* $RCSId: xc/lib/fontconfig/src/fccache.c,v 1.12 2002/08/22 07:36:44 keithp Exp $
*
* Copyright © 2000 Keith Packard
+ * Copyright © 2005 Patrick Lam
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
*/
#include <fcntl.h>
+#include <dirent.h>
#include <sys/mman.h>
#include <sys/utsname.h>
+#include <sys/types.h>
+#include <unistd.h>
#include "fcint.h"
-#define PAGESIZE 8192
+#define ENDIAN_TEST 0x12345678
+#define MACHINE_SIGNATURE_SIZE 9 + 5*19 + 1
+
+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, FcFontSet *set);
+
+FcBool
+FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir);
+
+static int
+FcCacheNextOffset(off_t w);
+
+static char *
+FcCacheMachineSignature (void);
+
+static FcBool
+FcCacheHaveBank (int bank);
-static FcBool force;
+#define FC_DBG_CACHE_REF 1024
-static FcChar8 *
-FcCacheReadString (int fd, FcChar8 *dest, int len)
+static char *
+FcCacheReadString (int fd, char *dest, int len)
{
FcChar8 c;
FcBool escape;
int i;
if (len == 0)
- return FcFalse;
+ return 0;
size = len;
i = 0;
}
static FcBool
-FcCacheWriteString (int fd, const FcChar8 *chars)
+FcCacheWriteString (int fd, const char *chars)
{
if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1)
return FcFalse;
return FcTrue;
}
-#if 0
-/*
- * Verify the saved timestamp for a file
- */
-FcBool
-FcGlobalCacheCheckTime (const FcChar8 *file, FcGlobalCacheInfo *info)
-{
- struct stat statb;
-
- if (stat ((char *) file, &statb) < 0)
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf (" file %s missing\n", file);
- return FcFalse;
- }
- if (statb.st_mtime != info->time)
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf (" timestamp mismatch (was %d is %d)\n",
- (int) info->time, (int) statb.st_mtime);
- return FcFalse;
- }
- return FcTrue;
-}
-
-void
-FcGlobalCacheReferenced (FcGlobalCache *cache,
- FcGlobalCacheInfo *info)
-{
- if (!info->referenced)
- {
- info->referenced = FcTrue;
- cache->referenced++;
- if (FcDebug () & FC_DBG_CACHE_REF)
- printf ("Reference %d %s\n", cache->referenced, info->file);
- }
-}
-
-/*
- * Break a path into dir/base elements and compute the base hash
- * and the dir length. This is shared between the functions
- * which walk the file caches
- */
-
-typedef struct _FcFilePathInfo {
- const FcChar8 *dir;
- int dir_len;
- const FcChar8 *base;
- unsigned int base_hash;
-} FcFilePathInfo;
-
-static FcFilePathInfo
-FcFilePathInfoGet (const FcChar8 *path)
+static void
+FcGlobalCacheDirDestroy (FcGlobalCacheDir *d)
{
- FcFilePathInfo i;
- FcChar8 *slash;
-
- slash = FcStrLastSlash (path);
- if (slash)
- {
- i.dir = path;
- i.dir_len = slash - path;
- if (!i.dir_len)
- i.dir_len = 1;
- i.base = slash + 1;
- }
- else
- {
- i.dir = (const FcChar8 *) ".";
- i.dir_len = 1;
- i.base = path;
- }
- i.base_hash = FcCacheHash (i.base, -1);
- return i;
+ FcMemFree (FC_MEM_STRING, strlen (d->name)+1);
+ free (d->name);
+ FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir));
+ free (d);
}
FcGlobalCache *
FcGlobalCacheCreate (void)
{
FcGlobalCache *cache;
- int h;
cache = malloc (sizeof (FcGlobalCache));
if (!cache)
return 0;
FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache));
- for (h = 0; h < FC_GLOBAL_CACHE_DIR_HASH_SIZE; h++)
- cache->ents[h] = 0;
- cache->entries = 0;
- cache->referenced = 0;
+ cache->dirs = 0;
cache->updated = FcFalse;
