#include "fcint.h"
#include "../fc-arch/fcarch.h"
+#include <stdio.h>
#include <fcntl.h>
#include <dirent.h>
#include <string.h>
#define O_BINARY 0
#endif
-static int
+static FILE *
FcDirCacheOpen (FcConfig *config, const FcChar8 *dir, FcChar8 **cache_path);
-static off_t
-FcCacheSkipToArch (int fd, const char * arch);
-
-static FcBool
-FcCacheCopyOld (int fd, int fd_orig, off_t start);
-
static void *
FcDirCacheProduce (FcFontSet *set, FcCache * metadata);
-static FcBool
-FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config);
-
-static int
+static off_t
FcCacheNextOffset(off_t w);
-static char *
-FcCacheMachineSignature (void);
-
static FcBool
FcCacheHaveBank (int bank);
#define FC_DBG_CACHE_REF 1024
static char *
-FcCacheReadString (int fd, char *dest, int len)
+FcCacheReadString (FILE *file, char *dest, int len)
{
- int size;
- int slen;
+ int c;
+ char *d = dest;
if (len == 0)
return 0;
- size = read (fd, dest, len-1);
-
- if (size > 0)
- {
- dest[size] = '\0';
- slen = strlen (dest);
-
- lseek (fd, slen - size + 1, SEEK_CUR);
- return slen < len ? dest : 0;
+ while ((c = getc (file)) != EOF && len > 0) {
+ *d++ = c;
+ if (c == '\0')
+ return dest;
+ len--;
}
-
return 0;
}
-static void
-FcCacheSkipString (int fd)
-{
- char buf[256];
- int size;
- int slen;
-
- while ( (size = read (fd, buf, sizeof (buf)-1)) > 0)
- {
- buf [size] = '\0';
- slen = strlen (buf);
- if (slen < size)
- {
- lseek (fd, slen - size + 1, SEEK_CUR);
- return;
- }
- }
-}
-
static FcBool
FcCacheWriteString (int fd, const char *chars)
{
return FcTrue;
}
-static void
-FcGlobalCacheDirDestroy (FcGlobalCacheDir *d)
-{
- FcStrSetDestroy (d->subdirs);
- FcMemFree (FC_MEM_STRING, strlen (d->name)+1);
- free (d->name);
- FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir));
- free (d);
-}
-
-FcGlobalCache *
-FcGlobalCacheCreate (void)
-{
- FcGlobalCache *cache;
-
- cache = malloc (sizeof (FcGlobalCache));
- if (!cache)
- return 0;
- FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache));
- cache->dirs = 0;
- cache->updated = FcFalse;
- cache->fd = -1;
- return cache;
-}
-
-void
-FcGlobalCacheDestroy (FcGlobalCache *cache)
-{
- FcGlobalCacheDir *d, *next;
-
- for (d = cache->dirs; d; d = next)
- {
- next = d->next;
- FcGlobalCacheDirDestroy (d);
- }
- FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache));
- if (cache->fd != -1)
- close (cache->fd);
- free (cache);
-}
-
-void
-FcGlobalCacheLoad (FcGlobalCache *cache,
- FcStrSet *staleDirs,
- const FcChar8 *cache_file,
- FcConfig *config)
-{
- char name_buf[FC_MAX_FILE_LEN];
- FcGlobalCacheDir *d, *next;
- FcFileTime config_time = FcConfigModifiedTime (config);
- char * current_arch_machine_name;
- char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
- off_t current_arch_start;
-
- struct stat cache_stat, dir_stat;
- char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
-
- if (stat ((char *) cache_file, &cache_stat) < 0)
- return;
-
- cache->fd = open ((char *) cache_file, O_RDONLY | O_BINARY);
- if (cache->fd == -1)
- return;
-
- cache->updated = FcFalse;
-
- if (!FcCacheReadString (cache->fd, name_buf, sizeof (name_buf)))
- goto bail_and_destroy;
- if (strcmp (name_buf, FC_GLOBAL_MAGIC_COOKIE) != 0)
- goto bail_and_destroy;
-
- current_arch_machine_name = FcCacheMachineSignature ();
- current_arch_start = FcCacheSkipToArch(cache->fd,
- current_arch_machine_name);
- if (current_arch_start < 0)
- goto bail1;
-
- lseek (cache->fd, current_arch_start, SEEK_SET);
- if (!FcCacheReadString (cache->fd, candidate_arch_machine_name,
- sizeof (candidate_arch_machine_name)))
- goto bail_and_destroy;
- if (strlen(candidate_arch_machine_name) == 0)
- goto bail_and_destroy;
-
- while (1)
- {
- off_t targ;
-
- if (!FcCacheReadString (cache->fd, name_buf, sizeof (name_buf)) ||
- !strlen(name_buf))
- break;
-
- /* Directory must be older than the global cache file; also
- cache must be newer than the config file. */
