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-rw-r--r--fontconfig/src/Makefile.am1
-rw-r--r--fontconfig/src/fcatomic.c10
-rw-r--r--fontconfig/src/fccache.c152
-rw-r--r--fontconfig/src/fcdir.c2
-rw-r--r--fontconfig/src/fcint.h26
-rw-r--r--fontconfig/src/fcstat.c308
6 files changed, 349 insertions, 150 deletions
diff --git a/fontconfig/src/Makefile.am b/fontconfig/src/Makefile.am
index 0bd0e3ded..65ec1e3bb 100644
--- a/fontconfig/src/Makefile.am
+++ b/fontconfig/src/Makefile.am
@@ -119,6 +119,7 @@ libfontconfig_la_SOURCES = \
fcname.c \
fcpat.c \
fcserialize.c \
+ fcstat.c \
fcstr.c \
fcxml.c \
ftglue.h \
diff --git a/fontconfig/src/fcatomic.c b/fontconfig/src/fcatomic.c
index b5f3d5aaa..96f01235f 100644
--- a/fontconfig/src/fcatomic.c
+++ b/fontconfig/src/fcatomic.c
@@ -131,6 +131,13 @@ FcAtomicLock (FcAtomic *atomic)
return FcFalse;
}
ret = link ((char *) atomic->tmp, (char *) atomic->lck);
+ if (ret < 0 && errno == EPERM)
+ {
+ /* the filesystem where atomic->lck points to may not supports
+ * the hard link. so better try to fallback
+ */
+ ret = mkdir ((char *) atomic->lck, 0600);
+ }
(void) unlink ((char *) atomic->tmp);
#else
ret = mkdir ((char *) atomic->lck, 0600);
@@ -196,7 +203,8 @@ void
FcAtomicUnlock (FcAtomic *atomic)
{
#ifdef HAVE_LINK
- unlink ((char *) atomic->lck);
+ if (unlink ((char *) atomic->lck) == -1)
+ rmdir ((char *) atomic->lck);
#else
rmdir ((char *) atomic->lck);
#endif
diff --git a/fontconfig/src/fccache.c b/fontconfig/src/fccache.c
index 22828820d..48fdbb55e 100644
--- a/fontconfig/src/fccache.c
+++ b/fontconfig/src/fccache.c
@@ -37,21 +37,6 @@
# include <unistd.h>
# include <sys/mman.h>
#endif
-#ifdef HAVE_SYS_VFS_H
-#include <sys/vfs.h>
-#endif
-#ifdef HAVE_SYS_STATFS_H
-#include <sys/statfs.h>
-#endif
-#ifdef HAVE_SYS_PARAM_H
-#include <sys/param.h>
-#endif
-#ifdef HAVE_SYS_MOUNT_H
-#include <sys/mount.h>
-#endif
-#ifdef HAVE_MNTENT_H
-#include <mntent.h>
-#endif
#ifndef O_BINARY
#define O_BINARY 0
@@ -71,98 +56,9 @@ static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]);
#define CACHEBASE_LEN (1 + 32 + 1 + sizeof (FC_ARCHITECTURE) + sizeof (FC_CACHE_SUFFIX))
-#ifdef _WIN32
-
-#include <windows.h>
-
-#ifdef __GNUC__
-typedef long long INT64;
-#define EPOCH_OFFSET 11644473600ll
-#else
-#define EPOCH_OFFSET 11644473600i64
-typedef __int64 INT64;
-#endif
-
-/* Workaround for problems in the stat() in the Microsoft C library:
- *
- * 1) stat() uses FindFirstFile() to get the file
- * attributes. Unfortunately this API doesn't return correct values
- * for modification time of a directory until some time after a file
- * or subdirectory has been added to the directory. (This causes
- * run-test.sh to fail, for instance.) GetFileAttributesEx() is
- * better, it returns the updated timestamp right away.
- *
- * 2) stat() does some strange things related to backward
- * compatibility with the local time timestamps on FAT volumes and
- * daylight saving time. This causes problems after the switches
- * to/from daylight saving time. See
- * http://bugzilla.gnome.org/show_bug.cgi?id=154968 , especially
- * comment #30, and http://www.codeproject.com/datetime/dstbugs.asp .
- * We don't need any of that, FAT and Win9x are as good as dead. So
- * just use the UTC timestamps from NTFS, converted to the Unix epoch.
