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* binfmt_flat: Stub in a FLAT_PLAT_INIT().Takashi YOSHII2008-08-111-1/+3
| | | | | | | | | This provides a FLAT_PLAT_INIT() arch hook for platforms that need to set up specific register state prior to calling in to the process, as per ELF_PLAT_INIT(). Signed-off-by: Takashi YOSHII <yoshii.takashi@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* tracehook: execRoland McGrath2008-07-261-3/+0
| | | | | | | | | | | | | | | | | This moves all the ptrace hooks related to exec into tracehook.h inlines. This also lifts the calls for tracing out of the binfmt load_binary hooks into search_binary_handler() after it calls into the binfmt module. This change has no effect, since all the binfmt modules' load_binary functions did the call at the end on success, and now search_binary_handler() does it immediately after return if successful. We consolidate the repeated code, and binfmt modules no longer need to import ptrace_notify(). Signed-off-by: Roland McGrath <roland@redhat.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Reviewed-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* nommu: fix ksize() abusePekka Enberg2008-06-061-4/+4
| | | | | | | | | | | | | | | The nommu binfmt code uses ksize() for pointers returned from do_mmap() which is wrong. This converts the call-sites to use the nommu specific kobjsize() function which works as expected. Cc: Christoph Lameter <clameter@sgi.com> Cc: Matt Mackall <mpm@selenic.com> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Acked-by: Greg Ungerer <gerg@snapgear.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* procfs task exe symlinkMatt Helsley2008-04-291-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kernel implements readlink of /proc/pid/exe by getting the file from the first executable VMA. Then the path to the file is reconstructed and reported as the result. Because of the VMA walk the code is slightly different on nommu systems. This patch avoids separate /proc/pid/exe code on nommu systems. Instead of walking the VMAs to find the first executable file-backed VMA we store a reference to the exec'd file in the mm_struct. That reference would prevent the filesystem holding the executable file from being unmounted even after unmapping the VMAs. So we track the number of VM_EXECUTABLE VMAs and drop the new reference when the last one is unmapped. This avoids pinning the mounted filesystem. [akpm@linux-foundation.org: improve comments] [yamamoto@valinux.co.jp: fix dup_mmap] Signed-off-by: Matt Helsley <matthltc@us.ibm.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: David Howells <dhowells@redhat.com> Cc:"Eric W. Biederman" <ebiederm@xmission.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* make BINFMT_FLAT a boolAdrian Bunk2008-04-291-6/+0
| | | | | | | | | | | | | I have not yet seen anyone saying he has a reasonable use case for using BINFMT_FLAT modular on his embedded device. Considering that fs/binfmt_flat.c even lacks a MODULE_LICENSE() I really doubt there is any, and this patch therefore makes BINFMT_FLAT a bool. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Bryan Wu <cooloney.lkml@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* FLAT binaries: drop BINFMT_FLAT bad header magic warningMike Frysinger2008-02-141-4/+4
| | | | | | | | | | | | | | | | | The warning issued by fs/binfmt_flat.c when the format handler is given a non-FLAT and non-script executable is annoying to say the least when working with FDPIC ELF objects. If you build a kernel that supports both FLAT and FDPIC ELFs on no-mmu, every time you execute an FDPIC ELF, the kernel spits out this message. While I understand a lot of newcomers to the no-mmu world screw up generation of FLAT binaries, this warning is not usable for systems that support more than just FLAT. Signed-off-by: Jie Zhang <jie.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: Bernd Schmidt <bernds_cb1@t-online.de> Acked-by: Greg Ungerer <gerg@snapgear.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* aout: remove unnecessary inclusions of {asm, linux}/a.out.hDavid Howells2008-02-081-1/+0
| | | | | | | | | | Remove now unnecessary inclusions of {asm,linux}/a.out.h. [akpm@linux-foundation.org: fix alpha build] Signed-off-by: David Howells <dhowells@redhat.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* binfmt_flat: warning fixesAndrew Morton2007-10-171-6/+8
