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* firmware: create firmware binaries during 'make modules'.David Woodhouse2008-07-25
| | | | | | | This means that we no longer need write access to the source tree while doing 'make modules_install'. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* markers: fix duplicate modpost entryMathieu Desnoyers2008-07-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a kernel was rebuilt, the previous Module.markers was not cleared. It caused markers with different format strings to appear as duplicates when a markers was changed. This problem is present since scripts/mod/modpost.c started to generate Module.markers, commit b2e3e658b344c6bcfb8fb694100ab2f2b5b2edb0 It therefore applies to 2.6.25, 2.6.26 and linux-next. I merely merged the patches from Roland, Wenji and Takashi here. Credits to Roland McGrath <roland@redhat.com> Wenji Huang <wenji.huang@oracle.com> and Takashi Nishiie <t-nishiie@np.css.fujitsu.com> for providing the individual fixes. - Changelog : - Integrated Takashi's Makefile modification to clear Module.markers upon make clean. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Roland McGrath <roland@redhat.com> Cc: Wenji Huang <wenji.huang@oracle.com> Cc: Takashi Nishiie <t-nishiie@np.css.fujitsu.com> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix collateral damage to top level MakefileGrant Likely2008-07-17
| | | | | | | | | | | | | | | The patch named "powerpc/mpc5121: Add clock driver", also contained an unrelated and bogus change to the top-level makefile. This patch backs out the bad bit. SHA1 of offending patch: 137e95906e294913fab02162e8a1948ade49acb5) Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Repented-by: John Rigby <jrigby@freescale.com> [ Heh. Normally I pick these out from the diffstats, but I guess I've grown to trust the ppc tree too much ;) - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix MIPS cross-compile problemRalf Baechle2008-07-16
| | | | | | | | | | | | | | | | | | | | | | Crosscompiling on a Fedora 9 machine running gcc 4.3.0 as its host compiler and gcc 3.4.6 for the mips-linux target results in the following build error: $ make malta_defconfig $ make cc1: error: unrecognized command line option "-fno-stack-protector" scripts/kconfig/conf -s arch/mips/Kconfig cc1: error: unrecognized command line option "-fno-stack-protector" The arch Makefile is included too late so the host compiler is feature tested, not the crosscompiler as intended and thus the Makefile applies adds -fno-stack-protector to crosscompiler's flags which fails for gcc 3.4.6. The bug was introduced by e06b8b98da071f7dd78fb7822991694288047df0 in 2.6.25; 35bb5b1e0e84cfa1a8906f7e6a77f391ff315791 did add more flags testing before the arch Makefile inclusion. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge commit 'origin/master'Benjamin Herrenschmidt2008-07-15
|\ | | | | | | | | | | | | | | Manual merge of: arch/powerpc/Kconfig arch/powerpc/kernel/stacktrace.c arch/powerpc/mm/slice.c arch/ppc/kernel/smp.c
| * Merge branch 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6Linus Torvalds2008-07-14
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6: (64 commits) firmware: convert sb16_csp driver to use firmware loader exclusively dsp56k: use request_firmware edgeport-ti: use request_firmware() edgeport: use request_firmware() vicam: use request_firmware() dabusb: use request_firmware() cpia2: use request_firmware() ip2: use request_firmware() firmware: convert Ambassador ATM driver to request_firmware() whiteheat: use request_firmware() ti_usb_3410_5052: use request_firmware() emi62: use request_firmware() emi26: use request_firmware() keyspan_pda: use request_firmware() keyspan: use request_firmware() ttusb-budget: use request_firmware() kaweth: use request_firmware() smctr: use request_firmware() firmware: convert ymfpci driver to use firmware loader exclusively firmware: convert maestro3 driver to use firmware loader exclusively ... Fix up trivial conflicts with BKL removal in drivers/char/dsp56k.c and drivers/char/ip2/ip2main.c manually.
| | * Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.gitDavid Woodhouse2008-07-14
| | |\ | | | | | | | | | | | | | | | | | | | | Conflicts: sound/pci/Kconfig
| | | * firmware: Add firmware installation to modules_install, add firmware_installDavid Woodhouse2008-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For 'make modules_install', install any firmware required by the modules which are being installed. Also add a 'make firmware_install' target which doesn't depend on the configuration, but installs _all_ available in-kernel-tree firmware into $(INSTALL_FW_PATH), which defaults to /lib/firmware. This is intended for distributors to make arch-independent (and config-independent) packages containing firmware. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | | * firmware: Add CONFIG_EXTRA_FIRMWARE optionDavid Woodhouse2008-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows arbitrary firmware files to be included in the static kernel where the firmware loader can find them without requiring userspace to be alive. (Updated and CONFIG_EXTRA_FIRMWARE_DIR added with lots of help from Johannes Berg). Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
* | | | Merge commit '85082fd7cbe3173198aac0eb5e85ab1edcc6352c' into test-buildBenjamin Herrenschmidt2008-07-15
|\| | | | | | | | | | | | | | | | | | | Manual fixup of: arch/powerpc/Kconfig
| * | | Merge branch 'auto-ftrace-next' into tracing/for-linusIngo Molnar2008-07-14
| |\ \ \ | | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/x86/kernel/entry_32.S arch/x86/kernel/process_32.c arch/x86/kernel/process_64.c arch/x86/lib/Makefile include/asm-x86/irqflags.h kernel/Makefile kernel/sched.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | Merge branch 'tracing/ftrace' into auto-ftrace-nextIngo Molnar2008-07-10
| | |\ \ | | | |/ | | |/|
| | | * Merge branch 'linus' into tracing/ftraceIngo Molnar2008-06-25
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| | | * \ Merge branch 'linus' into tracing/ftraceIngo Molnar2008-06-23
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| | | * \ \ Merge branch 'linus' into tracing/ftraceIngo Molnar2008-06-16
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| | | * | | | ftrace: add basic support for gcc profiler instrumentationArnaldo Carvalho de Melo2008-05-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If CONFIG_FTRACE is selected and /proc/sys/kernel/ftrace_enabled is set to a non-zero value the ftrace routine will be called everytime we enter a kernel function that is not marked with the "notrace" attribute. The ftrace routine will then call a registered function if a function happens to be registered. [ This code has been highly hacked by Steven Rostedt and Ingo Molnar, so don't blame Arnaldo for all of this ;-) ] Update: It is now possible to register more than one ftrace function. If only one ftrace function is registered, that will be the function that ftrace calls directly. If more than one function is registered, then ftrace will call a function that will loop through the functions to call. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
* | | | | | | Merge commit 'gcl/gcl-next'Benjamin Herrenschmidt2008-07-14
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| * | | | | | powerpc/mpc5121: Add clock driverJohn Rigby2008-07-12
| | |_|_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Plugs into the generic powerpc clock driver in arch/powerpc/kernel/clock.c The following subset of clk_interface is implemented: clk_get, clk_put: get clock via name, release clock clk_enable, clk_disable: enable or disable clock clk_get_rate: get clock rate in Hz clk_set_rate: stubbed clk_round_rate: stubbed clk_set_parent: NULL clk_get_parent: NULL Signed-off-by: John Rigby <jrigby@freescale.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | | | | Linux 2.6.26v2.6.26Linus Torvalds2008-07-13
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* | | | | Linux 2.6.26-rc9v2.6.26-rc9Linus Torvalds2008-07-05
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* | | / Linux 2.6.26-rc8v2.6.26-rc8Linus Torvalds2008-06-24
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* | | Linux 2.6.26-rc7v2.6.26-rc7Linus Torvalds2008-06-20
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* | Linux 2.6.26-rc6v2.6.26-rc6Linus Torvalds2008-06-12
| | | | | | | | .. and a new name, courtesy of Alan.