- */
-
-int
-FcStat (const FcChar8 *file, struct stat *statb)
-{
- WIN32_FILE_ATTRIBUTE_DATA wfad;
- char full_path_name[MAX_PATH];
- char *basename;
- DWORD rc;
-
- if (!GetFileAttributesEx (file, GetFileExInfoStandard, &wfad))
- return -1;
-
- statb->st_dev = 0;
-
- /* Calculate a pseudo inode number as a hash of the full path name.
- * Call GetLongPathName() to get the spelling of the path name as it
- * is on disk.
- */
- rc = GetFullPathName (file, sizeof (full_path_name), full_path_name, &basename);
- if (rc == 0 || rc > sizeof (full_path_name))
- return -1;
-
- rc = GetLongPathName (full_path_name, full_path_name, sizeof (full_path_name));
- statb->st_ino = FcStringHash (full_path_name);
-
- statb->st_mode = _S_IREAD | _S_IWRITE;
- statb->st_mode |= (statb->st_mode >> 3) | (statb->st_mode >> 6);
-
- if (wfad.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
- statb->st_mode |= _S_IFDIR;
- else
- statb->st_mode |= _S_IFREG;
-
- statb->st_nlink = 1;
- statb->st_uid = statb->st_gid = 0;
- statb->st_rdev = 0;
-
- if (wfad.nFileSizeHigh > 0)
- return -1;
- statb->st_size = wfad.nFileSizeLow;
-
- statb->st_atime = (*(INT64 *)&wfad.ftLastAccessTime)/10000000 - EPOCH_OFFSET;
- statb->st_mtime = (*(INT64 *)&wfad.ftLastWriteTime)/10000000 - EPOCH_OFFSET;
- statb->st_ctime = statb->st_mtime;
-
- return 0;
-}
-
-#else
-
-int
-FcStat (const FcChar8 *file, struct stat *statb)
-{
- return stat ((char *) file, statb);
-}
-
-#endif
-
static FcBool
FcCacheIsMmapSafe (int fd)
{
- FcBool retval = FcTrue;
static FcBool is_initialized = FcFalse;
static FcBool is_env_available = FcFalse;
static FcBool use_mmap = FcFalse;
@@ -181,40 +77,8 @@ FcCacheIsMmapSafe (int fd)
}
if (is_env_available)
return use_mmap;
-#if defined(HAVE_FSTATVFS) && (defined(HAVE_STRUCT_STATVFS_F_BASETYPE) || defined(HAVE_STRUCT_STATVFS_F_FSTYPENAME))
- struct statvfs buf;
-
- if (fstatvfs (fd, &buf) == 0)
- {
- const char *p;
-#if defined(HAVE_STRUCT_STATVFS_F_BASETYPE)
- p = buf.f_basetype;
-#elif defined(HAVE_STRUCT_STATVFS_F_FSTYPENAME)
- p = buf.f_fstypename;
-#endif
-
- if (strcmp (p, "nfs") == 0)
- retval = FcFalse;
- }
-#elif defined(HAVE_FSTATFS) && (defined(HAVE_STRUCT_STATFS_F_FLAGS) || defined(HAVE_STRUCT_STATFS_F_FSTYPENAME) || defined(__linux__))
- struct statfs buf;
-
- if (fstatfs (fd, &buf) == 0)
- {
-# if defined(HAVE_STRUCT_STATFS_F_FLAGS) && defined(MNT_LOCAL)
- if (!(buf.f_flags & MNT_LOCAL))
-# elif defined(HAVE_STRUCT_STATFS_F_FSTYPENAME)
- if (strcmp (buf.f_fstypename, "nfs") == 0)
-# elif defined(__linux__)
- if (buf.f_type == 0x6969) /* nfs */
-# else
-# error "BUG: No way to figure out with fstatfs()"
-# endif
- retval = FcFalse;
- }
-#endif
- return retval;
+ return FcIsFsMmapSafe (fd);
}
static const char bin2hex[] = { '0', '1', '2', '3',
@@ -317,7 +181,7 @@ FcDirCacheProcess (FcConfig *config, const FcChar8 *dir,
struct stat file_stat, dir_stat;
FcBool ret = FcFalse;
- if (FcStat (dir, &dir_stat) < 0)
+ if (FcStatChecksum (dir, &dir_stat) < 0)
return FcFalse;
FcDirCacheBasename (dir, cache_base);
@@ -644,14 +508,14 @@ FcCacheTimeValid (FcCache *cache, struct stat *dir_stat)
if (!dir_stat)
{
- if (FcStat (FcCacheDir (cache), &dir_static) < 0)
+ if (FcStatChecksum (FcCacheDir (cache), &dir_static) < 0)
return FcFalse;
dir_stat = &dir_static;
}
if (FcDebug () & FC_DBG_CACHE)
- printf ("FcCacheTimeValid dir \"%s\" cache time %d dir time %d\n",
- FcCacheDir (cache), cache->mtime, (int) dir_stat->st_mtime);
- return cache->mtime == (int) dir_stat->st_mtime;
+ printf ("FcCacheTimeValid dir \"%s\" cache checksum %d dir checksum %d\n",
+ FcCacheDir (cache), cache->checksum, (int) dir_stat->st_mtime);
+ return cache->checksum == (int) dir_stat->st_mtime;
}
/*