| | | | | | | | | | | | | | | | | | | | Fix this lot: fs/binfmt_flat.c: In function `decompress_exec': fs/binfmt_flat.c:293: warning: label `out' defined but not used fs/binfmt_flat.c: In function `load_flat_file': fs/binfmt_flat.c:462: warning: unsigned int format, long int arg (arg 3) fs/binfmt_flat.c:462: warning: unsigned int format, long int arg (arg 4) fs/binfmt_flat.c:518: warning: comparison of distinct pointer types lacks a cast fs/binfmt_flat.c:549: warning: passing arg 1 of `ksize' makes pointer from integer without a cast fs/binfmt_flat.c:601: warning: passing arg 1 of `ksize' makes pointer from integer without a cast fs/binfmt_flat.c: In function `load_flat_binary': fs/binfmt_flat.c:116: warning: 'dummy' might be used uninitialized in this function Acked-by: Greg Ungerer <gerg@uclinux.org> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* core_pattern: ignore RLIMIT_CORE if core_pattern is a pipeNeil Horman2007-10-171-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For some time /proc/sys/kernel/core_pattern has been able to set its output destination as a pipe, allowing a user space helper to receive and intellegently process a core. This infrastructure however has some shortcommings which can be enhanced. Specifically: 1) The coredump code in the kernel should ignore RLIMIT_CORE limitation when core_pattern is a pipe, since file system resources are not being consumed in this case, unless the user application wishes to save the core, at which point the app is restricted by usual file system limits and restrictions. 2) The core_pattern code should be able to parse and pass options to the user space helper as an argv array. The real core limit of the uid of the crashing proces should also be passable to the user space helper (since it is overridden to zero when called). 3) Some miscellaneous bugs need to be cleaned up (specifically the recognition of a recursive core dump, should the user mode helper itself crash. Also, the core dump code in the kernel should not wait for the user mode helper to exit, since the same context is responsible for writing to the pipe, and a read of the pipe by the user mode helper will result in a deadlock. This patch: Remove the check of RLIMIT_CORE if core_pattern is a pipe. In the event that core_pattern is a pipe, the entire core will be fed to the user mode helper. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> Cc: <martin.pitt@ubuntu.com> Cc: <wwoods@redhat.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* binfmt_flat: checkpatch fixing minimum support for the blackfin relocationsAndrew Morton2007-10-031-1/+2
| | | | | | | | | Cc: Bernd Schmidt <bernd.schmidt@analog.com> Cc: David McCullough <davidm@snapgear.com> Cc: Greg Ungerer <gerg@snapgear.com> Cc: Miles Bader <miles.bader@necel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* Binfmt_flat: Add minimum support for the Blackfin relocationsBernd Schmidt2007-10-031-1/+4
| | | | | | | | | | | | | | | | Add minimum support for the Blackfin relocations, since we don't have enough space in each reloc. The idea is to store a value with one relocation so that subsequent ones can access it. Actually, this patch is required for Blackfin. Currently if BINFMT_FLAT is enabled, git-tree kernel will fail to compile. Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Cc: David McCullough <davidm@snapgear.com> Cc: Greg Ungerer <gerg@snapgear.com> Cc: Miles Bader <miles.bader@necel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
* nommu: report correct errno in messageGreg Ungerer2007-06-081-1/+1
| | | | | | | | | | Report the correct errno for out of memory debug output in binfmt_flat.c Signed-off-by: Philippe De Muyter <phdm@macqel.be> Signed-off-by: Greg Ungerer <gerg@uclinux.org> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] uclinux: correctly remap bin_fmtflat exe allocated mem regionsGreg Ungerer2007-02-091-7/+24
| | | | | | | | | | | | | | | remap() the region we get from mmap() to mark the fact that we are using all of the available slack space. Any slack space is used to form a simple brk region, and potentially more stack space than requested at load time. Any searches of the vma chain may well fail looking for stack (and especially arg) addresses if the remaping is not done. The simplest example is /proc/<pid>/cmdline, since the args are pretty much always at the top of the data/bss/stack region. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] VFS: change struct file to use struct pathJosef "Jeff" Sipek2006-12-081-1/+1