* | Linux 2.6.26-rc5v2.6.26-rc5Linus Torvalds2008-06-04
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* | Linux 2.6.26-rc4v2.6.26-rc4Linus Torvalds2008-05-26
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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixesLinus Torvalds2008-05-19
|\ | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: Don't clean bounds.h and asm-offsets.h kconfig: incorrect 'len' field initialisation ? kernel-doc: allow unnamed bit-fields kbuild: filter away debug symbols from kernel symbols Remove *.rej pattern from .gitignore MAINTAINERS: document names of new kbuild trees kbuild: disable modpost warnings for linkonce sections kbuild: escape meta characters in regular expression in make TAGS
| * Don't clean bounds.h and asm-offsets.hJan Blunck2008-05-19
| | | | | | | | | | | | | | | | | | | | | | Since 97965478a66fbdf0f4ad5e4ecc4828f0cb548a45 ("mm: Get rid of __ZONE_COUNT") mmzone.h includes bounds.h. Calling make clean after make prepare removes bounds.h again so when building external modules this fails. Signed-off-by: Jan Blunck <jblunck@suse.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> --
| * kbuild: escape meta characters in regular expression in make TAGSMasatake YAMATO2008-05-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Alexey Dobriyan <adobriyan@gmail.com> introduced a code adds menuconfig SOMETHING in Kconfig to tags output when you did "make tags". See http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=80ff26241623875636674a31c0540a78c0fb5433 "make tags" may work fine with his code. However make TAGS doesn't work well because etags command requires backslashes to escape meta characters like `(', `)' and `|'. Here is a patch. Signed-off-by: Masatake YAMATO <yamato@redhat.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* | Linux 2.6.26-rc3v2.6.26-rc3Linus Torvalds2008-05-18
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* | Linux 2.6.26-rc2v2.6.26-rc2Linus Torvalds2008-05-11
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* Linux 2.6.26-rc1v2.6.26-rc1Linus Torvalds2008-05-03
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* kbuild: fix vmlinux.o linkSam Ravnborg2008-05-01
| | | | | | | We always linked vmliux.o. Remove init/built-in.o dependency so we avoid this Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* kbuild: fix help output to show correct archAndres Salomon2008-04-28
| | | | | Signed-off-by: Andres Salomon <dilinger@debian.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* kbuild: show defconfig subdirs in make helpSegher Boessenkool2008-04-28
| | | | | | | | | | | | | | | | | | | | PowerPC will start moving board defconfigs into subarch-specific subdirs soon. "make help" currently does not look in subdirs to find the defconfigs to show. This is partially a good thing, since there are way too many defconfigs for one list. This patch makes the main "make help" display something like help-40x - Show 40x-specific targets help-44x - Show 44x-specific targets help-boards - Show all of the above and wires up stuff so those new help-* commands actually work. [sam: fixed it up to display x86 defconfigs too] Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* kbuild: fix depmod commentUwe Kleine-König2008-04-25
| | | | | | Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com> Cc: trivial@kernel.org Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* Add option to enable -Wframe-larger-than= on gcc 4.4Andi Kleen2008-04-25
