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-rw-r--r--fs/xfs/xfs_sysctl.c244
1 files changed, 244 insertions, 0 deletions
diff --git a/fs/xfs/xfs_sysctl.c b/fs/xfs/xfs_sysctl.c
new file mode 100644
index 000000000..546a6cd96
--- /dev/null
+++ b/fs/xfs/xfs_sysctl.c
@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2001-2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
+ */
+#include "xfs.h"
+#include "xfs_error.h"
+
+static struct ctl_table_header *xfs_table_header;
+
+#ifdef CONFIG_PROC_FS
+STATIC int
+xfs_stats_clear_proc_handler(
+ struct ctl_table *ctl,
+ int write,
+ void *buffer,
+ size_t *lenp,
+ loff_t *ppos)
+{
+ int ret, *valp = ctl->data;
+
+ ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
+
+ if (!ret && write && *valp) {
+ xfs_stats_clearall(xfsstats.xs_stats);
+ xfs_stats_clear = 0;
+ }
+
+ return ret;
+}
+
+STATIC int
+xfs_panic_mask_proc_handler(
+ struct ctl_table *ctl,
+ int write,
+ void *buffer,
+ size_t *lenp,
+ loff_t *ppos)
+{
+ int ret, *valp = ctl->data;
+
+ ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
+ if (!ret && write) {
+ xfs_panic_mask = *valp;
+#ifdef DEBUG
+ xfs_panic_mask |= (XFS_PTAG_SHUTDOWN_CORRUPT | XFS_PTAG_LOGRES);
+#endif
+ }
+ return ret;
+}
+#endif /* CONFIG_PROC_FS */
+
+STATIC int
+xfs_deprecated_dointvec_minmax(
+ struct ctl_table *ctl,
+ int write,
+ void *buffer,
+ size_t *lenp,
+ loff_t *ppos)
+{
+ if (write) {
+ printk_ratelimited(KERN_WARNING
+ "XFS: %s sysctl option is deprecated.\n",
+ ctl->procname);
+ }
+ return proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
+}
+
+static struct ctl_table xfs_table[] = {
+ {
+ .procname = "irix_sgid_inherit",
+ .data = &xfs_params.sgid_inherit.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = xfs_deprecated_dointvec_minmax,
+ .extra1 = &xfs_params.sgid_inherit.min,
+ .extra2 = &xfs_params.sgid_inherit.max
+ },
+ {
+ .procname = "irix_symlink_mode",
+ .data = &xfs_params.symlink_mode.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = xfs_deprecated_dointvec_minmax,
+ .extra1 = &xfs_params.symlink_mode.min,
+ .extra2 = &xfs_params.symlink_mode.max
+ },
+ {
+ .procname = "panic_mask",
+ .data = &xfs_params.panic_mask.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = xfs_panic_mask_proc_handler,
+ .extra1 = &xfs_params.panic_mask.min,
+ .extra2 = &xfs_params.panic_mask.max
+ },
+
+ {
+ .procname = "error_level",
+ .data = &xfs_params.error_level.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &xfs_params.error_level.min,
+ .extra2 = &xfs_params.error_level.max
+ },
+ {
+ .procname = "xfssyncd_centisecs",
+ .data = &xfs_params.syncd_timer.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &xfs_params.syncd_timer.min,
+ .extra2 = &xfs_params.syncd_timer.max
+ },
+ {
+ .procname = "inherit_sync",
+ .data = &xfs_params.inherit_sync.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &xfs_params.inherit_sync.min,
+ .extra2 = &xfs_params.inherit_sync.max
+ },
+ {
+ .procname = "inherit_nodump",
+ .data = &xfs_params.inherit_nodump.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &xfs_params.inherit_nodump.min,
+ .extra2 = &xfs_params.inherit_nodump.max
+ },
+ {
+ .procname = "inherit_noatime",
+ .data = &xfs_params.inherit_noatim.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &xfs_params.inherit_noatim.min,
+ .extra2 = &xfs_params.inherit_noatim.max
+ },
+ {
+ .procname = "inherit_nosymlinks",
+ .data = &xfs_params.inherit_nosym.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &xfs_params.inherit_nosym.min,
+ .extra2 = &xfs_params.inherit_nosym.max
+ },
+ {
+ .procname = "rotorstep",
+ .data = &xfs_params.rotorstep.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &xfs_params.rotorstep.min,
+ .extra2 = &xfs_params.rotorstep.max
+ },
+ {
+ .procname = "inherit_nodefrag",
+ .data = &xfs_params.inherit_nodfrg.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &xfs_params.inherit_nodfrg.min,
+ .extra2 = &xfs_params.inherit_nodfrg.max
+ },
+ {
+ .procname = "filestream_centisecs",
+ .data = &xfs_params.fstrm_timer.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &xfs_params.fstrm_timer.min,
+ .extra2 = &xfs_params.fstrm_timer.max,
+ },
+ {
+ .procname = "speculative_prealloc_lifetime",
+ .data = &xfs_params.blockgc_timer.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &xfs_params.blockgc_timer.min,
+ .extra2 = &xfs_params.blockgc_timer.max,
+ },
+ {
+ .procname = "speculative_cow_prealloc_lifetime",
+ .data = &xfs_params.blockgc_timer.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = xfs_deprecated_dointvec_minmax,
+ .extra1 = &xfs_params.blockgc_timer.min,
+ .extra2 = &xfs_params.blockgc_timer.max,
+ },
+ /* please keep this the last entry */
+#ifdef CONFIG_PROC_FS
+ {
+ .procname = "stats_clear",
+ .data = &xfs_params.stats_clear.val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = xfs_stats_clear_proc_handler,
+ .extra1 = &xfs_params.stats_clear.min,
+ .extra2 = &xfs_params.stats_clear.max
+ },
+#endif /* CONFIG_PROC_FS */
+
+ {}
+};
+
+static struct ctl_table xfs_dir_table[] = {
+ {
+ .procname = "xfs",
+ .mode = 0555,
+ .child = xfs_table
+ },
+ {}
+};
+
+static struct ctl_table xfs_root_table[] = {
+ {
+ .procname = "fs",
+ .mode = 0555,
+ .child = xfs_dir_table
+ },
+ {}
+};
+
+int
+xfs_sysctl_register(void)
+{
+ xfs_table_header = register_sysctl_table(xfs_root_table);
+ if (!xfs_table_header)
+ return -ENOMEM;
+ return 0;
+}
+
+void
+xfs_sysctl_unregister(void)
+{
+ unregister_sysctl_table(xfs_table_header);
+}