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mdopen: Prevent overrunning the devname buffer when copying devnm into it for long md names. 

Linux allows for 32 character device names. When using the maximum
size device name and also storing "/dev/", devname needs to be 37
character long to store the complete device name.
i.e. "/dev/md_abcdefghijklmnopqrstuvwxyz12\0"

Signed-off-by: Robert LeBlanc<robert@leblancnet.us>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
This commit is contained in:
Robert LeBlanc 2016-08-24 10:10:44 -06:00 committed by Jes Sorensen
parent 6e88b3b3e5
commit bd1fd72e13
1 changed files with 1 additions and 1 deletions
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2
mdopen.c
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@ -144,7 +144,7 @@ int create_mddev(char *dev, char *name, int autof, int trustworthy,
struct createinfo *ci = conf_get_create_info();
int parts;
char *cname;
char devname[20];
char devname[37];
char devnm[32];
char cbuf[400];
if (chosen == NULL)