- if (stat ((char *) name_buf, &dir_stat) < 0 ||
- dir_stat.st_mtime > cache_stat.st_mtime ||
- (config_time.set && cache_stat.st_mtime < config_time.time))
- {
- FcCache md;
- off_t off;
-
- FcStrSetAdd (staleDirs, (FcChar8 *)name_buf);
-
- /* skip subdirs */
- while (FcCacheReadString (cache->fd, subdirName,
- sizeof (subdirName)) &&
- strlen (subdirName))
- ;
-
- if (read (cache->fd, &md, sizeof (FcCache)) != sizeof(FcCache))
- {
- perror ("read metadata");
- goto bail1;
- }
- off = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + md.count;
- if (lseek (cache->fd, off, SEEK_SET) != off)
- {
- perror ("lseek");
- goto bail1;
- }
- continue;
- }
-
- d = malloc (sizeof (FcGlobalCacheDir));
- if (!d)
- goto bail1;
-
- d->next = cache->dirs;
- cache->dirs = d;
-
- d->name = (char *)FcStrCopy ((FcChar8 *)name_buf);
- d->ent = 0;
- d->state = FcGCDirFileRead;
-
- d->subdirs = FcStrSetCreate();
- do
- {
- if (!FcCacheReadString (cache->fd, subdirName,
- sizeof (subdirName)) ||
- !strlen (subdirName))
- break;
- FcStrSetAdd (d->subdirs, (FcChar8 *)subdirName);
- } while (1);
-
- d->offset = lseek (cache->fd, 0, SEEK_CUR);
- if (read (cache->fd, &d->metadata, sizeof (FcCache)) != sizeof (FcCache))
- goto bail1;
- targ = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + d->metadata.count;
- if (lseek (cache->fd, targ, SEEK_SET) != targ)
- goto bail1;
- }
- return;
-
- bail1:
- for (d = cache->dirs; d; d = next)
- {
- next = d->next;
- free (d);
- }
- cache->dirs = 0;
-
- close (cache->fd);
- cache->fd = -1;
- return;
-
- bail_and_destroy:
- close (cache->fd);
- cache->fd = -1;
-
- if (stat ((char *) cache_file, &cache_stat) == 0)
- unlink ((char *)cache_file);
-
- return;
-
-}
-
-FcBool
-FcGlobalCacheReadDir (FcFontSet *set, FcStrSet *dirs, FcGlobalCache * cache, const char *dir, FcConfig *config)
-{
- FcGlobalCacheDir *d;
- int i;
-
- if (cache->fd == -1)
- return FcFalse;
-
- for (d = cache->dirs; d; d = d->next)
- {
- if (strcmp (d->name, dir) == 0)
- {
- if (d->state == FcGCDirDisabled)
- return FcFalse;
-
- if (d->state == FcGCDirFileRead)
- {
- lseek (cache->fd, d->offset, SEEK_SET);
- if (!FcDirCacheConsume (cache->fd, d->name, set, config))
- return FcFalse;
-
- for (i = 0; i < d->subdirs->num; i++)
- FcStrSetAdd (dirs, (FcChar8 *)d->subdirs->strs[i]);
-
- d->state = FcGCDirConsumed;
- }
- return FcTrue;
- }
- }
-
- return FcFalse;
-}
-
-static FcGlobalCacheDir *
-FcGlobalCacheDirFind (FcGlobalCache *cache, const char *name)
-{
- FcGlobalCacheDir * d;
-
- if (!cache || !name)
- return NULL;
-
- for (d = cache->dirs; d; d = d->next)
- if (strcmp((const char *)d->name, (const char *)name) == 0)
- return d;
-
- return NULL;
- }
-
-FcBool
-FcGlobalCacheUpdate (FcGlobalCache *cache,
- FcStrSet *dirs,
- const char *name,
- FcFontSet *set,
- FcConfig *config)
-{
- FcGlobalCacheDir *d;
- int i;
-
- d = FcGlobalCacheDirFind (cache, name);
-
- if (!d)
- {
- d = malloc (sizeof (FcGlobalCacheDir));
- if (!d)
- return FcFalse;
- d->next = cache->dirs;
- cache->dirs = d;
- } else {
- /* free old resources */
- FcStrFree ((FcChar8 *)d->name);
- free (d->ent);
- FcStrSetDestroy (d->subdirs);
- }
-
- cache->updated = FcTrue;
-
- d->name = (char *)FcStrCopy ((FcChar8 *)name);
- d->ent = FcDirCacheProduce (set, &d->metadata);
- d->offset = 0;
- d->subdirs = FcStrSetCreate();
- d->state = FcGCDirUpdated;
- for (i = 0; i < dirs->num; i++)
- FcStrSetAdd (d->subdirs, dirs->strs[i]);
- return FcTrue;
-}
-
-FcBool
-FcGlobalCacheSave (FcGlobalCache *cache,
- const FcChar8 *cache_file,
- FcConfig *config)
-{
- int fd, fd_orig;
- FcGlobalCacheDir *dir;
- FcAtomic *atomic;
- off_t current_arch_start = 0, truncate_to;
- char * current_arch_machine_name, * header;
-
- if (!cache->updated)
- return FcTrue;
-
-#if defined (HAVE_GETUID) && defined (HAVE_GETEUID)
- /* Set-UID programs can't safely update the cache */
- if (getuid () != geteuid ())
- return FcFalse;
-#endif
-
- atomic = FcAtomicCreate (cache_file);
