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-rw-r--r--e2fsprogs/old_e2fsprogs/blkid/read.c459
1 files changed, 0 insertions, 459 deletions
diff --git a/e2fsprogs/old_e2fsprogs/blkid/read.c b/e2fsprogs/old_e2fsprogs/blkid/read.c
deleted file mode 100644
index feeda51..0000000
--- a/e2fsprogs/old_e2fsprogs/blkid/read.c
+++ /dev/null
@@ -1,459 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * read.c - read the blkid cache from disk, to avoid scanning all devices
- *
- * Copyright (C) 2001, 2003 Theodore Y. Ts'o
- * Copyright (C) 2001 Andreas Dilger
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <ctype.h>
-#include <string.h>
-#include <time.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <errno.h>
-
-#include "blkidP.h"
-#include "../uuid/uuid.h"
-
-#ifdef HAVE_STRTOULL
-#define __USE_ISOC9X
-#define STRTOULL strtoull /* defined in stdlib.h if you try hard enough */
-#else
-/* FIXME: need to support real strtoull here */
-#define STRTOULL strtoul
-#endif
-
-#include <stdlib.h>
-
-#ifdef TEST_PROGRAM
-#define blkid_debug_dump_dev(dev) (debug_dump_dev(dev))
-static void debug_dump_dev(blkid_dev dev);
-#endif
-
-/*
- * File format:
- *
- * <device [<NAME="value"> ...]>device_name</device>
- *
- * The following tags are required for each entry:
- * <ID="id"> unique (within this file) ID number of this device
- * <TIME="time"> (ascii time_t) time this entry was last read from disk
- * <TYPE="type"> (detected) type of filesystem/data for this partition
- *
- * The following tags may be present, depending on the device contents
- * <LABEL="label"> (user supplied) label (volume name, etc)
- * <UUID="uuid"> (generated) universally unique identifier (serial no)
- */
-
-static char *skip_over_blank(char *cp)
-{
- while (*cp && isspace(*cp))
- cp++;
- return cp;
-}
-
-static char *skip_over_word(char *cp)
-{
- char ch;
-
- while ((ch = *cp)) {
- /* If we see a backslash, skip the next character */
- if (ch == '\\') {
- cp++;
- if (*cp == '\0')
- break;
- cp++;
- continue;
- }
- if (isspace(ch) || ch == '<' || ch == '>')
- break;
- cp++;
- }
- return cp;
-}
-
-static char *strip_line(char *line)
-{
- char *p;
-
- line = skip_over_blank(line);
-
- p = line + strlen(line) - 1;
-
- while (*line) {
- if (isspace(*p))
- *p-- = '\0';
- else
- break;
- }
-
- return line;
-}
-
-/*
- * Start parsing a new line from the cache.
- *
- * line starts with "<device" return 1 -> continue parsing line
- * line starts with "<foo", empty, or # return 0 -> skip line
- * line starts with other, return -BLKID_ERR_CACHE -> error
- */
-static int parse_start(char **cp)
-{
- char *p;
-
- p = strip_line(*cp);
-
- /* Skip comment or blank lines. We can't just NUL the first '#' char,
- * in case it is inside quotes, or escaped.