- cache->broken = FcFalse;
+ cache->fd = -1;
return cache;
}
FcGlobalCacheDestroy (FcGlobalCache *cache)
{
FcGlobalCacheDir *d, *next;
- int h;
- for (h = 0; h < FC_GLOBAL_CACHE_DIR_HASH_SIZE; h++)
+ for (d = cache->dirs; d; d = next)
{
- for (d = cache->ents[h]; d; d = next)
- {
- next = d->next;
- FcGlobalCacheDirDestroy (d);
- }
+ next = d->next;
+ FcGlobalCacheDirDestroy (d);
}
FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache));
free (cache);
}
-/*
- * Cache file syntax is quite simple:
- *
- * "file_name" id time "font_name" \n
- */
-
void
FcGlobalCacheLoad (FcGlobalCache *cache,
+ FcStrSet *staleDirs,
const FcChar8 *cache_file)
{
- FILE *f;
- FcChar8 file_buf[8192], *file;
- int id;
- time_t time;
- FcChar8 name_buf[8192], *name;
- FcGlobalCacheInfo *info;
-
- f = fopen ((char *) cache_file, "r");
- if (!f)
+ char name_buf[8192];
+ FcGlobalCacheDir *d, *next;
+ 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;
+
+ if (stat ((char *) cache_file, &cache_stat) < 0)
+ return;
+
+ cache->fd = open ((char *) cache_file, O_RDONLY);
+ if (cache->fd == -1)
return;
cache->updated = FcFalse;
- file = 0;
- name = 0;
- while ((file = FcCacheReadString (f, file_buf, sizeof (file_buf))) &&
- FcCacheReadInt (f, &id) &&
- FcCacheReadTime (f, &time) &&
- (name = FcCacheReadString (f, name_buf, sizeof (name_buf))))
+
+ current_arch_machine_name = FcCacheMachineSignature ();
+ current_arch_start = FcCacheSkipToArch(cache->fd,
+ current_arch_machine_name);
+ if (current_arch_start < 0)
+ goto bail0;
+
+ lseek (cache->fd, current_arch_start, SEEK_SET);
+ FcCacheReadString (cache->fd, candidate_arch_machine_name,
+ sizeof (candidate_arch_machine_name));
+ if (strlen(candidate_arch_machine_name) == 0)
+ goto bail0;
+
+ while (1)
{
- if (FcDebug () & FC_DBG_CACHEV)
- printf ("FcGlobalCacheLoad \"%s\" \"%20.20s\"\n", file, name);
- if (!FcStrCmp (name, FC_FONT_FILE_DIR))
- info = FcGlobalCacheDirAdd (cache, file, time, FcFalse, FcTrue);
- else
- info = FcGlobalCacheFileAdd (cache, file, id, time, name, FcFalse);
- if (!info)
- cache->broken = FcTrue;
- else
- cache->entries++;
- if (FcDebug () & FC_DBG_CACHE_REF)
- printf ("FcGlobalCacheLoad entry %d %s\n",
- cache->entries, file);
- if (file != file_buf)
- free (file);
- if (name != name_buf)
- free (name);
- file = 0;
- name = 0;
+ off_t targ;
+
+ FcCacheReadString (cache->fd, name_buf, sizeof (name_buf));
+ if (!strlen(name_buf))
+ break;
+
+ if (stat ((char *) name_buf, &dir_stat) < 0 ||
+ dir_stat.st_mtime > cache_stat.st_mtime)
+ {
+ FcCache md;
+
+ FcStrSetAdd (staleDirs, FcStrCopy ((FcChar8 *)name_buf));
+ read (cache->fd, &md, sizeof (FcCache));
+ lseek (cache->fd, FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + md.count, SEEK_SET);
+ 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->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;
}
- if (file && file != file_buf)
- free (file);
- if (name && name != name_buf)
- free (name);
- fclose (f);
+ return;
+
+ bail1:
+ for (d = cache->dirs; d; d = next)
+ {
+ next = d->next;
+ free (d);
+ }
+ cache->dirs = 0;
+ bail0:
+ close (cache->fd);
+ cache->fd = -1;
+ return;
+}
+
+FcBool
+FcGlobalCacheReadDir (FcFontSet *set, FcStrSet *dirs, FcGlobalCache * cache, const char *dir, FcConfig *config)
+{
+ FcGlobalCacheDir *d;
