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authorDongHun Kwak <dh0128.kwak@samsung.com>2015-12-14 15:55:53 +0900
committerDongHun Kwak <dh0128.kwak@samsung.com>2015-12-14 16:17:37 +0900
commita8d964ee3ae1acc7d0a9ed43e5f1e363d26da090 (patch)
treee25c4e9b888d173b3109ffed48153499ee00c531 /src/system.c
parent02e836feb7a708522369a8fb46a3ade8688db655 (diff)
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sync with tizen 2.4 run unit test Change-Id: Iae1c58a660ee7dad0694163929e5b9940a0ec9c8 Signed-off-by: DongHun Kwak <dh0128.kwak@samsung.com>
Diffstat (limited to 'src/system.c')
-rw-r--r--src/system.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/src/system.c b/src/system.c
index e2d0431..70b746b 100644
--- a/src/system.c
+++ b/src/system.c
@@ -250,8 +250,25 @@ sys_compare_links (struct stat *link_data, struct stat *stat_data)
int
sys_truncate (int fd)
{
+ struct stat st;
off_t pos = lseek (fd, (off_t) 0, SEEK_CUR);
- return pos < 0 ? -1 : ftruncate (fd, pos);
+
+ if ( pos < 0)
+ return -1;
+
+ if ( ftruncate(fd, pos) && errno == EPERM ) {
+ /* wrapper around ftruncate:
+ * ftruncate may fail to grow the size of a file with some OS and filesystem
+ * combinations. Linux and vfat/fat is one example. If this is the case do
+ * a write to grow the file to the desired length.
+ */
+ if( (fstat( fd, &st ) == -1) ||
+ (st.st_size >= pos) ||
+ (lseek( fd, pos - 1, SEEK_SET) == (off_t)-1) ||
+ (write( fd, "\0", 1) == -1) )
+ return -1;
+ }
+ return 0;
}
/* Return nonzero if NAME is the name of a regular file, or if the file