- if (!atomic)
- return FcFalse;
-
- if (!FcAtomicLock (atomic))
- goto bail1;
- fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT | O_BINARY,
- S_IRUSR | S_IWUSR);
- if (fd == -1)
- goto bail2;
- FcCacheWriteString (fd, FC_GLOBAL_MAGIC_COOKIE);
-
- fd_orig = open ((char *) FcAtomicOrigFile(atomic), O_RDONLY | O_BINARY);
-
- current_arch_machine_name = FcCacheMachineSignature ();
- if (fd_orig == -1)
- current_arch_start = 0;
- else
- current_arch_start = FcCacheSkipToArch (fd_orig,
- current_arch_machine_name);
-
- if (current_arch_start < 0)
- {
- off_t i = lseek(fd_orig, 0, SEEK_END);
- if (i < strlen (FC_GLOBAL_MAGIC_COOKIE)+1)
- i = strlen (FC_GLOBAL_MAGIC_COOKIE)+1;
- current_arch_start = FcCacheNextOffset (i);
- }
-
- if (!FcCacheCopyOld(fd, fd_orig, current_arch_start))
- goto bail3;
-
- current_arch_start = lseek(fd, 0, SEEK_CUR);
-#if defined (HAVE_FTRUNCATE)
- if (ftruncate (fd, current_arch_start) == -1)
- goto bail3;
-#else
-#if defined (HAVE_CHSIZE)
- if (chsize (fd, current_arch_start) == -1)
- goto bail3;
-#else
- goto bail3;
-#endif
-#endif
-
- header = malloc (10 + strlen (current_arch_machine_name));
- if (!header)
- goto bail3;
-
- truncate_to = current_arch_start + strlen(current_arch_machine_name) + 11;
- for (dir = cache->dirs; dir; dir = dir->next)
- {
- int i;
-
- if (dir->state == FcGCDirDisabled)
- continue;
- truncate_to += strlen(dir->name) + 1;
- truncate_to += sizeof (FcCache);
- truncate_to = FcCacheNextOffset (truncate_to);
- truncate_to += dir->metadata.count;
-
- for (i = 0; i < dir->subdirs->size; i++)
- truncate_to += strlen((char *)dir->subdirs->strs[i]) + 1;
- truncate_to ++;
- }
- truncate_to -= current_arch_start;
-
- sprintf (header, "%8x ", (int)truncate_to);
- strcat (header, current_arch_machine_name);
- if (!FcCacheWriteString (fd, header))
- goto bail4;
-
- free (header);
-
- for (dir = cache->dirs; dir; dir = dir->next)
- {
- int i;
- const char * d;
- off_t off;
-
- if (!dir->name || dir->state == FcGCDirDisabled)
- continue;
- d = dir->name;
- if (!d)
- continue;
-
- if (dir->metadata.count && !dir->ent)
- {
- if (dir->state == FcGCDirUpdated || fd_orig < 0)
- {
- fprintf(stderr, "Invalid metadata entry for %s, skipping...\n", d);
- continue;
- }
- /* copy the old content */
- dir->ent = malloc (dir->metadata.count);
- if (!dir->ent)
- {
- perror("malloc error");
- continue;
- }
- off = FcCacheNextOffset (dir->offset + sizeof(FcCache));
- if (lseek (fd_orig, off, SEEK_SET) != off)
- {
- perror("lseek");
- free(dir->ent);
- continue;
- }
- if (read (fd_orig, dir->ent, dir->metadata.count)
- != dir->metadata.count)
- {
- perror("read");
- free(dir->ent);
- continue;
- }
- }
-
- FcCacheWriteString (fd, d);
-
- for (i = 0; i < dir->subdirs->size; i++)
- FcCacheWriteString (fd, (char *)dir->subdirs->strs[i]);
- FcCacheWriteString (fd, "");
-
- if (write (fd, &dir->metadata, sizeof(FcCache)) != sizeof(FcCache))
- {
- perror ("write metadata");
- free (dir->ent);
- continue;
- }
- off = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
- if (lseek (fd, off, SEEK_SET) != off)
- {
- perror ("lseek");
- free (dir->ent);
- continue;
- }
- if (dir->metadata.count)
- {
- if (write (fd, dir->ent, dir->metadata.count) != dir->metadata.count)
- {
- perror ("write dirent");
- free (dir->ent);
- continue;
- }
- }
- free (dir->ent);
- }
- FcCacheWriteString (fd, "");
-
- if (close (fd) == -1)
- goto bail25;
-
- close (fd_orig);
- fd_orig = -1;
-
- if (!FcAtomicReplaceOrig (atomic))
- goto bail25;
-
- FcAtomicUnlock (atomic);
- FcAtomicDestroy (atomic);
-
- cache->updated = FcFalse;
- return FcTrue;
-
- bail4:
- free (header);
- bail3:
- if (fd_orig != -1)
- close (fd_orig);
-
- close (fd);
- bail25:
- FcAtomicDeleteNew (atomic);
- bail2:
- FcAtomicUnlock (atomic);
- bail1:
- FcAtomicDestroy (atomic);
- return FcFalse;
-}
-
/*
* Find the next presumably-mmapable offset after the supplied file
* position.
