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Documentation: Fix size parameter for snprintf

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cppcheck reports this error:

Documentation/laptops/hpfall.c:33]: (error)
 Dangerous usage of 'devname' (strncpy doesn't always 0-terminate it)

The terminating '\0' is needed for the global char array unload_heads_path,
so never write the last array entry (which is initially '\0').

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Stefan Weil 2013-12-30 12:35:43 +01:00 committed by Jiri Kosina
parent e0ea041478
commit 6e641c943f
1 changed files with 1 additions and 1 deletions
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2
Documentation/laptops/hpfall.c
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@ -29,7 +29,7 @@ int set_unload_heads_path(char *device)
return -EINVAL;
strncpy(devname, device + 5, sizeof(devname));
snprintf(unload_heads_path, sizeof(unload_heads_path),
snprintf(unload_heads_path, sizeof(unload_heads_path) - 1,
"/sys/block/%s/device/unload_heads", devname);
return 0;
}