@@ -815,7 +679,7 @@ FcDirCacheValidateHelper (int fd, struct stat *fd_stat, struct stat *dir_stat, v
ret = FcFalse;
else if (fd_stat->st_size != c.size)
ret = FcFalse;
- else if (c.mtime != (int) dir_stat->st_mtime)
+ else if (c.checksum != (int) dir_stat->st_mtime)
ret = FcFalse;
return ret;
}
@@ -890,7 +754,7 @@ FcDirCacheBuild (FcFontSet *set, const FcChar8 *dir, struct stat *dir_stat, FcSt
cache->magic = FC_CACHE_MAGIC_ALLOC;
cache->version = FC_CACHE_CONTENT_VERSION;
cache->size = serialize->size;
- cache->mtime = (int) dir_stat->st_mtime;
+ cache->checksum = (int) dir_stat->st_mtime;
/*
* Serialize directory name
diff --git a/fontconfig/src/fcdir.c b/fontconfig/src/fcdir.c
index 4399afc4a..2b476e8b9 100644
--- a/fontconfig/src/fcdir.c
+++ b/fontconfig/src/fcdir.c
@@ -245,7 +245,7 @@ FcDirCacheScan (const FcChar8 *dir, FcConfig *config)
if (FcDebug () & FC_DBG_FONTSET)
printf ("cache scan dir %s\n", dir);
- if (FcStat (dir, &dir_stat) < 0)
+ if (FcStatChecksum (dir, &dir_stat) < 0)
goto bail;
set = FcFontSetCreate();
diff --git a/fontconfig/src/fcint.h b/fontconfig/src/fcint.h
index 46562c4ca..8c42ff2d9 100644
--- a/fontconfig/src/fcint.h
+++ b/fontconfig/src/fcint.h
@@ -360,7 +360,7 @@ struct _FcCache {
intptr_t dirs; /* offset to subdirs */
int dirs_count; /* number of subdir strings */
intptr_t set; /* offset to font set */
- int mtime; /* low bits of directory mtime */
+ int checksum; /* checksum of directory state */
};
#undef FcCacheDir
@@ -541,6 +541,13 @@ struct _FcRange {
FcChar32 end;
};
+typedef struct _FcStatFS FcStatFS;
+
+struct _FcStatFS {
+ FcBool is_remote_fs;
+ FcBool is_mtime_broken;
+};
+
/* fcblanks.c */
/* fccache.c */
@@ -569,9 +576,6 @@ FcCacheFini (void);
FcPrivate void
FcDirCacheReference (FcCache *cache, int nref);
-FcPrivate int
-FcStat (const FcChar8 *file, struct stat *statb);
-
/* fccfg.c */
FcPrivate FcChar8 *
@@ -1022,6 +1026,20 @@ extern FcPrivate const FcMatrix FcIdentityMatrix;
FcPrivate void
FcMatrixFree (FcMatrix *mat);
+/* fcstat.c */
+
+FcPrivate int
+FcStat (const FcChar8 *file, struct stat *statb);
+
+FcPrivate int
+FcStatChecksum (const FcChar8 *file, struct stat *statb);
+
+FcPrivate FcBool
+FcIsFsMmapSafe (int fd);
+
+FcPrivate FcBool
+FcIsFsMtimeBroken (const FcChar8 *dir);
+
/* fcstr.c */
FcPrivate void
FcStrSetSort (FcStrSet * set);
diff --git a/fontconfig/src/fcstat.c b/fontconfig/src/fcstat.c
new file mode 100644
index 000000000..c2d9fe9ee
--- /dev/null
+++ b/fontconfig/src/fcstat.c
@@ -0,0 +1,308 @@
+/*
+ * 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
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the author(s) not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. The authors make no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "fcint.h"
+#include "fcarch.h"
+#include <dirent.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#ifdef HAVE_SYS_VFS_H
+#include <sys/vfs.h>
+#endif
+#ifdef HAVE_SYS_STATFS_H
+#include <sys/statfs.h>
+#endif
+#ifdef HAVE_SYS_PARAM_H
+#include <sys/param.h>
+#endif
+#ifdef HAVE_SYS_MOUNT_H
+#include <sys/mount.h>
+#endif
+
+#ifdef _WIN32
+
+#include <windows.h>
+
+#ifdef __GNUC__
+typedef long long INT64;
+#define EPOCH_OFFSET 11644473600ll
+#else
+#define EPOCH_OFFSET 11644473600i64
+typedef __int64 INT64;
+#endif
+
+/* Workaround for problems in the stat() in the Microsoft C library:
+ *
+ * 1) stat() uses FindFirstFile() to get the file
+ * attributes. Unfortunately this API doesn't return correct values
+ * for modification time of a directory until some time after a file
+ * or subdirectory has been added to the directory. (This causes
+ * run-test.sh to fail, for instance.) GetFileAttributesEx() is
+ * better, it returns the updated timestamp right away.