*/
-static int
+static off_t
FcCacheNextOffset(off_t w)
{
static long pagesize = -1;
return ((w / pagesize)+1)*pagesize;
}
-/* return the address of the segment for the provided arch,
- * or -1 if arch not found */
-static off_t
-FcCacheSkipToArch (int fd, const char * arch)
-{
- char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9];
- char * candidate_arch;
- off_t current_arch_start = 0;
-
- lseek (fd, 0, SEEK_SET);
- FcCacheSkipString (fd);
- current_arch_start = lseek (fd, 0, SEEK_CUR);
-
- /* skip arches that are not the current arch */
- while (1)
- {
- long bs;
-
- if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start)
- return -1;
-
- if (FcCacheReadString (fd, candidate_arch_machine_name_count,
- sizeof (candidate_arch_machine_name_count)) == 0)
- return -1;
- if (!strlen(candidate_arch_machine_name_count))
- return -1;
- bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16);
-
- /* count = 0 should probably be distinguished from the !bs condition */
- if (!bs || bs < strlen (candidate_arch_machine_name_count))
- return -1;
-
- candidate_arch++; /* skip leading space */
-
- if (strcmp (candidate_arch, arch)==0)
- return current_arch_start;
- current_arch_start += bs;
- current_arch_start = FcCacheNextOffset (current_arch_start);
- }
-}
-
-/* Cuts out the segment at the file pointer (moves everything else
- * down to cover it), and leaves the file pointer at the end of the
- * file. */
-static FcBool
-FcCacheCopyOld (int fd, int fd_orig, off_t start)
-{
- char * buf = malloc (8192);
- char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
- long bs;
- int c, bytes_skipped;
- off_t loc;
-
- if (!buf)
- return FcFalse;
-
- loc = 0;
- lseek (fd, 0, SEEK_SET); lseek (fd_orig, 0, SEEK_SET);
- FcCacheSkipString (fd); FcCacheSkipString (fd_orig);
- do
- {
- int b = 8192;
- if (loc + b > start)
- b = start - loc;
-
- if ((c = read (fd_orig, buf, b)) <= 0)
- break;
- if (write (fd, buf, c) < 0)
- goto bail;
-
- loc += c;
- }
- while (c > 0);
-
- lseek (fd, start, SEEK_SET);
- if (FcCacheReadString (fd, candidate_arch_machine_name,
- sizeof (candidate_arch_machine_name)) == 0)
- goto done;
- if (!strlen(candidate_arch_machine_name))
- goto done;
-
- bs = strtol(candidate_arch_machine_name, 0, 16);
- if (bs == 0)
- goto done;
-
- bytes_skipped = 0;
- do
- {
- lseek (fd, start+bs+bytes_skipped, SEEK_SET);
- if ((c = read (fd, buf, 8192)) <= 0)
- break;
- lseek (fd, start+bytes_skipped, SEEK_SET);
- if (write (fd, buf, c) < 0)
- goto bail;
- bytes_skipped += c;
- }
- while (c > 0);
- lseek (fd, start+bytes_skipped, SEEK_SET);
-
- done:
- free (buf);
- return FcTrue;
-
- bail:
- free (buf);
- return FcFalse;
-}
-
/* Does not check that the cache has the appropriate arch section. */
FcBool
FcDirCacheValid (const FcChar8 *dir, FcConfig *config)
{
- int fd;
+ FILE *file;
- fd = FcDirCacheOpen (config, dir, NULL);
+ file = FcDirCacheOpen (config, dir, NULL);
- if (fd < 0)
+ if (file != NULL)
return FcFalse;
- close (fd);
+ fclose (file);
return FcTrue;
}
-/* Assumes that the cache file in 'dir' exists.