- */
- if (*p == '\0' || *p == '#')
- return 0;
-
- if (!strncmp(p, "<device", 7)) {
- DBG(DEBUG_READ, printf("found device header: %8s\n", p));
- p += 7;
-
- *cp = p;
- return 1;
- }
-
- if (*p == '<')
- return 0;
-
- return -BLKID_ERR_CACHE;
-}
-
-/* Consume the remaining XML on the line (cosmetic only) */
-static int parse_end(char **cp)
-{
- *cp = skip_over_blank(*cp);
-
- if (!strncmp(*cp, "</device>", 9)) {
- DBG(DEBUG_READ, printf("found device trailer %9s\n", *cp));
- *cp += 9;
- return 0;
- }
-
- return -BLKID_ERR_CACHE;
-}
-
-/*
- * Allocate a new device struct with device name filled in. Will handle
- * finding the device on lines of the form:
- * <device foo=bar>devname</device>
- * <device>devname<foo>bar</foo></device>
- */
-static int parse_dev(blkid_cache cache, blkid_dev *dev, char **cp)
-{
- char *start, *tmp, *end, *name;
- int ret;
-
- if ((ret = parse_start(cp)) <= 0)
- return ret;
-
- start = tmp = strchr(*cp, '>');
- if (!start) {
- DBG(DEBUG_READ,
- printf("blkid: short line parsing dev: %s\n", *cp));
- return -BLKID_ERR_CACHE;
- }
- start = skip_over_blank(start + 1);
- end = skip_over_word(start);
-
- DBG(DEBUG_READ, printf("device should be %*s\n", end - start, start));
-
- if (**cp == '>')
- *cp = end;
- else
- (*cp)++;
-
- *tmp = '\0';
-
- if (!(tmp = strrchr(end, '<')) || parse_end(&tmp) < 0) {
- DBG(DEBUG_READ,
- printf("blkid: missing </device> ending: %s\n", end));
- } else if (tmp)
- *tmp = '\0';
-
- if (end - start <= 1) {
- DBG(DEBUG_READ, printf("blkid: empty device name: %s\n", *cp));
- return -BLKID_ERR_CACHE;
- }
-
- name = blkid_strndup(start, end-start);
- if (name == NULL)
- return -BLKID_ERR_MEM;
-
- DBG(DEBUG_READ, printf("found dev %s\n", name));
-
- if (!(*dev = blkid_get_dev(cache, name, BLKID_DEV_CREATE)))
- return -BLKID_ERR_MEM;
-
- free(name);
- return 1;
-}
-
-/*
- * Extract a tag of the form NAME="value" from the line.
- */
-static int parse_token(char **name, char **value, char **cp)
-{
- char *end;
-
- if (!name || !value || !cp)
- return -BLKID_ERR_PARAM;
-
- if (!(*value = strchr(*cp, '=')))
- return 0;
-
- **value = '\0';
- *name = strip_line(*cp);
- *value = skip_over_blank(*value + 1);
-
- if (**value == '"') {
- end = strchr(*value + 1, '"');
- if (!end) {
- DBG(DEBUG_READ,
- printf("unbalanced quotes at: %s\n", *value));
- *cp = *value;
- return -BLKID_ERR_CACHE;
- }
- (*value)++;
- *end = '\0';
- end++;
- } else {
- end = skip_over_word(*value);
- if (*end) {
- *end = '\0';
- end++;
- }
- }
- *cp = end;
-
- return 1;
-}
-
-/*
- * Extract a tag of the form <NAME>value</NAME> from the line.
- */
-/*
-static int parse_xml(char **name, char **value, char **cp)
-{
- char *end;
-
- if (!name || !value || !cp)
- return -BLKID_ERR_PARAM;
-
- *name = strip_line(*cp);
-
- if ((*name)[0] != '<' || (*name)[1] == '/')
- return 0;
-
- FIXME: finish this.
-}
-*/
-
-/*
- * Extract a tag from the line.
- *
- * Return 1 if a valid tag was found.
- * Return 0 if no tag found.
- * Return -ve error code.
- */
-static int parse_tag(blkid_cache cache, blkid_dev dev, char **cp)
-{
- char *name;
- char *value;
- int ret;
-
- if (!cache || !dev)
- return -BLKID_ERR_PARAM;
-
- if ((ret = parse_token(&name, &value, cp)) <= 0 /* &&
- (ret = parse_xml(&name, &value, cp)) <= 0 */)
- return ret;
-
- /* Some tags are stored directly in the device struct */
- if (!strcmp(name, "DEVNO"))
- dev->bid_devno = STRTOULL(value, 0, 0);
- else if (!strcmp(name, "PRI"))
- dev->bid_pri = strtol(value, 0, 0);
- else if (!strcmp(name, "TIME"))
- /* FIXME: need to parse a long long eventually */
- dev->bid_time = strtol(value, 0, 0);
- else
- ret = blkid_set_tag(dev, name, value, strlen(value));
-
- DBG(DEBUG_READ, printf(" tag: %s=\"%s\"\n", name, value));
-
- return ret < 0 ? ret : 1;
-}
-
-/*
- * Parse a single line of data, and return a newly allocated dev struct.
- * Add the new device to the cache struct, if one was read.
- *
- * Lines are of the form <device [TAG="value" ...]>/dev/foo</device>
- *
- * Returns -ve value on error.
- * Returns 0 otherwise.
- * If a valid device was read, *dev_p is non-NULL, otherwise it is NULL
- * (e.g. comment lines, unknown XML content, etc).
