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-rw-r--r--fs/proc/proc_sysctl.c4
-rw-r--r--include/linux/sysctl.h17
-rw-r--r--kernel/sysctl.c29
3 files changed, 11 insertions, 39 deletions
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index f667e8a..6ff9981 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -48,7 +48,7 @@ out:
static struct ctl_table *find_in_table(struct ctl_table *p, struct qstr *name)
{
int len;
- for ( ; p->ctl_name || p->procname; p++) {
+ for ( ; p->procname; p++) {
if (!p->procname)
continue;
@@ -218,7 +218,7 @@ static int scan(struct ctl_table_header *head, ctl_table *table,
void *dirent, filldir_t filldir)
{
- for (; table->ctl_name || table->procname; table++, (*pos)++) {
+ for (; table->procname; table++, (*pos)++) {
int res;
/* Can't do anything without a proc name */
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 82c32b8..7c4aabc 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -1005,8 +1005,8 @@ extern ctl_handler sysctl_ms_jiffies;
/*
* Register a set of sysctl names by calling register_sysctl_table
- * with an initialised array of struct ctl_table's. An entry with zero
- * ctl_name and NULL procname terminates the table. table->de will be
+ * with an initialised array of struct ctl_table's. An entry with
+ * NULL procname terminates the table. table->de will be
* set up by the registration and need not be initialised in advance.
*
* sysctl names can be mirrored automatically under /proc/sys. The
@@ -1019,24 +1019,11 @@ extern ctl_handler sysctl_ms_jiffies;
* under /proc; non-leaf nodes will be represented by directories. A
* null procname disables /proc mirroring at this node.
*
- * sysctl entries with a zero ctl_name will not be available through
- * the binary sysctl interface.
- *
* sysctl(2) can automatically manage read and write requests through
* the sysctl table. The data and maxlen fields of the ctl_table
* struct enable minimal validation of the values being written to be
* performed, and the mode field allows minimal authentication.
*
- * More sophisticated management can be enabled by the provision of a
- * strategy routine with the table entry. This will be called before
- * any automatic read or write of the data is performed.
- *
- * The strategy routine may return:
- * <0: Error occurred (error is passed to user process)
- * 0: OK - proceed with automatic read or write.
- * >0: OK - read or write has been done by the strategy routine, so
- * return immediately.
- *
* There must be a proc_handler routine for any terminal nodes
* mirrored under /proc/sys (non-terminals are handled by a built-in
* directory handler). Several default handlers are available to
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index f6dacc3..b6b6eb1 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1618,7 +1618,7 @@ int sysctl_perm(struct ctl_table_root *root, struct ctl_table *table, int op)
static void sysctl_set_parent(struct ctl_table *parent, struct ctl_table *table)
{
- for (; table->ctl_name || table->procname; table++) {
+ for (; table->procname; table++) {
table->parent = parent;
if (table->child)
sysctl_set_parent(table, table->child);
@@ -1650,11 +1650,11 @@ static struct ctl_table *is_branch_in(struct ctl_table *branch,
return NULL;
/* ... and nothing else */
- if (branch[1].procname || branch[1].ctl_name)
+ if (branch[1].procname)
return NULL;
/* table should contain subdirectory with the same name */
- for (p = table; p->procname || p->ctl_name; p++) {
+ for (p = table; p->procname; p++) {
if (!p->child)
continue;
if (p->procname && strcmp(p->procname, s) == 0)
@@ -1699,8 +1699,7 @@ static void try_attach(struct ctl_table_header *p, struct ctl_table_header *q)
*
* The members of the &struct ctl_table structure are used as follows:
*
- * ctl_name - This is the numeric sysctl value used by sysctl(2). The number
- * must be unique within that level of sysctl
+ * ctl_name - Dead
*
* procname - the name of the sysctl file under /proc/sys. Set to %NULL to not
* enter a sysctl file
@@ -1716,7 +1715,7 @@ static void try_attach(struct ctl_table_header *p, struct ctl_table_header *q)
*
* proc_handler - the text handler routine (described below)
*
- * strategy - the strategy routine (described below)
+ * strategy - Dead
*
* de - for internal use by the sysctl routines
*
@@ -1730,19 +1729,6 @@ static void try_attach(struct ctl_table_header *p, struct ctl_table_header *q)
* struct enable minimal validation of the values being written to be
* performed, and the mode field allows minimal authentication.
*
- * More sophisticated management can be enabled by the provision of a
- * strategy routine with the table entry. This will be called before
- * any automatic read or write of the data is performed.
- *
- * The strategy routine may return
- *
- * < 0 - Error occurred (error is passed to user process)
- *
- * 0 - OK - proceed with automatic read or write.
- *
- * > 0 - OK - read or write has been done by the strategy routine, so
- * return immediately.
- *
* There must be a proc_handler routine for any terminal nodes
* mirrored under /proc/sys (non-terminals are handled by a built-in
* directory handler). Several default handlers are available to
@@ -1769,13 +1755,13 @@ struct ctl_table_header *__register_sysctl_paths(
struct ctl_table_set *set;
/* Count the path components */
- for (npath = 0; path[npath].ctl_name || path[npath].procname; ++npath)
+ for (npath = 0; path[npath].procname; ++npath)
;
/*
* For each path component, allocate a 2-element ctl_table array.
* The first array element will be filled with the sysctl entry
- * for this, the second will be the sentinel (ctl_name == 0).
+ * for this, the second will be the sentinel (procname == 0).
*
* We allocate everything in one go so that we don't have to
* worry about freeing additional memory in unregister_sysctl_table.
@@ -1792,7 +1778,6 @@ struct ctl_table_header *__register_sysctl_paths(
for (n = 0; n < npath; ++n, ++path) {
/* Copy the procname */
new->procname = path->procname;
- new->ctl_name = path->ctl_name;
new->mode = 0555;
*prevp = new;