- * Checks that the cache has the appropriate arch section. */
-FcBool
-FcDirCacheHasCurrentArch (const FcChar8 *dir, FcConfig *config)
-{
- int fd;
- off_t current_arch_start;
- char *current_arch_machine_name;
- FcCache metadata;
- char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
-
- fd = FcDirCacheOpen (config, dir, NULL);
- if (fd < 0)
- goto bail;
-
- current_arch_machine_name = FcCacheMachineSignature();
- current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
-
- if (current_arch_start >= 0)
- {
- if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start)
- goto bail1;
-
- FcCacheSkipString (fd);
-
- while (FcCacheReadString (fd, subdirName, sizeof (subdirName)) && strlen (subdirName) > 0)
- ;
-
- if (read(fd, &metadata, sizeof(FcCache)) != sizeof(FcCache))
- goto bail1;
-
- if (metadata.magic != FC_CACHE_MAGIC)
- goto bail1;
- }
-
- close (fd);
-
- if (current_arch_start < 0)
- return FcFalse;
-
- return FcTrue;
-
- bail1:
- close (fd);
- bail:
- return FcFalse;
-}
-
#define CACHEBASE_LEN (1 + 32 + 1 + sizeof (FC_ARCHITECTURE) + sizeof (FC_CACHE_SUFFIX))
static const char bin2hex[] = { '0', '1', '2', '3',
FcBool
FcDirCacheUnlink (const FcChar8 *dir, FcConfig *config)
{
- int fd = -1;
FcChar8 *cache_hashed = NULL;
FcChar8 cache_base[CACHEBASE_LEN];
FcStrList *list;
FcChar8 *cache_dir;
- char dir_buf[FC_MAX_FILE_LEN];
FcDirCacheBasename (dir, cache_base);
cache_hashed = FcStrPlus (cache_dir, cache_base);
if (!cache_hashed)
break;
- fd = open((char *) cache_hashed, O_RDONLY | O_BINARY);
- FcStrFree (cache_hashed);
- if (fd >= 0)
- {
- if (FcCacheReadString (fd, dir_buf, sizeof (dir_buf)) &&
- strcmp (dir_buf, (char *) dir) == 0)
- {
- close (fd);
- if (unlink ((char *) cache_hashed) < 0)
- break;
- } else
- close (fd);
- }
+ (void) unlink ((char *) cache_hashed);
}
FcStrListDone (list);
/* return FcFalse if something went wrong */
}
static int
-FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache,
+FcCacheReadDirs (FcConfig * config,
FcStrList *list, FcFontSet * set, FcStrSet *processed_dirs)
{
int ret = 0;
FcChar8 *dir;
FcStrSet *subdirs;
FcStrList *sublist;
- FcGlobalCacheDir *d;
/*
* Read in the results from 'list'.
continue;
}
- if (FcDirCacheRead (set, subdirs, dir, config))
- {
- /* if an old entry is found in the global cache, disable it */
- if ((d = FcGlobalCacheDirFind (cache, (const char *)dir)) != NULL)
- {
- d->state = FcGCDirDisabled;
- /* save the updated config later without this entry */
- cache->updated = FcTrue;
- }
- }
- else
- {
- if (FcDebug () & FC_DBG_FONTSET)
- printf ("cache scan dir %s\n", dir);
-
- FcDirScanConfig (set, subdirs, cache,
- config->blanks, dir, FcFalse, config);
- }
+ FcDirScanConfig (set, subdirs,
+ config->blanks, dir, FcFalse, config);
+
sublist = FcStrListCreate (subdirs);
FcStrSetDestroy (subdirs);
if (!sublist)
ret++;
continue;
}
- ret += FcCacheReadDirs (config, cache, sublist, set, processed_dirs);
+ ret += FcCacheReadDirs (config, sublist, set, processed_dirs);
}
FcStrListDone (list);
return ret;
}
FcFontSet *
-FcCacheRead (FcConfig *config, FcGlobalCache * cache)
+FcCacheRead (FcConfig *config)
{
FcFontSet *s = FcFontSetCreate();
FcStrSet *processed_dirs;
if (!processed_dirs)
goto bail;
- if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s, processed_dirs))
+ if (FcCacheReadDirs (config, FcConfigGetConfigDirs (config), s, processed_dirs))
goto bail1;
FcStrSetDestroy (processed_dirs);
* This searches the list of cache dirs for the relevant cache file,
* returning the first one found.
