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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 14:18:53 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 14:18:53 +0000 |
commit | a0e0018c9a7ef5ce7f6d2c3ae16aecbbd16a8f67 (patch) | |
tree | 8feaf1a1932871b139b3b30be4c09c66489918be /lib/names.c | |
parent | Initial commit. (diff) | |
download | iproute2-upstream/6.1.0.tar.xz iproute2-upstream/6.1.0.zip |
Adding upstream version 6.1.0.upstream/6.1.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | lib/names.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/lib/names.c b/lib/names.c new file mode 100644 index 0000000..b46ea79 --- /dev/null +++ b/lib/names.c @@ -0,0 +1,152 @@ +/* + * names.c db names + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + */ + +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <errno.h> + +#include "names.h" +#include "utils.h" + +#define MAX_ENTRIES 256 +#define NAME_MAX_LEN 512 + +static int read_id_name(FILE *fp, int *id, char *name) +{ + char buf[NAME_MAX_LEN]; + int min, maj; + + while (fgets(buf, sizeof(buf), fp)) { + char *p = buf; + + while (*p == ' ' || *p == '\t') + p++; + + if (*p == '#' || *p == '\n' || *p == 0) + continue; + + if (sscanf(p, "%x:%x %s\n", &maj, &min, name) == 3) { + *id = (maj << 16) | min; + } else if (sscanf(p, "%x:%x %s #", &maj, &min, name) == 3) { + *id = (maj << 16) | min; + } else if (sscanf(p, "0x%x %s\n", id, name) != 2 && + sscanf(p, "0x%x %s #", id, name) != 2 && + sscanf(p, "%d %s\n", id, name) != 2 && + sscanf(p, "%d %s #", id, name) != 2) { + strcpy(name, p); + return -1; + } + return 1; + } + + return 0; +} + +struct db_names *db_names_alloc(void) +{ + struct db_names *db; + + db = calloc(1, sizeof(*db)); + if (!db) + return NULL; + + db->size = MAX_ENTRIES; + db->hash = calloc(db->size, sizeof(struct db_entry *)); + + return db; +} + +int db_names_load(struct db_names *db, const char *path) +{ + struct db_entry *entry; + FILE *fp; + int id; + char namebuf[NAME_MAX_LEN] = {0}; + int ret = -1; + + fp = fopen(path, "r"); + if (!fp) + return -ENOENT; + + while ((ret = read_id_name(fp, &id, &namebuf[0]))) { + if (ret == -1) { + fprintf(stderr, "Database %s is corrupted at %s\n", + path, namebuf); + goto Exit; + } + ret = -1; + + if (id < 0) + continue; + + entry = malloc(sizeof(*entry)); + if (!entry) + goto Exit; + + entry->name = strdup(namebuf); + if (!entry->name) { + free(entry); + goto Exit; + } + + entry->id = id; + entry->next = db->hash[id & (db->size - 1)]; + db->hash[id & (db->size - 1)] = entry; + } + ret = 0; + +Exit: + fclose(fp); + return ret; +} + +void db_names_free(struct db_names *db) +{ + int i; + + if (!db) + return; + + for (i = 0; i < db->size; i++) { + struct db_entry *entry = db->hash[i]; + + while (entry) { + struct db_entry *next = entry->next; + + free(entry->name); + free(entry); + entry = next; + } + } + + free(db->hash); + free(db); +} + +char *id_to_name(struct db_names *db, int id, char *name) +{ + struct db_entry *entry; + + if (!db) + return NULL; + + entry = db->hash[id & (db->size - 1)]; + while (entry && entry->id != id) + entry = entry->next; + + if (entry) { + strncpy(name, entry->name, IDNAME_MAX); + return name; + } + + snprintf(name, IDNAME_MAX, "%d", id); + return NULL; +} |