[PATCH 01/29] sysctl: remove impossible condition check
From: Eric W. Biederman <hidden>
Date: 2012-01-27 04:49:31
Also in:
linux-fsdevel, lkml
Subsystem:
filesystems (vfs and infrastructure), proc filesystem, proc sysctl, the rest · Maintainers:
Alexander Viro, Christian Brauner, Kees Cook, Joel Granados, Linus Torvalds
From: Lucas De Marchi <redacted> Remove checks for conditions that will never happen. If procname is NULL the loop would already had bailed out, so there's no need to check it again. At the same time this also compacts the function find_in_table() by refactoring it to be easier to read. Signed-off-by: Lucas De Marchi <redacted> Reviewed-by: Jesper Juhl <redacted> Signed-off-by: Eric W. Biederman <redacted> --- fs/proc/proc_sysctl.c | 14 ++------------ 1 files changed, 2 insertions(+), 12 deletions(-)
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index a6b6217..d82f4a8 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c@@ -59,17 +59,11 @@ out: static struct ctl_table *find_in_table(struct ctl_table *p, struct qstr *name) { - int len; for ( ; p->procname; p++) { - - if (!p->procname) - continue; - - len = strlen(p->procname); - if (len != name->len) + if (strlen(p->procname) != name->len) continue; - if (memcmp(p->procname, name->name, len) != 0) + if (memcmp(p->procname, name->name, name->len) != 0) continue; /* I have a match */
@@ -266,10 +260,6 @@ static int scan(struct ctl_table_header *head, ctl_table *table, for (; table->procname; table++, (*pos)++) { int res; - /* Can't do anything without a proc name */ - if (!table->procname) - continue; - if (*pos < file->f_pos) continue;
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1.7.2.5