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Add git_fsize to the os file API

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This permits us to get the size of an opened file.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This commit is contained in:
Shawn O. Pearce 2008-11-03 18:38:57 -08:00
parent 3e9e69098a
commit 2dbdb824f0
2 changed files with 22 additions and 1 deletions
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14
include/git/os/unix.h
View File

@ -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>
/**
@ -95,6 +100,15 @@ 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.

9
src/os/unix.c
View File

@ -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;
}