author: Christoph Hellwig <hch@lst.de> 2017-09-01 17:39:13 +0200
committer: Al Viro <viro@zeniv.linux.org.uk> 2017-09-04 19:05:15 -0400
commit: bdd1d2d3d251c65b74ac4493e08db18971c09240
parent: c41fbad015dabb0a40ecca50c3ff5658eb6471ff
Commit Summary:
Diffstat:
1 file changed, 5 insertions, 13 deletions
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index a1e6860b6f46..afb7e9d521d2 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -176,19 +176,14 @@ static int create_flat_tables(struct linux_binprm *bprm, unsigned long arg_start
#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
#define RESERVED 0xC0 /* bit 6,7: reserved */
-static int decompress_exec(
- struct linux_binprm *bprm,
- unsigned long offset,
- char *dst,
- long len,
- int fd)
+static int decompress_exec(struct linux_binprm *bprm, loff_t fpos, char *dst,
+ long len, int fd)
{
unsigned char *buf;
z_stream strm;
- loff_t fpos;
int ret, retval;
- pr_debug("decompress_exec(offset=%lx,buf=%p,len=%lx)\n", offset, dst, len);
+ pr_debug("decompress_exec(offset=%llx,buf=%p,len=%lx)\n", fpos, dst, len);
memset(&strm, 0, sizeof(strm));
strm.workspace = kmalloc(zlib_inflate_workspacesize(), GFP_KERNEL);
@@ -204,13 +199,11 @@ static int decompress_exec(
}
/* Read in first chunk of data and parse gzip header. */
- fpos = offset;
- ret = kernel_read(bprm->file, offset, buf, LBUFSIZE);
+ ret = kernel_read(bprm->file, buf, LBUFSIZE, &fpos);
strm.next_in = buf;
strm.avail_in = ret;
strm.total_in = 0;
- fpos += ret;
retval = -ENOEXEC;
@@ -276,7 +269,7 @@ static int decompress_exec(
}
while ((ret = zlib_inflate(&strm, Z_NO_FLUSH)) == Z_OK) {
- ret = kernel_read(bprm->file, fpos, buf, LBUFSIZE);
+ ret = kernel_read(bprm->file, buf, LBUFSIZE, &fpos);
if (ret <= 0)
break;
len -= ret;
@@ -284,7 +277,6 @@ static int decompress_exec(
strm.next_in = buf;
strm.avail_in = ret;
strm.total_in = 0;
- fpos += ret;
}
if (ret < 0) {