*/
-static int
+static FILE *
FcDirCacheOpen (FcConfig *config, const FcChar8 *dir, FcChar8 **cache_path)
{
- int fd = -1;
+ FILE *file = NULL;
FcChar8 *cache_hashed = NULL;
FcChar8 cache_base[CACHEBASE_LEN];
FcStrList *list;
FcChar8 *cache_dir;
- char dir_buf[FC_MAX_FILE_LEN];
struct stat file_stat, dir_stat;
if (stat ((char *) dir, &dir_stat) < 0)
- return -1;
+ return NULL;
FcDirCacheBasename (dir, cache_base);
list = FcStrListCreate (config->cacheDirs);
if (!list)
- return -1;
+ return NULL;
while ((cache_dir = FcStrListNext (list)))
{
cache_hashed = FcStrPlus (cache_dir, cache_base);
if (!cache_hashed)
break;
- fd = open((char *) cache_hashed, O_RDONLY | O_BINARY);
- if (fd >= 0) {
- if (fstat (fd, &file_stat) >= 0 &&
+ file = fopen((char *) cache_hashed, "rb");
+ if (file != NULL) {
+ if (fstat (fileno (file), &file_stat) >= 0 &&
dir_stat.st_mtime <= file_stat.st_mtime)
{
break;
}
- close (fd);
- fd = -1;
+ fclose (file);
+ file = NULL;
}
FcStrFree (cache_hashed);
cache_hashed = NULL;
}
FcStrListDone (list);
- if (fd < 0)
- return -1;
-
- if (!FcCacheReadString (fd, dir_buf, sizeof (dir_buf)) ||
- strcmp (dir_buf, (char *) dir) != 0)
- {
- close (fd);
- FcStrFree (cache_hashed);
- return -1;
- }
+ if (file == NULL)
+ return NULL;
if (cache_path)
*cache_path = cache_hashed;
else
FcStrFree (cache_hashed);
- return fd;
+ return file;
}
/* read serialized state from the cache file */
FcBool
-FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir, FcConfig *config)
+FcDirCacheRead (FcFontSet * set, FcStrSet * dirs,
+ const FcChar8 *dir, FcConfig *config)
{
- int fd;
- char *current_arch_machine_name;
- char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
- off_t current_arch_start = 0;
- char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
-
- fd = FcDirCacheOpen (config, dir, NULL);
- if (fd < 0)
- goto bail;
-
- current_arch_machine_name = FcCacheMachineSignature();
- current_arch_start = FcCacheSkipToArch(fd,
- current_arch_machine_name);
- if (current_arch_start < 0)
- goto bail1;
-
- lseek (fd, current_arch_start, SEEK_SET);
- if (FcCacheReadString (fd, candidate_arch_machine_name,
- sizeof (candidate_arch_machine_name)) == 0)
- goto bail1;
+ FILE *file;
+ FcCache metadata;
+ void *current_dir_block;
+ char subdir_name[FC_MAX_FILE_LEN + 1 + 12 + 1];
- while (FcCacheReadString (fd, subdirName, sizeof (subdirName)) && strlen (subdirName) > 0)
- FcStrSetAdd (dirs, (FcChar8 *)subdirName);
+ file = FcDirCacheOpen (config, dir, NULL);
+ if (file == NULL)
+ goto bail;
- if (!FcDirCacheConsume (fd, (const char *)dir, set, config))
+ if (fread(&metadata, sizeof(FcCache), 1, file) != 1)
goto bail1;
-
- close(fd);
- return FcTrue;
-
- bail1:
- close (fd);
- bail:
- return FcFalse;
-}
-
-static FcBool
-FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config)
-{
- FcCache metadata;
- void * current_dir_block;
- off_t pos, endpos;
-
- if (read(fd, &metadata, sizeof(FcCache)) != sizeof(FcCache))
- return FcFalse;
if (metadata.magic != FC_CACHE_MAGIC)
- return FcFalse;
-
- if (!metadata.count)
- {
- pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
- lseek (fd, pos, SEEK_SET);
- if (config)
- FcConfigAddFontDir (config, (FcChar8 *)dir);
- return FcTrue;
- }
-
- pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
-
- /* This is not failsafe (multi-arches can break it),
- * but fd has got to have at least as many bytes as
- * metadata.count, or something's going to go horribly wrong. */
- if (pos == (off_t)-1)
- return FcFalse;
+ goto bail1;
- endpos = lseek (fd, 0, SEEK_END);
- if (endpos == (off_t)-1 || endpos - pos < metadata.count)
- return FcFalse;
