| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Fri, 12 Aug 2011 18:42:56 +0200
From: Lukas Czerner <lczerner@...hat.com>
To: linux-ext4@...r.kernel.org
Cc: tytso@....edu, adilger@...ger.ca,
Lukas Czerner <lczerner@...hat.com>
Subject: [PATCH 1/5 v2] e2fsprogs: create open() and stat() helpers
In many places we are using #ifdef HAVE_OPEN64 to determine if we can
use open64() but that's ugly. This commit creates two new helpers
ext2fs_open_file() for open() and ext2fs_stat() for stat(). Also we need
new typedef ext2fs_struct_stat for struct stat.
Signed-off-by: Lukas Czerner <lczerner@...hat.com>
---
v2: This is the actually the first version of the patch
lib/ext2fs/ext2fs.h | 38 ++++++++++++++++++++++++++++++++++++++
lib/ext2fs/getsectsize.c | 12 ++----------
lib/ext2fs/getsize.c | 6 +-----
lib/ext2fs/unix_io.c | 10 +++-------
misc/e2image.c | 18 +++---------------
misc/util.c | 10 ++--------
resize/main.c | 6 +-----
7 files changed, 50 insertions(+), 50 deletions(-)
diff --git a/lib/ext2fs/ext2fs.h b/lib/ext2fs/ext2fs.h
index dc83fb0..bf61b37 100644
--- a/lib/ext2fs/ext2fs.h
+++ b/lib/ext2fs/ext2fs.h
@@ -584,6 +584,12 @@ typedef struct ext2_icount *ext2_icount_t;
#define EXT2FS_NUM_B2C(fs, blks) (((blks) + EXT2FS_CLUSTER_MASK(fs)) >> \
(fs)->cluster_ratio_bits)
+#ifdef HAVE_OPEN64
+typedef struct stat64 ext2fs_struct_stat;
+#else
+typedef struct stat ext2fs_struct_stat;
+#endif
+
/*
* function prototypes
*/
@@ -1388,6 +1394,8 @@ extern blk_t ext2fs_inode_data_blocks(ext2_filsys fs,
struct ext2_inode *inode);
extern unsigned int ext2fs_div_ceil(unsigned int a, unsigned int b);
extern __u64 ext2fs_div64_ceil(__u64 a, __u64 b);
+extern int ext2fs_open_file(const char *pathname, int flags, ...);
+extern int ext2fs_stat(const char *path, ext2fs_struct_stat *buf);
/*
* The actual inlined functions definitions themselves...
@@ -1638,6 +1646,36 @@ _INLINE_ __u64 ext2fs_div64_ceil(__u64 a, __u64 b)
return ((a - 1) / b) + 1;
}
+_INLINE_ int ext2fs_open_file(const char *pathname, int flags, ...)
+{
+ va_list args;
+ mode_t mode;
+
+ va_start(args, flags);
+ mode = va_arg(args, mode_t);
+ va_end(args);
+
+ if (mode)
+#ifdef HAVE_OPEN64
+ return open64(pathname, flags, mode);
+ else
+ return open64(pathname, flags);
+#else
+ return open(pathname, flags, mode);
+ else
+ return open(pathname, flags);
+#endif
+}
+
+_INLINE_ int ext2fs_stat(const char *path, ext2fs_struct_stat *buf)
+{
+#ifdef HAVE_OPEN64
+ return stat64(path, buf);
+#else
+ return open(path, buf);
+#endif
+}
+
#undef _INLINE_
#endif
diff --git a/lib/ext2fs/getsectsize.c b/lib/ext2fs/getsectsize.c
index 64f42a6..f129be1 100644
--- a/lib/ext2fs/getsectsize.c
+++ b/lib/ext2fs/getsectsize.c
@@ -45,11 +45,7 @@ errcode_t ext2fs_get_device_sectsize(const char *file, int *sectsize)
{
int fd;
-#ifdef HAVE_OPEN64
- fd = open64(file, O_RDONLY);
-#else
- fd = open(file, O_RDONLY);
-#endif
+ fd = ext2fs_open_file(file, O_RDONLY);
if (fd < 0)
return errno;
@@ -71,11 +67,7 @@ errcode_t ext2fs_get_device_phys_sectsize(const char *file, int *sectsize)
{
int fd;
-#ifdef HAVE_OPEN64
- fd = open64(file, O_RDONLY);
-#else
- fd = open(file, O_RDONLY);
-#endif
+ fd = ext2fs_open_file(file, O_RDONLY);
if (fd < 0)
return errno;
diff --git a/lib/ext2fs/getsize.c b/lib/ext2fs/getsize.c
index 0c91b5b..41da6b9 100644
--- a/lib/ext2fs/getsize.c
+++ b/lib/ext2fs/getsize.c
@@ -159,11 +159,7 @@ errcode_t ext2fs_get_device_size2(const char *file, int blocksize,