+ FcBool ret = FcFalse;
+
+ if (cache->fd == -1)
+ return FcFalse;
+
+ for (d = cache->dirs; d; d = d->next)
+ {
+ if (strncmp (d->name, dir, strlen(dir)) == 0)
+ {
+ lseek (cache->fd, d->offset, SEEK_SET);
+ if (!FcDirCacheConsume (cache->fd, set))
+ return FcFalse;
+ if (strcmp (d->name, dir) == 0)
+ ret = FcTrue;
+ }
+ }
+
+ return ret;
}
FcBool
FcGlobalCacheUpdate (FcGlobalCache *cache,
- const FcChar8 *file,
- int id,
- const FcChar8 *name)
+ const char *name,
+ FcFontSet *set)
{
- const FcChar8 *match;
- struct stat statb;
- FcGlobalCacheInfo *info;
+ FcGlobalCacheDir * d;
- match = file;
+ if (!set->nfont)
+ return FcTrue;
- if (stat ((char *) file, &statb) < 0)
- return FcFalse;
- if (S_ISDIR (statb.st_mode))
- info = FcGlobalCacheDirAdd (cache, file, statb.st_mtime,
- FcTrue, FcTrue);
- else
- info = FcGlobalCacheFileAdd (cache, file, id, statb.st_mtime,
- name, FcTrue);
- if (info)
+ for (d = cache->dirs; d; d = d->next)
{
- FcGlobalCacheReferenced (cache, info);
- cache->updated = FcTrue;
+ if (strcmp(d->name, name) == 0)
+ break;
}
- else
- cache->broken = FcTrue;
- return info != 0;
+
+ if (!d)
+ {
+ d = malloc (sizeof (FcGlobalCacheDir));
+ if (!d)
+ return FcFalse;
+ d->next = cache->dirs;
+ cache->dirs = d;
+ }
+
+ cache->updated = FcTrue;
+
+ d->name = (char *)FcStrCopy ((FcChar8 *)name);
+ d->ent = FcDirCacheProduce (set, &d->metadata);
+ d->offset = 0;
+ return FcTrue;
}
FcBool
FcGlobalCacheSave (FcGlobalCache *cache,
const FcChar8 *cache_file)
{
- FILE *f;
- int dir_hash, file_hash;
+ int fd, fd_orig;
FcGlobalCacheDir *dir;
- FcGlobalCacheFile *file;
FcAtomic *atomic;
+ off_t current_arch_start = 0, truncate_to;
+ char * current_arch_machine_name, * header;
- if (!cache->updated && cache->referenced == cache->entries)
+ if (!cache->updated)
return FcTrue;
- if (cache->broken)
- return FcFalse;
-
#if defined (HAVE_GETUID) && defined (HAVE_GETEUID)
/* Set-UID programs can't safely update the cache */
if (getuid () != geteuid ())
atomic = FcAtomicCreate (cache_file);
if (!atomic)
- goto bail0;
+ return FcFalse;
+
if (!FcAtomicLock (atomic))
goto bail1;
- f = fopen ((char *) FcAtomicNewFile(atomic), "w");
- if (!f)
+ fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT,
+ S_IRUSR | S_IWUSR);
+ if (fd == -1)
goto bail2;
- for (dir_hash = 0; dir_hash < FC_GLOBAL_CACHE_DIR_HASH_SIZE; dir_hash++)
+ fd_orig = open ((char *) FcAtomicOrigFile(atomic), O_RDONLY);
+
+ 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)
+ current_arch_start = FcCacheNextOffset (lseek(fd_orig, 0, SEEK_END));
+
+ if (!FcCacheCopyOld(fd, fd_orig, current_arch_start))
+ goto bail3;
+
+ close (fd_orig);
+ fd_orig = -1;
+
+ current_arch_start = lseek(fd, 0, SEEK_CUR);
+ if (ftruncate (fd, current_arch_start) == -1)
+ goto bail3;
+
+ 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)
{
- for (dir = cache->ents[dir_hash]; dir; dir = dir->next)
- {
- if (!dir->info.referenced)
- continue;
- if (!FcCacheWriteString (f, dir->info.file))
- goto bail4;
- if (PUTC (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteInt (f, 0))
- goto bail4;
- if (PUTC (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteTime (f, dir->info.time))
- goto bail4;
- if (PUTC (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteString (f, (FcChar8 *) FC_FONT_FILE_DIR))
- goto bail4;