+ *
+ * 2) stat() does some strange things related to backward
+ * compatibility with the local time timestamps on FAT volumes and
+ * daylight saving time. This causes problems after the switches
+ * to/from daylight saving time. See
+ * http://bugzilla.gnome.org/show_bug.cgi?id=154968 , especially
+ * comment #30, and http://www.codeproject.com/datetime/dstbugs.asp .
+ * We don't need any of that, FAT and Win9x are as good as dead. So
+ * just use the UTC timestamps from NTFS, converted to the Unix epoch.
+ */
+
+int
+FcStat (const FcChar8 *file, struct stat *statb)
+{
+ WIN32_FILE_ATTRIBUTE_DATA wfad;
+ char full_path_name[MAX_PATH];
+ char *basename;
+ DWORD rc;
+
+ if (!GetFileAttributesEx (file, GetFileExInfoStandard, &wfad))
+ return -1;
+
+ statb->st_dev = 0;
+
+ /* Calculate a pseudo inode number as a hash of the full path name.
+ * Call GetLongPathName() to get the spelling of the path name as it
+ * is on disk.
+ */
+ rc = GetFullPathName (file, sizeof (full_path_name), full_path_name, &basename);
+ if (rc == 0 || rc > sizeof (full_path_name))
+ return -1;
+
+ rc = GetLongPathName (full_path_name, full_path_name, sizeof (full_path_name));
+ statb->st_ino = FcStringHash (full_path_name);
+
+ statb->st_mode = _S_IREAD | _S_IWRITE;
+ statb->st_mode |= (statb->st_mode >> 3) | (statb->st_mode >> 6);
+
+ if (wfad.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+ statb->st_mode |= _S_IFDIR;
+ else
+ statb->st_mode |= _S_IFREG;
+
+ statb->st_nlink = 1;
+ statb->st_uid = statb->st_gid = 0;
+ statb->st_rdev = 0;
+
+ if (wfad.nFileSizeHigh > 0)
+ return -1;
+ statb->st_size = wfad.nFileSizeLow;
+
+ statb->st_atime = (*(INT64 *)&wfad.ftLastAccessTime)/10000000 - EPOCH_OFFSET;
+ statb->st_mtime = (*(INT64 *)&wfad.ftLastWriteTime)/10000000 - EPOCH_OFFSET;
+ statb->st_ctime = statb->st_mtime;
+
+ return 0;
+}
+
+#else
+
+int
+FcStat (const FcChar8 *file, struct stat *statb)
+{
+ return stat ((char *) file, statb);
+}
+
+#endif
+
+/* Adler-32 checksum implementation */
+struct Adler32 {
+ int a;
+ int b;
+};
+
+static void
+Adler32Init (struct Adler32 *ctx)
+{
+ ctx->a = 1;
+ ctx->b = 0;
+}
+
+static void
+Adler32Update (struct Adler32 *ctx, const char *data, int data_len)
+{
+ while (data_len--)
+ {
+ ctx->a = (ctx->a + *data++) % 65521;
+ ctx->b = (ctx->b + ctx->a) % 65521;
+ }
+}
+
+static int
+Adler32Finish (struct Adler32 *ctx)
+{
+ return ctx->a + (ctx->b << 16);
+}
+
+/* dirent.d_type can be relied upon on FAT filesystem */
+static FcBool
+FcDirChecksumScandirFilter(const struct dirent *entry)
+{
+ return entry->d_type != DT_DIR;
+}
+
+static int
+FcDirChecksumScandirSorter(const struct dirent **lhs, const struct dirent **rhs)
+{
+ return strcmp((*lhs)->d_name, (*rhs)->d_name);