char ch;
#endif /* HAVE_SYS_DISKLABEL_H */
-#ifdef HAVE_OPEN64
- fd = open64(file, O_RDONLY);
-#else
- fd = open(file, O_RDONLY);
-#endif
+ fd = ext2fs_open_file(file, O_RDONLY);
if (fd < 0)
return errno;
diff --git a/lib/ext2fs/unix_io.c b/lib/ext2fs/unix_io.c
index c1d0561..21a273d 100644
--- a/lib/ext2fs/unix_io.c
+++ b/lib/ext2fs/unix_io.c
@@ -441,7 +441,7 @@ static errcode_t unix_open(const char *name, int flags, io_channel *channel)
struct unix_private_data *data = NULL;
errcode_t retval;
int open_flags, zeroes = 0;
- struct stat st;
+ ext2fs_struct_stat st;
#ifdef __linux__
struct utsname ut;
#endif
@@ -482,11 +482,7 @@ static errcode_t unix_open(const char *name, int flags, io_channel *channel)
#endif
data->flags = flags;
-#ifdef HAVE_OPEN64
- data->dev = open64(io->name, open_flags);
-#else
- data->dev = open(io->name, open_flags);
-#endif
+ data->dev = ext2fs_open_file(io->name, open_flags);
if (data->dev < 0) {
retval = errno;
goto cleanup;
@@ -552,7 +548,7 @@ static errcode_t unix_open(const char *name, int flags, io_channel *channel)
(ut.release[2] == '4') && (ut.release[3] == '.') &&
(ut.release[4] == '1') && (ut.release[5] >= '0') &&
(ut.release[5] < '8')) &&
- (fstat(data->dev, &st) == 0) &&
+ (ext2fs_stat(io->name, &st) == 0) &&
(S_ISBLK(st.st_mode))) {
struct rlimit rlim;
diff --git a/misc/e2image.c b/misc/e2image.c
index 83a9d02..ca6fd41 100644
--- a/misc/e2image.c
+++ b/misc/e2image.c
@@ -1176,11 +1176,7 @@ static void install_image(char *device, char *image_fn, int type)
exit(1);
}
-#ifdef HAVE_OPEN64
- fd = open64(image_fn, O_RDONLY);
-#else
- fd = open(image_fn, O_RDONLY);
-#endif
+ fd = ext2fs_open_file(image_fn, O_RDONLY);
if (fd < 0) {
perror(image_fn);
exit(1);
@@ -1212,11 +1208,7 @@ static void install_image(char *device, char *image_fn, int type)
static struct ext2_qcow2_hdr *check_qcow2_image(int *fd, char *name)
{
-#ifdef HAVE_OPEN64
- *fd = open64(name, O_RDONLY, 0600);
-#else
- *fd = open(name, O_RDONLY, 0600);
-#endif
+ *fd = ext2fs_open_file(name, O_RDONLY, 0600);
if (*fd < 0)
return NULL;
@@ -1300,11 +1292,7 @@ skip_device:
if (strcmp(image_fn, "-") == 0)
fd = 1;
else {
-#ifdef HAVE_OPEN64
- fd = open64(image_fn, O_CREAT|O_TRUNC|O_WRONLY, 0600);
-#else
- fd = open(image_fn, O_CREAT|O_TRUNC|O_WRONLY, 0600);
-#endif
+ fd = ext2fs_open_file(image_fn, O_CREAT|O_TRUNC|O_WRONLY, 0600);
if (fd < 0) {
com_err(program_name, errno,
_("while trying to open %s"), argv[optind+1]);
diff --git a/misc/util.c b/misc/util.c
index 51bdb60..cd78b00 100644
--- a/misc/util.c
+++ b/misc/util.c
@@ -79,15 +79,9 @@ void proceed_question(void)
void check_plausibility(const char *device)
{
int val;
-#ifdef HAVE_OPEN64
- struct stat64 s;
+ ext2fs_struct_stat s;
- val = stat64(device, &s);
-#else
- struct stat s;
-
- val = stat(device, &s);
-#endif
+ val = ext2fs_stat(device, &s);
if(val == -1) {
fprintf(stderr, _("Could not stat %s --- %s\n"),
diff --git a/resize/main.c b/resize/main.c
index 28a49ba..daa68c5 100644
--- a/resize/main.c
+++ b/resize/main.c
@@ -256,11 +256,7 @@ int main (int argc, char ** argv)
len = 2 * len;
}
-#ifdef HAVE_OPEN64
- fd = open64(device_name, O_RDWR);
-#else
- fd = open(device_name, O_RDWR);
-#endif
+ fd = ext2fs_open_file(device_name, O_RDWR);
if (fd < 0) {
com_err("open", errno, _("while opening %s"),
device_name);
--
1.7.4.4
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists