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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /fs/ntfs/sysctl.c | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'fs/ntfs/sysctl.c')
-rw-r--r-- | fs/ntfs/sysctl.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/fs/ntfs/sysctl.c b/fs/ntfs/sysctl.c new file mode 100644 index 000000000..a030d00af --- /dev/null +++ b/fs/ntfs/sysctl.c @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * sysctl.c - Code for sysctl handling in NTFS Linux kernel driver. Part of + * the Linux-NTFS project. Adapted from the old NTFS driver, + * Copyright (C) 1997 Martin von Löwis, Régis Duchesne + * + * Copyright (c) 2002-2005 Anton Altaparmakov + */ + +#ifdef DEBUG + +#include <linux/module.h> + +#ifdef CONFIG_SYSCTL + +#include <linux/proc_fs.h> +#include <linux/sysctl.h> + +#include "sysctl.h" +#include "debug.h" + +/* Definition of the ntfs sysctl. */ +static struct ctl_table ntfs_sysctls[] = { + { + .procname = "ntfs-debug", + .data = &debug_msgs, /* Data pointer and size. */ + .maxlen = sizeof(debug_msgs), + .mode = 0644, /* Mode, proc handler. */ + .proc_handler = proc_dointvec + }, + {} +}; + +/* Define the parent directory /proc/sys/fs. */ +static struct ctl_table sysctls_root[] = { + { + .procname = "fs", + .mode = 0555, + .child = ntfs_sysctls + }, + {} +}; + +/* Storage for the sysctls header. */ +static struct ctl_table_header *sysctls_root_table; + +/** + * ntfs_sysctl - add or remove the debug sysctl + * @add: add (1) or remove (0) the sysctl + * + * Add or remove the debug sysctl. Return 0 on success or -errno on error. + */ +int ntfs_sysctl(int add) +{ + if (add) { + BUG_ON(sysctls_root_table); + sysctls_root_table = register_sysctl_table(sysctls_root); + if (!sysctls_root_table) + return -ENOMEM; + } else { + BUG_ON(!sysctls_root_table); + unregister_sysctl_table(sysctls_root_table); + sysctls_root_table = NULL; + } + return 0; +} + +#endif /* CONFIG_SYSCTL */ +#endif /* DEBUG */ |