Commit 2dbdb824f0cfbf5f583e6b94aec753f276ed3368
2008-11-03T18:38:57
Add git_fsize to the os file API This permits us to get the size of an opened file. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61
diff --git a/include/git/os/unix.h b/include/git/os/unix.h
index 56f77b9..475fe13 100644
--- a/include/git/os/unix.h
+++ b/include/git/os/unix.h
@@ -26,11 +26,16 @@
#ifndef INCLUDE_git_os_abstraction_h__
#define INCLUDE_git_os_abstraction_h__
+/** Force 64 bit off_t size on POSIX. */
+#define _FILE_OFFSET_BITS 64
+
+#include <errno.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/types.h>
#include <time.h>
+#include <stdlib.h>
#include <string.h>
/**
@@ -96,6 +101,15 @@ GIT_EXTERN(int) git_fread(git_file fd, void *buf, size_t cnt);
GIT_EXTERN(int) git_fwrite(git_file fd, void *buf, size_t cnt);
/**
+ * Get the current size of an open file.
+ * @param fd open descriptor.
+ * @return
+ * - On success, >= 0, indicating the file size in bytes.
+ * - On error, <0.
+ */
+GIT_EXTERN(off_t) git_fsize(git_file fd);
+
+/**
* Close an open file descriptor.
* @param fd descriptor to close.
* @return
diff --git a/src/os/unix.c b/src/os/unix.c
index 767f20c..8a20884 100644
--- a/src/os/unix.c
+++ b/src/os/unix.c
@@ -23,7 +23,6 @@
* Boston, MA 02110-1301, USA.
*/
-#include <errno.h>
#include "git/common.h"
int git_fopen(git_file *out, const char *path, int flags)
@@ -74,3 +73,11 @@ int git_fwrite(git_file fd, void *buf, size_t cnt)
}
return GIT_SUCCESS;
}
+
+off_t git_fsize(git_file fd)
+{
+ struct stat sb;
+ if (fstat(fd, &sb))
+ return -1;
+ return sb.st_size;
+}