- if (PUTC ('\n', f) == EOF)
- goto bail4;
-
- for (file_hash = 0; file_hash < FC_GLOBAL_CACHE_FILE_HASH_SIZE; file_hash++)
- {
- for (file = dir->ents[file_hash]; file; file = file->next)
- {
- if (!file->info.referenced)
- continue;
- if (!FcCacheWritePath (f, dir->info.file, file->info.file))
- goto bail4;
- if (PUTC (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteInt (f, file->id < 0 ? 0 : file->id))
- goto bail4;
- if (PUTC (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteTime (f, file->info.time))
- goto bail4;
- if (PUTC (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteString (f, file->name))
- goto bail4;
- if (PUTC ('\n', f) == EOF)
- goto bail4;
- }
- }
- }
+ truncate_to += strlen(dir->name) + 1;
+ truncate_to += sizeof (FcCache);
+ truncate_to = FcCacheNextOffset (current_arch_start + truncate_to);
+ truncate_to += dir->metadata.count;
}
+ truncate_to -= current_arch_start;
- if (fclose (f) == EOF)
- goto bail3;
+ sprintf (header, "%8x ", (int)truncate_to);
+ strcat (header, current_arch_machine_name);
+ if (!FcCacheWriteString (fd, header))
+ goto bail4;
+
+ for (dir = cache->dirs; dir; dir = dir->next)
+ {
+ if (dir->ent)
+ {
+ FcCacheWriteString (fd, dir->name);
+ write (fd, &dir->metadata, sizeof(FcCache));
+ lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)), SEEK_SET);
+ write (fd, dir->ent, dir->metadata.count);
+ free (dir->ent);
+ }
+ }
+ FcCacheWriteString (fd, "");
+
+ if (close (fd) == -1)
+ goto bail25;
if (!FcAtomicReplaceOrig (atomic))
- goto bail3;
+ goto bail25;
FcAtomicUnlock (atomic);
FcAtomicDestroy (atomic);
cache->updated = FcFalse;
return FcTrue;
-bail4:
- fclose (f);
-bail3:
+ bail4:
+ free (header);
+ bail3:
+ if (fd_orig != -1)
+ close (fd_orig);
+
+ close (fd);
+ bail25:
FcAtomicDeleteNew (atomic);
-bail2:
+ bail2:
FcAtomicUnlock (atomic);
-bail1:
+ bail1:
FcAtomicDestroy (atomic);
-bail0:
return FcFalse;
}
-#endif
+#define PAGESIZE 8192
/*
- * Find the next presumably-mmapable offset after the current file
- * pointer.
+ * Find the next presumably-mmapable offset after the supplied file
+ * position.
*/
-int
-FcCacheNextOffset(int fd)
+static int
+FcCacheNextOffset(off_t w)
{
- off_t w;
- w = lseek(fd, 0, SEEK_END);
-
if (w % PAGESIZE == 0)
return w;
else
return ((w / PAGESIZE)+1)*PAGESIZE;
}
-/* will go away once we use config->cache */
-#define CACHE_DEFAULT_TMPDIR "/tmp"
-#define CACHE_DEFAULT_NAME "/fontconfig-mmap"
-static char *
-FcCacheFilename(void)
-{
- struct utsname b;
- static char * name = 0;
-
- if (name)
- return name;
-
- if (uname(&b) == -1)
- name = CACHE_DEFAULT_NAME;
- else
- {
- char * tmpname = getenv("TMPDIR");
- char * logname = getenv("LOGNAME");
- if (!tmpname)
- tmpname = CACHE_DEFAULT_TMPDIR;
-
- name = malloc(strlen(CACHE_DEFAULT_NAME) +
- strlen(tmpname) +
- (logname ? strlen(logname) : 0) + 5);
- strcpy(name, tmpname);
- strcat(name, CACHE_DEFAULT_NAME);
- strcat(name, "-");
- strcat(name, logname ? logname : "");
- }
- return name;
-}
-
-/*
- * Wipe out static state.
- */
-void
-FcCacheClearStatic()
-{
- FcFontSetClearStatic();
- FcPatternClearStatic();
- FcValueListClearStatic();
- FcObjectClearStatic();
- FcMatrixClearStatic();
- FcCharSetClearStatic();
- FcLangSetClearStatic();
-}
-
-/*
- * Trigger the counting phase: this tells us how much to allocate.