- if (lseek (fd, pos, SEEK_SET) == -1)
- return FcFalse;
+ while (FcCacheReadString (file, subdir_name, sizeof (subdir_name)) &&
+ strlen (subdir_name) > 0)
+ FcStrSetAdd (dirs, (FcChar8 *)subdir_name);
+ if (metadata.count)
+ {
+ int fd = fileno (file);
#if defined(HAVE_MMAP) || defined(__CYGWIN__)
- current_dir_block = mmap (0, metadata.count,
- PROT_READ, MAP_SHARED, fd, pos);
- if (current_dir_block == MAP_FAILED)
- return FcFalse;
+ current_dir_block = mmap (0, metadata.count,
+ PROT_READ, MAP_SHARED, fd, metadata.pos);
+ if (current_dir_block == MAP_FAILED)
+ goto bail1;
#elif defined(_WIN32)
{
- HANDLE hFileMap;
+ HANDLE hFileMap;
- hFileMap = CreateFileMapping((HANDLE) _get_osfhandle(fd), NULL, PAGE_READONLY, 0, 0, NULL);
- if (hFileMap == NULL)
- return FcFalse;
-
- current_dir_block = MapViewOfFile (hFileMap, FILE_MAP_READ, 0, 0, metadata.count + pos);
- if (current_dir_block == NULL)
- {
- CloseHandle (hFileMap);
- return FcFalse;
- }
+ hFileMap = CreateFileMapping((HANDLE) _get_osfhandle(fd), NULL, PAGE_READONLY, 0, 0, NULL);
+ if (hFileMap == NULL)
+ goto bail1;
- current_dir_block = (void *)((char *)current_dir_block + pos);
+ current_dir_block = MapViewOfFile (hFileMap, FILE_MAP_READ, 0, metadata.pos, metadata.count);
+ if (current_dir_block == NULL)
+ {
+ CloseHandle (hFileMap);
+ goto bail1;
+ }
}
#else
- current_dir_block = malloc (metadata.count);
- if (!current_dir_block)
- return FcFalse;
+ if (lseek (fd, metatdata.pos, SEEK_SET) == -1)
+ goto bail1;
- /* could also use CreateMappedViewOfFile under MinGW... */
- if (read (fd, current_dir_block, metadata.count) != metadata.count)
- goto bail;
-#endif
- lseek (fd, pos+metadata.count, SEEK_SET);
+ current_dir_block = malloc (metadata.count);
+ if (!current_dir_block)
+ goto bail1;
- FcCacheAddBankDir (metadata.bank, dir);
+ /* could also use CreateMappedViewOfFile under MinGW... */
+ if (read (fd, current_dir_block, metadata.count) != metadata.count)
+ {
+ free (current_dir_block);
+ goto bail1;
+ }
+#endif
+ FcCacheAddBankDir (metadata.bank, (char *) dir);
+ if (!FcFontSetUnserialize (&metadata, set, current_dir_block))
+ goto bail1;
+ }
if (config)
FcConfigAddFontDir (config, (FcChar8 *)dir);
- if (!FcFontSetUnserialize (&metadata, set, current_dir_block))
- goto bail;
-
+ fclose(file);
return FcTrue;
+
+ bail1:
+ fclose (file);
bail:
-#if !(defined(HAVE_MMAP) || defined(__CYGWIN__))
- free (current_dir_block);
-#endif
return FcFalse;
}
{
FcChar8 cache_base[CACHEBASE_LEN];
FcChar8 *cache_hashed;
- int fd, fd_orig, i, dirs_count;
+ int fd, i;
FcAtomic *atomic;
FcCache metadata;
- off_t current_arch_start = 0, truncate_to;
- FcStrList *list;
- char *current_arch_machine_name, * header;
void *current_dir_block = 0;
+ FcStrList *list;
FcChar8 *cache_dir = NULL;
FcChar8 *test_dir;
+ off_t header_len;
/*
* Write it to the first directory in the list which is writable
if (!FcAtomicLock (atomic))
goto bail2;
- /* open the original file to save relevant portions */
- fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY | O_BINARY);
-
fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666);
if (fd == -1)
goto bail3;
-
- FcCacheWriteString (fd, (char *) dir);
-
- current_arch_machine_name = FcCacheMachineSignature ();
- current_arch_start = 0;
-
- if (fd_orig != -1)
- current_arch_start =
- FcCacheSkipToArch(fd_orig, current_arch_machine_name);
-
- if (current_arch_start < 0)
- {
- off_t offset = lseek(fd_orig, 0, SEEK_END);
- current_arch_start = FcCacheNextOffset (offset);
- }
-
- if (fd_orig != -1 && !FcCacheCopyOld(fd, fd_orig, current_arch_start))
- goto bail4;
-
- if (fd_orig != -1)
- close (fd_orig);
