From a8322df38cbc72dddb3177cab3cef9f5bb521f08 Mon Sep 17 00:00:00 2001
From: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Date: Sun, 15 Sep 2019 20:47:09 +0200
Subject: Fix: work out the *current* file size when opening a file
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
---
lib/sqfs/io_file.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
(limited to 'lib/sqfs')
diff --git a/lib/sqfs/io_file.c b/lib/sqfs/io_file.c
index b57eddd..bb5ef48 100644
--- a/lib/sqfs/io_file.c
+++ b/lib/sqfs/io_file.c
@@ -10,6 +10,7 @@
#include "sqfs/io.h"
#include "sqfs/error.h"
+#include <sys/stat.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
@@ -111,6 +112,7 @@ sqfs_file_t *sqfs_open_file(const char *filename, int flags)
sqfs_file_stdio_t *file;
int open_mode, temp;
sqfs_file_t *base;
+ struct stat sb;
if (flags & ~SQFS_FILE_OPEN_ALL_FLAGS) {
errno = EINVAL;
@@ -142,6 +144,16 @@ sqfs_file_t *sqfs_open_file(const char *filename, int flags)
return NULL;
}
+ if (fstat(file->fd, &sb)) {
+ temp = errno;
+ close(file->fd);
+ free(file);
+ errno = temp;
+ return NULL;
+ }
+
+ file->size = sb.st_size;
+
base->destroy = stdio_destroy;
base->read_at = stdio_read_at;
base->write_at = stdio_write_at;
--
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