korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-11 21:38:32 +08:00
Code Issues Packages Projects Releases Wiki Activity

selinuxfs: use scnprintf to get real length for inode

Browse Source 
The return value of snprintf maybe over the size of TMPBUFLEN, use
scnprintf instead in sel_read_class and sel_read_perm.

Signed-off-by: liuyang34 <liuyang34@xiaomi.com>
[PM: cleaned up the description]
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
liuyang34 2020-01-07 09:39:18 +08:00 committed by Paul Moore
parent f126853402
commit 7e78c87514
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
security/selinux/selinuxfs.c
View File

@ -1728,7 +1728,7 @@ static ssize_t sel_read_class(struct file *file, char __user *buf,
{
unsigned long ino = file_inode(file)->i_ino;
char res[TMPBUFLEN];
ssize_t len = snprintf(res, sizeof(res), "%d", sel_ino_to_class(ino));
ssize_t len = scnprintf(res, sizeof(res), "%d", sel_ino_to_class(ino));
return simple_read_from_buffer(buf, count, ppos, res, len);
}
@ -1742,7 +1742,7 @@ static ssize_t sel_read_perm(struct file *file, char __user *buf,
{
unsigned long ino = file_inode(file)->i_ino;
char res[TMPBUFLEN];
ssize_t len = snprintf(res, sizeof(res), "%d", sel_ino_to_perm(ino));
ssize_t len = scnprintf(res, sizeof(res), "%d", sel_ino_to_perm(ino));
return simple_read_from_buffer(buf, count, ppos, res, len);
}