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authorfaust3 <faust3@b3059339-0415-0410-9bf9-f77b7e298cf2>2004-03-26 15:21:44 +0000
committerfaust3 <faust3@b3059339-0415-0410-9bf9-f77b7e298cf2>2004-03-26 15:21:44 +0000
commitdc5c9fc570112125012eead3a6b1f025ad9c522d (patch)
tree822d40b5c52a89e3c3d91fe214ffe79ef5310282 /osdep
parentddfdfafaf6da97e88c76d8b956f80351621c2c3f (diff)
downloadmpv-dc5c9fc570112125012eead3a6b1f025ad9c522d.tar.bz2
mpv-dc5c9fc570112125012eead3a6b1f025ad9c522d.tar.xz
fseeko emulation patch by Steven M. Schultz <sms at 2bsd.com>
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@12072 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'osdep')
-rw-r--r--osdep/Makefile2
-rw-r--r--osdep/fseeko.c84
2 files changed, 85 insertions, 1 deletions
diff --git a/osdep/Makefile b/osdep/Makefile
index cc3ea85487..6460c0f7d1 100644
--- a/osdep/Makefile
+++ b/osdep/Makefile
@@ -3,7 +3,7 @@ include ../config.mak
LIBNAME = libosdep.a
-SRCS= shmem.c strsep.c vsscanf.c scandir.c gettimeofday.c # timer.c
+SRCS= shmem.c strsep.c vsscanf.c scandir.c gettimeofday.c fseeko.c # timer.c
ifeq ($(TARGET_ARCH_X86),yes)
ifeq ($(TARGET_OS),Linux)
diff --git a/osdep/fseeko.c b/osdep/fseeko.c
new file mode 100644
index 0000000000..14f601575a
--- /dev/null
+++ b/osdep/fseeko.c
@@ -0,0 +1,84 @@
+/*
+ * fseeko.c
+ * 64-bit versions of fseeko/ftello() for systems which do not have them
+ */
+
+#include "../config.h"
+
+#if !defined(HAVE_FSEEKO) || !defined(HAVE_FTELLO)
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+#endif
+
+#ifdef WIN32
+#define flockfile
+#define funlockfile
+#endif
+
+/*
+ * On BSD/OS and NetBSD (and perhaps others), off_t and fpos_t are the
+ * same. Standards say off_t is an arithmetic type, but not necessarily
+ * integral, while fpos_t might be neither.
+ *
+ * This is thread-safe on BSD/OS using flockfile/funlockfile.
+ */
+
+#ifndef HAVE_FSEEKO
+int
+fseeko(FILE *stream, off_t offset, int whence)
+{
+ off_t floc;
+ struct stat filestat;
+
+ switch (whence)
+ {
+ case SEEK_CUR:
+ flockfile(stream);
+ if (fgetpos(stream, &floc) != 0)
+ goto failure;
+ floc += offset;
+ if (fsetpos(stream, &floc) != 0)
+ goto failure;
+ funlockfile(stream);
+ return 0;
+ break;
+ case SEEK_SET:
+ if (fsetpos(stream, &offset) != 0)
+ return -1;
+ return 0;
+ break;
+ case SEEK_END:
+ flockfile(stream);
+ if (fstat(fileno(stream), &filestat) != 0)
+ goto failure;
+ floc = filestat.st_size;
+ if (fsetpos(stream, &floc) != 0)
+ goto failure;
+ funlockfile(stream);
+ return 0;
+ break;
+ default:
+ errno = EINVAL;
+ return -1;
+ }
+
+failure:
+ funlockfile(stream);
+ return -1;
+}
+#endif
+
+
+#ifndef HAVE_FTELLO
+off_t
+ftello(FILE *stream)
+{
+ off_t floc;
+
+ if (fgetpos(stream, &floc) != 0)
+ return -1;
+ return floc;
+}
+#endif