+}
+
+static int
+FcDirChecksum (const FcChar8 *dir, time_t *checksum)
+{
+ struct Adler32 ctx;
+ struct dirent **files;
+ int n;
+
+ Adler32Init (&ctx);
+
+ n = scandir ((const char *)dir, &files,
+ &FcDirChecksumScandirFilter,
+ &FcDirChecksumScandirSorter);
+ if (n == -1)
+ return -1;
+
+ while (n--)
+ {
+ Adler32Update (&ctx, files[n]->d_name, strlen(files[n]->d_name) + 1);
+ Adler32Update (&ctx, (char *)&files[n]->d_type, sizeof(files[n]->d_type));
+ free(files[n]);
+ }
+ free(files);
+
+ *checksum = Adler32Finish (&ctx);
+ return 0;
+}
+
+int
+FcStatChecksum (const FcChar8 *file, struct stat *statb)
+{
+ if (FcStat (file, statb) == -1)
+ return -1;
+
+ if (FcIsFsMtimeBroken (file))
+ {
+ if (FcDirChecksum (file, &statb->st_mtime) == -1)
+ return -1;
+ }
+
+ return 0;
+}
+
+static int
+FcFStatFs (int fd, FcStatFS *statb)
+{
+ const char *p = NULL;
+ int ret;
+ FcBool flag = FcFalse;
+
+ memset (statb, 0, sizeof (FcStatFS));
+
+#if defined(HAVE_FSTATVFS) && (defined(HAVE_STRUCT_STATVFS_F_BASETYPE) || defined(HAVE_STRUCT_STATVFS_F_FSTYPENAME))
+ struct statvfs buf;
+
+ if ((ret = fstatvfs (fd, &buf)) == 0)
+ {
+# if defined(HAVE_STRUCT_STATVFS_F_BASETYPE)
+ p = buf.f_basetype;
+# elif defined(HAVE_STRUCT_STATVFS_F_FSTYPENAME)
+ p = buf.f_fstypename;
+# endif
+ }
+#elif defined(HAVE_FSTATFS) && (defined(HAVE_STRUCT_STATFS_F_FLAGS) || defined(HAVE_STRUCT_STATFS_F_FSTYPENAME) || defined(__linux__))
+ struct statfs buf;
+
+ if ((ret = fstatfs (fd, &buf)) == 0)
+ {
+# if defined(HAVE_STRUCT_STATFS_F_FLAGS) && defined(MNT_LOCAL)
+ statb->is_remote_fs = !(buf.f_flags & MNT_LOCAL);
+ flag = FcTrue;
+# endif
+# if defined(HAVE_STRUCT_STATFS_F_FSTYPENAME)
+ p = buf.f_fstypename;
+# elif defined(__linux__)
+ switch (buf.f_type)
+ {
+ case 0x6969: /* nfs */
+ statb->is_remote_fs = FcTrue;
+ break;
+ case 0x4d44: /* fat */
+ statb->is_mtime_broken = FcTrue;
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+# else
+# error "BUG: No way to figure out with fstatfs()"
+# endif
+ }
+#endif
+ if (p)
+ {
+ if (!flag && strcmp (p, "nfs") == 0)
+ statb->is_remote_fs = FcTrue;
+ if (strcmp (p, "msdosfs") == 0 ||
+ strcmp (p, "pcfs") == 0)
+ statb->is_mtime_broken = FcTrue;
+ }
+
+ return ret;
+}
+
+FcBool
+FcIsFsMmapSafe (int fd)
+{
+ FcStatFS statb;
+
+ if (FcFStatFs (fd, &statb) < 0)
+ return FcTrue;
+
+ return !statb.is_remote_fs;
+}
+
+FcBool
+FcIsFsMtimeBroken (const FcChar8 *dir)
+{
+ int fd = open ((const char *) dir, O_RDONLY);
+
+ if (fd != -1)
+ {
+ FcStatFS statb;
+ int ret = FcFStatFs (fd, &statb);
+
+ close (fd);
+ if (ret < 0)
+ return FcFalse;
+
+ return statb.is_mtime_broken;
+ }
+
+ return FcFalse;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 13:53:48 +0000