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| author | Vasily Gorbik <gor@linux.ibm.com> | 2018-06-24 12:28:46 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-07-06 08:47:53 +0200 |
| commit | 196851bed5221a7670024e3ad39704c6d92b2014 (patch) | |
| tree | fa2ee6a6ab285514eea75ae451ec8de29e475039 /arch/s390/mm/cmm.c | |
| parent | f149371e9e02d23495fc796c09075adeb376a375 (diff) | |
s390/topology: correct topology mode proc handler
Reuse proc_douintvec_minmax to simplify topology mode proc handler.
This also enforces correct range of 0-1 on proc writes and correctly
handles numbers starting with 0 or spaces.
Before:
$ echo 01 > /proc/sys/s390/topology
$ cat /proc/sys/s390/topology
0
$ echo ' 1' > /proc/sys/s390/topology
-bash: echo: write error: Invalid argument
$ echo 2 > /proc/sys/s390/topology
-bash: echo: write error: Invalid argument
$ echo 12 > /proc/sys/s390/topology
$ cat /proc/sys/s390/topology
1
After:
$ echo 01 > /proc/sys/s390/topology
$ cat /proc/sys/s390/topology
1
$ echo ' 1' > /proc/sys/s390/topology
$ cat /proc/sys/s390/topology
1
$ echo 2 > /proc/sys/s390/topology
-bash: echo: write error: Invalid argument
$ echo 12 > /proc/sys/s390/topology
-bash: echo: write error: Invalid argument
$ echo ' 0' > /proc/sys/s390/topology
$ cat /proc/sys/s390/topology
0
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/mm/cmm.c')
0 files changed, 0 insertions, 0 deletions