diff options
| author | Fabian Frederick <fabf@skynet.be> | 2014-04-03 14:48:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-04-03 16:21:05 -0700 |
| commit | 6af9f7bf3c399e0ab1eee048e13572c6d4e15fe9 (patch) | |
| tree | 1d298fe98692134505d10f2d4d7fc0f9c6494ad1 | |
| parent | e3a0cfdc8c8904236f91a506c1e760b0d60dd918 (diff) | |
sys_sysfs: Add CONFIG_SYSFS_SYSCALL
sys_sysfs is an obsolete system call no longer supported by libc.
- This patch adds a default CONFIG_SYSFS_SYSCALL=y
- Option can be turned off in expert mode.
- cond_syscall added to kernel/sys_ni.c
[akpm@linux-foundation.org: tweak Kconfig help text]
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/filesystems.c | 2 | ||||
| -rw-r--r-- | init/Kconfig | 10 | ||||
| -rw-r--r-- | kernel/sys_ni.c | 1 |
3 files changed, 13 insertions, 0 deletions
diff --git a/fs/filesystems.c b/fs/filesystems.c index 92567d95ba6a..5797d45a78cb 100644 --- a/fs/filesystems.c +++ b/fs/filesystems.c @@ -121,6 +121,7 @@ int unregister_filesystem(struct file_system_type * fs) EXPORT_SYMBOL(unregister_filesystem); +#ifdef CONFIG_SYSFS_SYSCALL static int fs_index(const char __user * __name) { struct file_system_type * tmp; @@ -199,6 +200,7 @@ SYSCALL_DEFINE3(sysfs, int, option, unsigned long, arg1, unsigned long, arg2) } return retval; } +#endif int __init get_filesystem_list(char *buf) { diff --git a/init/Kconfig b/init/Kconfig index d56cb03c1b49..e45cc62904b3 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1290,6 +1290,16 @@ config UID16 help This enables the legacy 16-bit UID syscall wrappers. +config SYSFS_SYSCALL + bool "Sysfs syscall support" if EXPERT + default y + ---help--- + sys_sysfs is an obsolete system call no longer supported in libc. + Note that disabling this option is more secure but might break + compatibility with some systems. + + If unsure say Y here. + config SYSCTL_SYSCALL bool "Sysctl syscall support" if EXPERT depends on PROC_SYSCTL diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c index 7078052284fd..74395a95b7e9 100644 --- a/kernel/sys_ni.c +++ b/kernel/sys_ni.c @@ -146,6 +146,7 @@ cond_syscall(sys_io_destroy); cond_syscall(sys_io_submit); cond_syscall(sys_io_cancel); cond_syscall(sys_io_getevents); +cond_syscall(sys_sysfs); cond_syscall(sys_syslog); cond_syscall(sys_process_vm_readv); cond_syscall(sys_process_vm_writev); |