Subject: + sys_sysfs-add-config_sysfs_syscall.patch added to -mm tree
To: fabf@xxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Thu, 13 Feb 2014 14:20:27 -0800
The patch titled
Subject: sys_sysfs: Add CONFIG_SYSFS_SYSCALL
has been added to the -mm tree. Its filename is
sys_sysfs-add-config_sysfs_syscall.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/sys_sysfs-add-config_sysfs_syscall.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/sys_sysfs-add-config_sysfs_syscall.patch
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------------------------------------------------------
From: Fabian Frederick <fabf@xxxxxxxxx>
Subject: 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
Signed-off-by: Fabian Frederick <fabf@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/filesystems.c | 2 ++
init/Kconfig | 10 ++++++++++
kernel/sys_ni.c | 1 +
3 files changed, 13 insertions(+)
diff -puN fs/filesystems.c~sys_sysfs-add-config_sysfs_syscall fs/filesystems.c
--- a/fs/filesystems.c~sys_sysfs-add-config_sysfs_syscall
+++ a/fs/filesystems.c
@@ -121,6 +121,7 @@ int unregister_filesystem(struct file_sy
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, unsi
}
return retval;
}
+#endif
int __init get_filesystem_list(char *buf)
{
diff -puN init/Kconfig~sys_sysfs-add-config_sysfs_syscall init/Kconfig
--- a/init/Kconfig~sys_sysfs-add-config_sysfs_syscall
+++ a/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 while being more secure breaks
+ compatibility with other systems.
+
+ If unsure say Y here.
+
config SYSCTL_SYSCALL
bool "Sysctl syscall support" if EXPERT
depends on PROC_SYSCTL
diff -puN kernel/sys_ni.c~sys_sysfs-add-config_sysfs_syscall kernel/sys_ni.c
--- a/kernel/sys_ni.c~sys_sysfs-add-config_sysfs_syscall
+++ a/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);
_
Patches currently in -mm which might be from fabf@xxxxxxxxx are
fs-cifs-cifsfsc-add-__init-to-cifs_init_inodecache.patch
fs-udf-superc-add-__init-to-init_inodecache.patch
sys_sysfs-add-config_sysfs_syscall.patch
fs-efs-superc-add-__init-to-init_inodecache.patch
fs-minix-inodec-add-__init-to-init_inodecache.patch
fs-ufs-superc-add-__init-to-init_inodecache.patch
ufs-sb-mutex-merge-mutex_destroy.patch
fs-adfs-superc-add-__init-to-init_inodecache.patch
kernel-panicc-display-reason-at-end-pr_emerg.patch
kernel-panicc-display-reason-at-end-pr_emerg-fix.patch
linux-next.patch
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