd_hwdb *sd_hwdb_ref(sd_hwdb *hwdb) { - assert_return(hwdb, NULL); - - assert_se(REFCNT_INC(hwdb->n_ref) >= 2); - - return hwdb; -} - -_public_ sd_hwdb *sd_hwdb_unref(sd_hwdb *hwdb) { - if (hwdb && REFCNT_DEC(hwdb->n_ref) == 0) { - if (hwdb->map) - munmap((void *)hwdb->map, hwdb->st.st_size); - if (hwdb->f) - fclose(hwdb->f); - free(hwdb->modalias); - ordered_hashmap_free(hwdb->properties); - free(hwdb); - } - - return NULL; -} - -bool hwdb_validate(sd_hwdb *hwdb) { - bool found = false; - const char* p; - struct stat st; - - if (!hwdb) - return false; - if (!hwdb->f) - return false; - - /* if hwdb.bin doesn't exist anywhere, we need to update */ - NULSTR_FOREACH(p, hwdb_bin_paths) { - if (stat(p, &st) >= 0) { - found = true; - break; - } - } - if (!found) - return true; - - if (timespec_load(&hwdb->st.st_mtim) != timespec_load(&st.st_mtim)) - return true; - return false; -} - -static int properties_prepare(sd_hwdb *hwdb, const char *modalias) { - _cleanup_free_ char *mod = NULL; - int r; - - assert(hwdb); - assert(modalias); - - if (streq_ptr(modalias, hwdb->modalias)) - return 0; - - mod = strdup(modalias); - if (!mod) - return -ENOMEM; - - ordered_hashmap_clear(hwdb->properties); - - hwdb->properties_modified = true; - - r = trie_search_f(hwdb, modalias); - if (r < 0) - return r; - - free(hwdb->modalias); - hwdb->modalias = mod; - mod = NULL; - - return 0; -} - -_public_ int sd_hwdb_get(sd_hwdb *hwdb, const char *modalias, const char *key, const char **_value) { - const char *value; - int r; - - assert_return(hwdb, -EINVAL); - assert_return(hwdb->f, -EINVAL); - assert_return(modalias, -EINVAL); - assert_return(_value, -EINVAL); - - r = properties_prepare(hwdb, modalias); - if (r < 0) - return r; - - value = ordered_hashmap_get(hwdb->properties, key); - if (!value) - return -ENOENT; - - *_value = value; - - return 0; -} - -_public_ int sd_hwdb_seek(sd_hwdb *hwdb, const char *modalias) { - int r; - - assert_return(hwdb, -EINVAL); - assert_return(hwdb->f, -EINVAL); - assert_return(modalias, -EINVAL); - - r = properties_prepare(hwdb, modalias); - if (r < 0) - return r; - - hwdb->properties_modified = false; - hwdb->properties_iterator = ITERATOR_FIRST; - - return 0; -} - -_public_ int sd_hwdb_enumerate(sd_hwdb *hwdb, const char **key, const char **value) { - const void *k, *v; - - assert_return(hwdb, -EINVAL); - assert_return(key, -EINVAL); - assert_return(value, -EINVAL); - - if (hwdb->properties_modified) - return -EAGAIN; - - v = ordered_hashmap_iterate(hwdb->properties, &hwdb->properties_iterator, &k); - if (!k) - return 0; - - *key = k; - *value = v; - - return 1; -} |