- */
-static int blkid_parse_line(blkid_cache cache, blkid_dev *dev_p, char *cp)
-{
- blkid_dev dev;
- int ret;
-
- if (!cache || !dev_p)
- return -BLKID_ERR_PARAM;
-
- *dev_p = NULL;
-
- DBG(DEBUG_READ, printf("line: %s\n", cp));
-
- if ((ret = parse_dev(cache, dev_p, &cp)) <= 0)
- return ret;
-
- dev = *dev_p;
-
- while ((ret = parse_tag(cache, dev, &cp)) > 0) {
- ;
- }
-
- if (dev->bid_type == NULL) {
- DBG(DEBUG_READ,
- printf("blkid: device %s has no TYPE\n",dev->bid_name));
- blkid_free_dev(dev);
- }
-
- DBG(DEBUG_READ, blkid_debug_dump_dev(dev));
-
- return ret;
-}
-
-/*
- * Parse the specified filename, and return the data in the supplied or
- * a newly allocated cache struct. If the file doesn't exist, return a
- * new empty cache struct.
- */
-void blkid_read_cache(blkid_cache cache)
-{
- FILE *file;
- char buf[4096];
- int fd, lineno = 0;
- struct stat st;
-
- if (!cache)
- return;
-
- /*
- * If the file doesn't exist, then we just return an empty
- * struct so that the cache can be populated.
- */
- if ((fd = open(cache->bic_filename, O_RDONLY)) < 0)
- return;
- if (fstat(fd, &st) < 0)
- goto errout;
- if ((st.st_mtime == cache->bic_ftime) ||
- (cache->bic_flags & BLKID_BIC_FL_CHANGED)) {
- DBG(DEBUG_CACHE, printf("skipping re-read of %s\n",
- cache->bic_filename));
- goto errout;
- }
-
- DBG(DEBUG_CACHE, printf("reading cache file %s\n",
- cache->bic_filename));
-
- file = xfdopen_for_read(fd);
-
- while (fgets(buf, sizeof(buf), file)) {
- blkid_dev dev;
- unsigned int end;
-
- lineno++;
- if (buf[0] == 0)
- continue;
- end = strlen(buf) - 1;
- /* Continue reading next line if it ends with a backslash */
- while (end < sizeof(buf) - 2 && buf[end] == '\\' &&
- fgets(buf + end, sizeof(buf) - end, file)) {
- end = strlen(buf) - 1;
- lineno++;
- }
-
- if (blkid_parse_line(cache, &dev, buf) < 0) {
- DBG(DEBUG_READ,
- printf("blkid: bad format on line %d\n", lineno));
- continue;
- }
- }
- fclose(file);
-
- /*
- * Initially we do not need to write out the cache file.
- */
- cache->bic_flags &= ~BLKID_BIC_FL_CHANGED;
- cache->bic_ftime = st.st_mtime;
-
- return;
-errout:
- close(fd);
-}
-
-#ifdef TEST_PROGRAM
-static void debug_dump_dev(blkid_dev dev)
-{
- struct list_head *p;
-
- if (!dev) {
- printf(" dev: NULL\n");
- return;
- }
-
- printf(" dev: name = %s\n", dev->bid_name);
- printf(" dev: DEVNO=\"0x%0llx\"\n", dev->bid_devno);
- printf(" dev: TIME=\"%lu\"\n", dev->bid_time);
- printf(" dev: PRI=\"%d\"\n", dev->bid_pri);
- printf(" dev: flags = 0x%08X\n", dev->bid_flags);
-
- list_for_each(p, &dev->bid_tags) {
- blkid_tag tag = list_entry(p, struct blkid_struct_tag, bit_tags);
- if (tag)
- printf(" tag: %s=\"%s\"\n", tag->bit_name,
- tag->bit_val);
- else
- printf(" tag: NULL\n");
- }
- bb_putchar('\n');
-}
-
-int main(int argc, char**argv)
-{
- blkid_cache cache = NULL;
- int ret;
-
- blkid_debug_mask = DEBUG_ALL;
- if (argc > 2) {
- fprintf(stderr, "Usage: %s [filename]\n"
- "Test parsing of the cache (filename)\n", argv[0]);
- exit(1);
- }
- if ((ret = blkid_get_cache(&cache, argv[1])) < 0)
- fprintf(stderr, "error %d reading cache file %s\n", ret,
- argv[1] ? argv[1] : BLKID_CACHE_FILE);
-
- blkid_put_cache(cache);
-
- return ret;
-}
-#endif