diff options
| author | Karel Zak | 2014-07-14 14:53:41 +0200 |
|---|---|---|
| committer | Karel Zak | 2014-07-14 15:05:22 +0200 |
| commit | 7c2cfb18964b00881e65c461742af9038bd5b287 (patch) | |
| tree | 03881cd0a38bab944fd9d84df86ce62f90dc1162 /libfdisk/src/fdiskP.h | |
| parent | build-sys: release++ (v2.25-rc2) (diff) | |
| download | kernel-qcow2-util-linux-7c2cfb18964b00881e65c461742af9038bd5b287.tar.gz kernel-qcow2-util-linux-7c2cfb18964b00881e65c461742af9038bd5b287.tar.xz kernel-qcow2-util-linux-7c2cfb18964b00881e65c461742af9038bd5b287.zip | |
libfdisk: make first sector buffer usage more robust
$ ~/util-linux/fdisk -b 4096 xxx
..
Segmentation fault
The buffer has to be reinitialized always when we apply a new
device properties (e.g. sector size).
Reported-by: Bernhard Voelker <mail@bernhard-voelker.de>
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'libfdisk/src/fdiskP.h')
| -rw-r--r-- | libfdisk/src/fdiskP.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libfdisk/src/fdiskP.h b/libfdisk/src/fdiskP.h index f5b4bb8ed..ea6e291b1 100644 --- a/libfdisk/src/fdiskP.h +++ b/libfdisk/src/fdiskP.h @@ -338,7 +338,9 @@ struct fdisk_ask { struct fdisk_context { int dev_fd; /* device descriptor */ char *dev_path; /* device path */ + unsigned char *firstsector; /* buffer with master boot record */ + unsigned long firstsector_bufsz; /* topology */ unsigned long io_size; /* I/O size used by fdisk */ @@ -418,7 +420,7 @@ extern int fdisk_apply_user_device_properties(struct fdisk_context *cxt); extern void fdisk_zeroize_device_properties(struct fdisk_context *cxt); /* utils.c */ -extern void fdisk_zeroize_firstsector(struct fdisk_context *cxt); +extern int fdisk_init_firstsector_buffer(struct fdisk_context *cxt); extern int fdisk_read_firstsector(struct fdisk_context *cxt); extern char *fdisk_partname(const char *dev, size_t partno); |