- */
-FcBool
-FcCachePrepareSerialize (FcConfig * config)
-{
- int i;
- for (i = FcSetSystem; i <= FcSetApplication; i++)
- if (config->fonts[i] && !FcFontSetPrepareSerialize(config->fonts[i]))
- return FcFalse;
- return FcTrue;
-}
-
-/* allocate and populate static structures */
-FcBool
-FcCacheSerialize (FcConfig * config)
-{
- int i;
- for (i = FcSetSystem; i <= FcSetApplication; i++)
- if (config->fonts[i] && !FcFontSetSerialize(config->fonts[i]))
- return FcFalse;
- return FcTrue;
-}
-
-/* get the current arch name */
-/* caller is responsible for freeing returned pointer */
-static char *
-FcCacheGetCurrentArch (void)
-{
- struct utsname b;
- char * current_arch_machine_name;
-
- if (uname(&b) == -1)
- return FcFalse;
- current_arch_machine_name = strdup(b.machine);
- /* if (getenv ("FAKE_ARCH")) // testing purposes
- current_arch_machine_name = strdup(getenv("FAKE_ARCH")); */
- return current_arch_machine_name;
-}
-
/* 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[64], bytes_to_skip[7];
+ char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9];
+ char * candidate_arch;
off_t current_arch_start = 0;
/* skip arches that are not the current arch */
{
long bs;
- lseek (fd, current_arch_start, SEEK_SET);
- if (FcCacheReadString (fd, candidate_arch_machine_name,
- sizeof (candidate_arch_machine_name)) == 0)
- break;
- if (FcCacheReadString (fd, bytes_to_skip, 7) == 0)
- break;
- bs = a64l(bytes_to_skip);
- if (bs == 0)
- break;
+ if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start)
+ return -1;
- if (strcmp (candidate_arch_machine_name, arch)==0)
- break;
+ 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;
}
- if (strcmp (candidate_arch_machine_name, arch)!=0)
- return -1;
-
- return current_arch_start;
+ return -1;
}
/* 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. */
-#define BUF_SIZE 8192
-
static FcBool
-FcCacheMoveDown (int fd, off_t start)
+FcCacheCopyOld (int fd, int fd_orig, off_t start)
{
- char * buf = malloc (BUF_SIZE);
- char candidate_arch_machine_name[64], bytes_to_skip[7];
- long bs; off_t pos;
+ 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);
+ 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 (FcCacheReadString (fd, bytes_to_skip, 7) == 0)
+ if (!strlen(candidate_arch_machine_name))
goto done;
- bs = a64l(bytes_to_skip);
+ bs = strtol(candidate_arch_machine_name, 0, 16);
if (bs == 0)
goto done;
do
{
lseek (fd, start+bs+bytes_skipped, SEEK_SET);
- if ((c = read (fd, buf, BUF_SIZE)) <= 0)
+ if ((c = read (fd, buf, 8192)) <= 0)
break;
lseek (fd, start+bytes_skipped, SEEK_SET);
if (write (fd, buf, c) < 0)
return FcFalse;
}
+/* Does not check that the cache has the appropriate arch section. */
+FcBool
+FcDirCacheValid (const FcChar8 *dir)
+{
+ FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+ struct stat file_stat, dir_stat;
+
+ if (stat ((char *) dir, &dir_stat) < 0)
+ {
+ FcStrFree (cache_file);
+ return FcFalse;
+ }
+ if (stat ((char *) cache_file, &file_stat) < 0)
+ {
+ FcStrFree (cache_file);
+ return FcFalse;
+ }
+
+ FcStrFree (cache_file);
+ /*
+ * If the directory has been modified more recently than
+ * the cache file, the cache is not valid
+ */
+ if (dir_stat.st_mtime - file_stat.st_mtime > 0)
+ return FcFalse;
+ return FcTrue;
+}
+
+/* Assumes that the cache file in 'dir' exists.
+ * Checks that the cache has the appropriate arch section. */
+FcBool
+FcDirCacheHasCurrentArch (const FcChar8 *dir)
+{
+ FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+ int fd;
+ off_t current_arch_start;
+ char *current_arch_machine_name;
+
+ current_arch_machine_name = FcCacheMachineSignature();
+ fd = open ((char *)cache_file, O_RDONLY);
+ if (fd == -1)
+ return FcFalse;
+
+ current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
+ close (fd);
+
+ if (current_arch_start < 0)
+ return FcFalse;
+
+ return FcTrue;
+}
+
+FcBool
+FcDirCacheUnlink (const FcChar8 *dir)
+{
+ FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+
+ if (unlink ((char *)cache_file) != 0)
+ {
+ FcStrFree (cache_file);
+ return FcFalse;
+ }
+
+ FcStrFree (cache_file);
+ return FcTrue;
+}
+
+static int
+FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache,
+ FcStrList *list, FcFontSet * set)
+{
+ int ret = 0;
+ FcChar8 *dir;
+ FcChar8 *file, *base;
+ FcStrSet *subdirs;
+ FcStrList *sublist;
+ struct stat statb;
+
+ /*
+ * Read in the results from 'list'.
+ */
+ while ((dir = FcStrListNext (list)))
+ {
+ /* freed below */
+ file = (FcChar8 *) malloc (strlen ((char *) dir) + 1 + FC_MAX_FILE_LEN + 1);
+ if (!file)
+ return FcFalse;
+
+ strcpy ((char *) file, (char *) dir);
+ strcat ((char *) file, "/");
+ base = file + strlen ((char *) file);
+
+ subdirs = FcStrSetCreate ();
+ if (!subdirs)
+ {
+ fprintf (stderr, "Can't create directory set\n");
+ ret++;
+ free (file);
+ continue;
+ }
+
+ if (access ((char *) dir, X_OK) < 0)
+ {
+ switch (errno) {
+ case ENOENT:
+ case ENOTDIR:
+ case EACCES:
+ break;
+ default:
+ fprintf (stderr, "\"%s\": ", dir);
+ perror ("");
+ ret++;
+ }
+ FcStrSetDestroy (subdirs);
+ free (file);
+ continue;
+ }
+ if (stat ((char *) dir, &statb) == -1)
+ {
+ fprintf (stderr, "\"%s\": ", dir);
+ perror ("");
+ FcStrSetDestroy (subdirs);
+ ret++;
+ free (file);
+ continue;
+ }
+ if (!S_ISDIR (statb.st_mode))
+ {
+ fprintf (stderr, "\"%s\": not a directory, skipping\n", dir);
+ FcStrSetDestroy (subdirs);
+ free (file);
+ continue;
+ }
+ if (!FcDirCacheValid (dir) || !FcDirCacheRead (set, subdirs, dir))
+ {
+ if (FcDebug () & FC_DBG_FONTSET)
+ printf ("cache scan dir %s\n", dir);
+
+ FcDirScanConfig (set, subdirs, cache,
+ config->blanks, dir, FcFalse, config);
+ }
+ sublist = FcStrListCreate (subdirs);
+ FcStrSetDestroy (subdirs);
+ if (!sublist)
+ {
+ fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir);
+ ret++;
+ free (file);
+ continue;
+ }
+ ret += FcCacheReadDirs (config, cache, sublist, set);
+ free (file);
+ }
+ FcStrListDone (list);
+ return ret;
+}
+
+FcFontSet *
+FcCacheRead (FcConfig *config, FcGlobalCache * cache)
+{
+ FcFontSet * s = FcFontSetCreate();
+ if (!s)
+ return 0;
+
+ if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s))
+ goto bail;
+
+ return s;
+
+ bail:
+ FcFontSetDestroy (s);
+ return 0;
+}
+
/* read serialized state from the cache file */
FcBool
-FcCacheRead (FcConfig *config)
+FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir)
{
- int fd, i;
- FcCache metadata;
+ char *cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+ int fd;
char * current_arch_machine_name;
- char candidate_arch_machine_name[64], bytes_in_block[7];
+ char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
off_t current_arch_start = 0;
+ char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
- if (force)
- return FcFalse;
+ if (!cache_file)
+ goto bail;
- fd = open(FcCacheFilename(), O_RDONLY);
+ current_arch_machine_name = FcCacheMachineSignature();
+ fd = open(cache_file, O_RDONLY);
if (fd == -1)
- return FcFalse;
+ goto bail;
- current_arch_machine_name = FcCacheGetCurrentArch();
current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
if (current_arch_start < 0)
- goto bail;
+ goto bail1;
lseek (fd, current_arch_start, SEEK_SET);
if (FcCacheReadString (fd, candidate_arch_machine_name,
sizeof (candidate_arch_machine_name)) == 0)
- goto bail;
- if (FcCacheReadString (fd, bytes_in_block, 7) == 0)
- goto bail;
+ goto bail1;
- // sanity check for endianness issues
- read(fd, &metadata, sizeof(FcCache));
- if (metadata.magic != FC_CACHE_MAGIC)
- goto bail;
+ while (strlen(FcCacheReadString (fd, subdirName, sizeof (subdirName))) > 0)
+ FcStrSetAdd (dirs, (FcChar8 *)subdirName);
- if (!FcObjectRead(fd, metadata)) goto bail1;
- if (!FcStrSetRead(fd, metadata)) goto bail1;
- if (!FcCharSetRead(fd, metadata)) goto bail1;
- if (!FcMatrixRead(fd, metadata)) goto bail1;
- if (!FcLangSetRead(fd, metadata)) goto bail1;
- if (!FcValueListRead(fd, metadata)) goto bail1;
- if (!FcPatternEltRead(fd, metadata)) goto bail1;
- if (!FcPatternRead(fd, metadata)) goto bail1;
- if (!FcFontSetRead(fd, config, metadata)) goto bail1;
+ if (!FcDirCacheConsume (fd, set))
+ goto bail1;
+
close(fd);
- free (current_arch_machine_name);
+ free (cache_file);
return FcTrue;
bail1:
- for (i = FcSetSystem; i <= FcSetApplication; i++)
- config->fonts[i] = 0;
- close(fd);
+ close (fd);
bail:
- free (current_arch_machine_name);
+ free (cache_file);
return FcFalse;
}
-/* write serialized state to the cache file */
-FcBool
-FcCacheWrite (FcConfig * config)
+static FcBool
+FcDirCacheConsume (int fd, FcFontSet *set)
{
- int fd;
FcCache metadata;
- off_t current_arch_start = 0, truncate_to;
- char * current_arch_machine_name, bytes_written[7] = "dedbef";
+ void * current_dir_block;
+ off_t pos;
- if (!FcCachePrepareSerialize (config))
- return FcFalse;
+ read(fd, &metadata, sizeof(FcCache));
+ if (metadata.magic != FC_CACHE_MAGIC)
+ return FcFalse;
+
+ if (!metadata.count)
+ return FcTrue;
- if (!FcCacheSerialize (config))
+ pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
+ current_dir_block = mmap (0, metadata.count,
+ PROT_READ, MAP_SHARED, fd, pos);
+ if (current_dir_block == MAP_FAILED)
return FcFalse;
+
+ if (!FcFontSetUnserialize (metadata, set, current_dir_block))
+ return FcFalse;
+
+ return FcTrue;
+}
+
+static void *
+FcDirCacheProduce (FcFontSet *set, FcCache *metadata)
+{
+ void * current_dir_block, * final_dir_block;
+ static unsigned int rand_state = 0;
+ int bank;
+
+ if (!rand_state)
+ rand_state = time(0L);
+ bank = rand_r(&rand_state);
+
+ while (FcCacheHaveBank(bank))
+ bank = rand_r(&rand_state);
+
+ memset (metadata, 0, sizeof(FcCache));
+ FcFontSetNewBank();
+ metadata->count = FcFontSetNeededBytes (set);
+ metadata->magic = FC_CACHE_MAGIC;
+ metadata->bank = bank;
+
+ if (!metadata->count) /* not a failure, no fonts to write */
+ return 0;
+
+ current_dir_block = malloc (metadata->count);
+ if (!current_dir_block)
+ goto bail;
+ final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block);
+
+ if ((char *)current_dir_block + metadata->count != final_dir_block)
+ goto bail;
+
+ if (!FcFontSetSerialize (bank, set))
+ goto bail;
+
+ return current_dir_block;
- fd = open(FcCacheFilename(), O_RDWR | O_CREAT, 0666);
+ bail:
+ free (current_dir_block);
+ return 0;
+}
+
+/* write serialized state to the cache file */
+FcBool
+FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir)
+{
+ FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
+ int fd, fd_orig, i, dirs_count;
+ FcAtomic *atomic;
+ FcCache metadata;
+ off_t current_arch_start = 0, truncate_to;
+
+ char *current_arch_machine_name, * header;
+ void *current_dir_block;
+
+ if (!cache_file)
+ goto bail;
+
+ current_dir_block = FcDirCacheProduce (set, &metadata);
+
+ if (metadata.count && !current_dir_block)
+ goto bail0;
+
+ if (FcDebug () & FC_DBG_CACHE)
+ printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file);
+
+ atomic = FcAtomicCreate (cache_file);
+ if (!atomic)
+ goto bail0;
+
+ if (!FcAtomicLock (atomic))
+ goto bail1;
+
+ fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY, 0666);
+
+ fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT, 0666);
if (fd == -1)
- return FcFalse;
+ goto bail2;
+
+ current_arch_machine_name = FcCacheMachineSignature ();
+ current_arch_start = 0;
+
+ if (fd_orig != -1)
+ current_arch_start =
+ FcCacheSkipToArch(fd_orig, current_arch_machine_name);
- current_arch_machine_name = FcCacheGetCurrentArch();
- current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
if (current_arch_start < 0)
- current_arch_start = FcCacheNextOffset (fd);
+ current_arch_start = FcCacheNextOffset (lseek(fd_orig, 0, SEEK_END));
- if (!FcCacheMoveDown(fd, current_arch_start))
- goto bail;
+ if (fd_orig != -1 && !FcCacheCopyOld(fd, fd_orig, current_arch_start))