-
- current_arch_start = lseek(fd, 0, SEEK_CUR);
-#if defined (HAVE_FTRUNCATE)
- if (ftruncate (fd, current_arch_start) == -1)
- goto bail4;
-#else
-#if defined (HAVE_CHSIZE)
- if (chsize (fd, current_arch_start) == -1)
- goto bail4;
-#else
- goto bail4;
-#endif
-#endif
-
- /* allocate space for subdir names in this block */
- dirs_count = 0;
- for (i = 0; i < dirs->size; i++)
- dirs_count += strlen((char *)dirs->strs[i]) + 1;
- dirs_count ++;
-
- /* now write the address of the next offset */
- truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + sizeof (FcCache) + dirs_count) + metadata.count) - current_arch_start;
- header = malloc (10 + strlen (current_arch_machine_name));
- if (!header)
- goto bail4;
- sprintf (header, "%8x ", (int)truncate_to);
- strcat (header, current_arch_machine_name);
- if (!FcCacheWriteString (fd, header))
- goto bail5;
-
+
+ /*
+ * Compute file header length -- the FcCache followed by the subdir names
+ */
+ header_len = sizeof (FcCache);
for (i = 0; i < dirs->size; i++)
- FcCacheWriteString (fd, (char *)dirs->strs[i]);
- FcCacheWriteString (fd, "");
-
+ header_len += strlen ((char *)dirs->strs[i]) + 1;
+
+ metadata.pos = FcCacheNextOffset (lseek (fd, 0, SEEK_CUR) + header_len);
+ metadata.subdirs = dirs->size;
+
+ /*
+ * Write out the header
+ */
if (write (fd, &metadata, sizeof(FcCache)) != sizeof(FcCache))
{
perror("write metadata");
goto bail5;
}
+
+ for (i = 0; i < dirs->size; i++)
+ FcCacheWriteString (fd, (char *)dirs->strs[i]);
+
if (metadata.count)
{
- off_t off = FcCacheNextOffset (lseek(fd, 0, SEEK_END));
- if (lseek (fd, off, SEEK_SET) != off)
+ if (lseek (fd, metadata.pos, SEEK_SET) != metadata.pos)
perror("lseek");
else if (write (fd, current_dir_block, metadata.count) !=
metadata.count)
current_dir_block = 0;
}
- /* this actually serves to pad out the cache file, if needed */
-#if defined (HAVE_FTRUNCATE)
- if (ftruncate (fd, current_arch_start + truncate_to) == -1)
- goto bail5;
-#else
-#if defined (HAVE_CHSIZE)
- if (chsize (fd, current_arch_start + truncate_to) == -1)
- goto bail5;
-#else
- goto bail5;
-#endif
-#endif
-
- free (header);
close(fd);
if (!FcAtomicReplaceOrig(atomic))
goto bail3;
return FcTrue;
bail5:
- free (header);
- bail4:
close (fd);
bail3:
FcAtomicUnlock (atomic);
return FcFalse;
}
-static char *
-FcCacheMachineSignature ()
-{
- static char buf[MACHINE_SIGNATURE_SIZE];
- int32_t magic = ENDIAN_TEST;
- char * m = (char *)&magic;
-
- sprintf (buf, "%2x%2x%2x%2x "
- "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x "
- "%4x %4x %4x %4x %4x %4x %4x %4x\n",
- m[0], m[1], m[2], m[3],
- (unsigned int)sizeof (char),
- (unsigned int)sizeof (char *),
- (unsigned int)sizeof (int),
- (unsigned int)sizeof (FcPattern),
- (unsigned int)sizeof (FcPatternEltPtr),
- (unsigned int)sizeof (struct _FcPatternElt *),
- (unsigned int)sizeof (FcPatternElt),
- (unsigned int)sizeof (FcObjectPtr),
- (unsigned int)sizeof (FcValueListPtr),
- (unsigned int)sizeof (FcValue),
- (unsigned int)sizeof (FcValueBinding),
- (unsigned int)sizeof (struct _FcValueList *),
- (unsigned int)sizeof (FcCharSet),
- (unsigned int)sizeof (FcCharLeaf **),
- (unsigned int)sizeof (FcChar16 *),
- (unsigned int)sizeof (FcChar16),
- (unsigned int)sizeof (FcCharLeaf),
- (unsigned int)sizeof (FcChar32),
- (unsigned int)sizeof (FcCache),
-#if defined (HAVE_SYSCONF)
- (unsigned int)sysconf(_SC_PAGESIZE));
-#else
- (unsigned int)FC_HARDCODED_PAGESIZE);
-#endif
-
- return buf;
-}
-
static int banks_ptr = 0, banks_alloc = 0;
int * _fcBankId = 0, * _fcBankIdx = 0;
static const char ** bankDirs = 0;
git.wh0rd.org / fontconfig.git / commitdiff