| | | | | | | | | | | | | This patch changes struct file to use struct path instead of having independent pointers to struct dentry and struct vfsmount, and converts all users of f_{dentry,vfsmnt} in fs/ to use f_path.{dentry,mnt}. Additionally, it adds two #define's to make the transition easier for users of the f_dentry and f_vfsmnt. Signed-off-by: Josef "Jeff" Sipek <jsipek@cs.sunysb.edu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-301-1/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [PATCH] uclinux: use PER_LINUX_32BIT in binfmt_flatMalcolm Parsons2006-06-251-1/+1
| | | | | | | | | | binfmt_flat.c calls set_personality with PER_LINUX as the personality. On the arm architecture this results in the program running in 26bit usermode. PER_LINUX_32BIT should be used instead. This doesn't affect other architectures that use binfmt_flat. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] binfmt_flat: don't check for EMFILEAndrew Morton2006-05-211-21/+9
| | | | | | | | | | | | | | | | | Bernd Schmidt points out that binfmt_flat is now leaving the exec file open while the application runs. This offsets all the application's fd numbers. We should have closed the file within exec(), not at exit()-time. But there doesn't seem to be a lot of point in doing all this just to avoid going over RLIMIT_NOFILE by one fd for a few microseconds. So take the EMFILE checking out again. This will cause binfmt_flat to again fail LTP's exec-should-return-EMFILE-when-fdtable-is-full test. That test appears to be wrong anyway - Open Group specs say nothing about exec() returning EMFILE. Cc: Bernd Schmidt <bernd.schmidt@analog.com> Cc: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] flat binary loader doesn't check fd table fullLuke Yang2006-03-251-19/+54
| | | | | | | | | | | In binfmt_flat.c, the flat binary loader should check file descriptor table and install the fd on the file. Convert the function to single-exit and fix this bug. Signed-off-by: "Luke Yang" <luke.adi@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uclinux: delay binfmt_flat traceGreg Ungerer2006-01-101-7/+10
| | | | | | | | | | | | Modify the initial trace output (which is based on flags in the binary header) so that it is not done until after the magic number check. This may well not be a flat format binary, so the flags could be invalid. (Prime example, running a script). Changes prompted by patches from Stuart Hughs. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] dump_thread() cleanupakpm@osdl.org2006-01-101-2/+0
| | | | | | | | | | | | | | | | ) From: Adrian Bunk <bunk@stusta.de> - create one common dump_thread() prototype in kernel.h - dump_thread() is only used in fs/binfmt_aout.c and can therefore be removed on all architectures where CONFIG_BINFMT_AOUT is not available Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] mm: mm_init set_mm_countersHugh Dickins2005-10-291-1/+0
| | | | | | | | | | | | How is anon_rss initialized? In dup_mmap, and by mm_alloc's memset; but that's not so good if an mm_counter_t is a special type. And how is rss initialized? By set_mm_counter, all over the place. Come on, we just need to initialize them both at once by set_mm_counter in mm_init (which follows the memcpy when forking). Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uclinux: use MAP_PRIVATE when mmaping code regions in flat binary loaderGreg Ungerer2005-09-021-1/+1
| | | | | | | | | Use MAP_PRIVATE when calling mmap to get memory for the code region. The flat loader was using MAP_SHARED, but underlying changes to the MMUless mmap means this is now wrong. Signed-off-by: Greg Ungerer <gerg@uclinux.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] binfmt_flat mmap flag fixYoshinori Sato2005-06-061-3/+3
| | | | | | | | | | Make sure that binfmt_flat passes the correct flags into do_mmap(). nommu's validate_mmap_request() will simple return -EINVAL if we try and pass it a flags value of zero. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+901
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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