+ goto bail3;
+
+ if (fd_orig != -1)
+ close (fd_orig);
current_arch_start = lseek(fd, 0, SEEK_CUR);
if (ftruncate (fd, current_arch_start) == -1)
- goto bail;
+ goto bail3;
- /* reserve space for arch, count & metadata */
- if (!FcCacheWriteString (fd, current_arch_machine_name))
- goto bail;
- if (!FcCacheWriteString (fd, bytes_written))
- goto bail;
- memset (&metadata, 0, sizeof(FcCache));
- metadata.magic = FC_CACHE_MAGIC;
- write(fd, &metadata, sizeof(FcCache));
-
- if (!FcFontSetWrite(fd, config, &metadata)) goto bail;
- if (!FcPatternWrite(fd, &metadata)) goto bail;
- if (!FcPatternEltWrite(fd, &metadata)) goto bail;
- if (!FcValueListWrite(fd, &metadata)) goto bail;
- if (!FcLangSetWrite(fd, &metadata)) goto bail;
- if (!FcCharSetWrite(fd, &metadata)) goto bail;
- if (!FcMatrixWrite(fd, &metadata)) goto bail;
- if (!FcStrSetWrite(fd, &metadata)) goto bail;
- if (!FcObjectWrite(fd, &metadata)) goto bail;
+ /* 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(fd) - current_arch_start;
- lseek(fd, current_arch_start + strlen(current_arch_machine_name)+1,
- SEEK_SET);
- strcpy (bytes_written, l64a(truncate_to));
- if (!FcCacheWriteString (fd, bytes_written))
- goto bail;
+ 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 bail3;
+ sprintf (header, "%8x ", (int)truncate_to);
+ strcat (header, current_arch_machine_name);
+ if (!FcCacheWriteString (fd, header))
+ goto bail4;
- /* now rewrite metadata & truncate file */
- if (write(fd, &metadata, sizeof(FcCache)) != sizeof (FcCache))
- goto bail;
+ for (i = 0; i < dirs->size; i++)
+ FcCacheWriteString (fd, (char *)dirs->strs[i]);
+ FcCacheWriteString (fd, "");
+
+ write (fd, &metadata, sizeof(FcCache));
+ if (metadata.count)
+ {
+ lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_END)), SEEK_SET);
+ write (fd, current_dir_block, metadata.count);
+ free (current_dir_block);
+ }
+
+ /* this actually serves to pad out the cache file, if needed */
if (ftruncate (fd, current_arch_start + truncate_to) == -1)
- goto bail;
+ goto bail4;
close(fd);
+ if (!FcAtomicReplaceOrig(atomic))
+ goto bail4;
+ FcAtomicUnlock (atomic);
+ FcAtomicDestroy (atomic);
return FcTrue;
+ bail4:
+ free (header);
+ bail3:
+ close (fd);
+ bail2:
+ FcAtomicUnlock (atomic);
+ bail1:
+ FcAtomicDestroy (atomic);
+ bail0:
+ unlink ((char *)cache_file);
+ free (cache_file);
+ if (current_dir_block)
+ free (current_dir_block);
bail:
- free (current_arch_machine_name);
return FcFalse;
}
-/* if true, ignore the cache file */
-void
-FcCacheForce (FcBool f)
+static char *
+FcCacheMachineSignature ()
{
- force = f;
+ static char buf[MACHINE_SIGNATURE_SIZE];
+ int 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\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));
+
+ return buf;
+}
+
+static int banks_ptr = 0, banks_alloc = 0;
+static int * bankId = 0, * bankIdx = 0;
+
+static FcBool
+FcCacheHaveBank (int bank)
+{
+ int i;
+
+ if (bank < FC_BANK_FIRST)
+ return FcTrue;
+
+ for (i = 0; i < banks_ptr; i++)
+ if (bankId[i] == bank)
+ return FcTrue;
+
+ return FcFalse;
+}
+
+int
+FcCacheBankToIndex (int bank)
+{
+ int i, j;
+
+ for (i = 0; i < banks_ptr; i++)
+ if (bankId[bankIdx[i]] == bank)
+ {
+ int t = bankIdx[i];
+
+ for (j = i; j > 0; j--)
+ bankIdx[j] = bankIdx[j-1];
+ bankIdx[0] = t;
+ return t;
+ }
+
+ if (banks_ptr >= banks_alloc)
+ {
+ int * b, * bidx;
+ b = realloc (bankId, (banks_alloc + 4) * sizeof(int));
+ if (!b)
+ return -1;
+ bankId = b;
+
+ bidx = realloc (bankIdx, (banks_alloc + 4) * sizeof(int));
+ if (!bidx)
+ return -1;
+ bankIdx = bidx;
+
+ banks_alloc += 4;
+ }
+
+ i = banks_ptr++;
+ bankId[i] = bank;
+ bankIdx[i] = i;
+ return i;
}
git.wh0rd.org / fontconfig.git / blobdiff