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This patch removes the devfs code from the init/ directory.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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I found that the prototypes for sys_waitid and sys_fcntl in
<linux/syscalls.h> don't match the implementation. In order to keep all
prototypes in sync in the future, now include the header from each file
implementing any syscall.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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From: Arnd Bergmann <arnd@arndb.de>
Dave Jones already removed some of the useless __KERNEL_SYSCALLS__ defines
in various files, this gets rid of almost all the others. Replacing
execve() is nontrivial, so I left those in for now.
For all the other system calls that are currently used from inside the
kernel, calling the sys_* function directly should always have an identical
effect.
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From: "Randy.Dunlap" <rddunlap@osdl.org>
Add syscalls.h, which contains prototypes for the kernel's system calls.
Replace open-coded declarations all over the place. This patch found a
couple of prior bugs. It appears to be more important with -mregparm=3 as we
discover more asmlinkage mismatches.
Some syscalls have arch-dependent arguments, so their prototypes are in the
arch-specific unistd.h. Maybe it should have been asm/syscalls.h, but there
were already arch-specific syscall prototypes in asm/unistd.h...
Tested on x86, ia64, x86_64, ppc64, s390 and sparc64. May cause
trivial-to-fix build breakage on other architectures.
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Real conversion to 32bit dev_t. Expansion to:
* mknod() - 32
* newstat() - 32 on 64bit platforms
* stat64() - 32 on mips, 64 on everything else (mips has weird struct
stat64 and can't get more than 32 bits). Note that right now the difference
is purely theoretical - we don't have internal values above 32 bits, so
huge_... vs. new_... only marks the places where 64bit conversion will need
extra work.
* arch-dependent stat variants - depending on width available.
* ustat et.al. - 32
* filesystems that can handle 32 bits right now - 32
* ext2 and ext3 - 32, with large dev_t inodes having 0 in the first
element of i_data[] (where we store dev_t value for small device numbers) and
keeping the value in the second element.
* nfsd - 32; it can be driven to 64, but we'll get several issues with
NFSv2 support.
* RAID - 32
* devmapper - with v1 it's still 16 (nothing to do here), with v4 it's
64.
* loop - 64
* initramfs - 32
* do_mounts code - 32. Parts that scan devfs tree are using newstat()
on 64bit platforms and stat64() on the rest (IOW, the latest stat variant on
given platform).
* old_valid_dev()/new_valid_dev() added where needed (stat variants,
mostly - we fail with -EOVERFLOW if values do not fit).
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Changed sys_mknod() prototype to have unsigned int passed to it
instead of current dev_t. Added old_decode_dev() in sys_mknod() and
made sure that its callers are passing it old_encode_dev(<value>)
Switched sys_ustat() and its variants from dev_t to unsigned (and
added old_decode_dev()).
Took care of assignments to ROOT_DEV - again, old_decode_dev().
Late-boot search in devfs (call sys_newstat() and compare with
st_rdev) also updated.
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This function tries to allocate increasingly large buffers, but it gets the
bounds wrong by a factor of PAGE_SIZE. It causes boot-time devfs mounting
to fail.
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Get rid of a couple scattered #ifdef CONFIG_DEVFS_FS in init/do_mounts.c
by moving the devfs code into its own file and using stubs when it's
not selected.
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