| | | | | | | | | | | | | | | | | | | | | | Add option to enable -Wframe-larger-than= on gcc 4.4 gcc mainline (upcoming 4.4) added a new -Wframe-larger-than=... option to warn at build time about too large stack frames. Add a config option to enable this warning, since this very useful for the kernel. I choose (somewhat arbitarily) 2048 as default warning threshold for 64bit and 1024 as default for 32bit architectures. With some research and fixing all the code for smaller values these defaults should be probably lowered. With the default allyesconfigs have some new warnings, but I think that is all code that should be just fixed. At some point (when gcc 4.4 is released and widely used) this should obsolete make checkstack Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* kbuild: add kconfig symbols to tags outputAlexey Dobriyan2008-04-25
| | | | | | | | | Steps to reproduce: vi -t NETFILTER Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
* Remove -numa from EXTRAVERSIONSebastian Siewior2008-04-24
| | | | | | | | | This snuck in through 919ee677b656c52c5f86d3d916786891220d5452 ("[SPARC64]: Add NUMA support") Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [SPARC64]: Add NUMA support.David S. Miller2008-04-24
| | | | | | | | Currently there is only code to parse NUMA attributes on sun4v/niagara systems, but later on we will add such parsing for older systems. Signed-off-by: David S. Miller <davem@davemloft.net>
* fix typo "is" -> "if" in MakefileUwe Kleine-K�nig2008-04-21
| | | | | | | It should be "if" but is written as "is".. Signed-off-by: Uwe Kleine-Koenig <Uwe.Kleine-Koenig@digi.com> Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
* Linux 2.6.25v2.6.25Linus Torvalds2008-04-16
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* Linux 2.6.25-rc9v2.6.25-rc9Linus Torvalds2008-04-11
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* Linux 2.6.25-rc8v2.6.25-rc8Linus Torvalds2008-04-01
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* Linux 2.6.25-rc7v2.6.25-rc7Linus Torvalds2008-03-25
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* kbuild: soften modpost checks when doing cross buildsSam Ravnborg2008-03-23
| | | | | | | | | | | | | | | | The module alias support in the kernel have a consistency check where it is checked that the size of a structure in the kernel and on the build host are the same. For cross builds this check does not make sense so detect when we do cross builds and silently skip the check in these situations. This fixes a build bug for a wireless driver when cross building for arm. Acked-by: Michael Buesch <mb@bu3sch.de> Tested-by: Gordon Farquharson <gordonfarquharson@gmail.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: stable@kernel.org
* Linux 2.6.25-rc6v2.6.25-rc6Linus Torvalds2008-03-16
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* Linux 2.6.25-rc5v2.6.25-rc5Linus Torvalds2008-03-10
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* Linux 2.6.25-rc4v2.6.25-rc4Linus Torvalds2008-03-04
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* Linux 2.6.25-rc3v2.6.25-rc3Linus Torvalds2008-02-24
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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuildLinus Torvalds2008-02-18
|\ | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: kbuild: explain why DEBUG_SECTION_MISMATCH is UNDEFINED kbuild: fix building vmlinux.o kbuild: allow -fstack-protector to take effect kconfig: fix select in combination with default
an class="hl opt">->server->maxBuf < 4096 + MAX_CIFS_HDR_SIZE) inode->i_data.a_ops->readpages = NULL; } else if (S_ISDIR(inode->i_mode)) { cFYI(1, ("Directory inode")); inode->i_op = &cifs_dir_inode_ops; inode->i_fop = &cifs_dir_ops; } else if (S_ISLNK(inode->i_mode)) { cFYI(1, ("Symbolic Link inode")); inode->i_op = &cifs_symlink_inode_ops; /* tmp_inode->i_fop = */ /* do not need to set to anything */ } else { cFYI(1, ("Init special inode")); init_special_inode(inode, inode->i_mode, inode->i_rdev); } } return rc; } static int decode_sfu_inode(struct inode * inode, __u64 size, const unsigned char *path, struct cifs_sb_info *cifs_sb, int xid) { int rc; int oplock = FALSE; __u16 netfid; struct cifsTconInfo *pTcon = cifs_sb->tcon; char buf[24]; unsigned int bytes_read; char * pbuf; pbuf = buf; if(size == 0) { inode->i_mode |= S_IFIFO; return 0; } else if (size < 8) { return -EINVAL; /* EOPNOTSUPP? */ } rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ, CREATE_NOT_DIR, &netfid, &oplock, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc==0) { /* Read header */ rc = CIFSSMBRead(xid, pTcon, netfid, 24 /* length */, 0 /* offset */, &bytes_read, &pbuf); if((rc == 0) && (bytes_read >= 8)) { if(memcmp("IntxBLK", pbuf, 8) == 0) { cFYI(1,("Block device")); inode->i_mode |= S_IFBLK; if(bytes_read == 24) { /* we have enough to decode dev num */ __u64 mjr; /* major */ __u64 mnr; /* minor */ mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); inode->i_rdev = MKDEV(mjr, mnr); } } else if(memcmp("IntxCHR", pbuf, 8) == 0) { cFYI(1,("Char device")); inode->i_mode |= S_IFCHR; if(bytes_read == 24) { /* we have enough to decode dev num */ __u64 mjr; /* major */ __u64 mnr; /* minor */ mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); inode->i_rdev = MKDEV(mjr, mnr); } } else if(memcmp("IntxLNK", pbuf, 7) == 0) { cFYI(1,("Symlink")); inode->i_mode |= S_IFLNK; } else { inode->i_mode |= S_IFREG; /* file? */ rc = -EOPNOTSUPP; } } else { inode->i_mode |= S_IFREG; /* then it is a file */ rc = -EOPNOTSUPP; /* or some unknown SFU type */ } CIFSSMBClose(xid, pTcon, netfid); } return rc; } #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */ static int get_sfu_uid_mode(struct inode * inode, const unsigned char *path, struct cifs_sb_info *cifs_sb, int xid) { #ifdef CONFIG_CIFS_XATTR ssize_t rc; char ea_value[4]; __u32 mode; rc = CIFSSMBQueryEA(xid, cifs_sb->tcon, path, "SETFILEBITS", ea_value, 4 /* size of buf */, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if(rc < 0) return (int)rc; else if (rc > 3) { mode = le32_to_cpu(*((__le32 *)ea_value)); inode->i_mode &= ~SFBITS_MASK; cFYI(1,("special bits 0%o org mode 0%o", mode, inode->i_mode)); inode->i_mode = (mode & SFBITS_MASK) | inode->i_mode; cFYI(1,("special mode bits 0%o", mode)); return 0; } else { return 0; } #else return -EOPNOTSUPP; #endif } int cifs_get_inode_info(struct inode **pinode, const unsigned char *search_path, FILE_ALL_INFO *pfindData, struct super_block *sb, int xid) { int rc = 0; struct cifsTconInfo *pTcon; struct inode *inode; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); char *tmp_path; char *buf = NULL; pTcon = cifs_sb->tcon; cFYI(1,("Getting info on %s", search_path)); if ((pfindData == NULL) && (*pinode != NULL)) { if (CIFS_I(*pinode)->clientCanCacheRead) { cFYI(1,("No need to revalidate cached inode sizes")); return rc; } } /* if file info not passed in then get it from server */ if (pfindData == NULL) { buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); if (buf == NULL) return -ENOMEM; pfindData = (FILE_ALL_INFO *)buf; /* could do find first instead but this returns more info */ rc = CIFSSMBQPathInfo(xid, pTcon, search_path, pfindData, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); /* BB optimize code so we do not make the above call when server claims no NT SMB support and the above call failed at least once - set flag in tcon or mount */ if((rc == -EOPNOTSUPP) || (rc == -EINVAL)) { rc = SMBQueryInformation(xid, pTcon, search_path, pfindData, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); } } /* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */ if (rc) { if (rc == -EREMOTE) { tmp_path = kmalloc(strnlen (pTcon->treeName, MAX_TREE_SIZE + 1) + strnlen(search_path, MAX_PATHCONF) + 1, GFP_KERNEL); if (tmp_path == NULL) { kfree(buf); return -ENOMEM; } strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE); strncat(tmp_path, search_path, MAX_PATHCONF); rc = connect_to_dfs_path(xid, pTcon->ses, /* treename + */ tmp_path, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); kfree(tmp_path); /* BB fix up inode etc. */ } else if (rc) { kfree(buf); return rc; } } else { struct cifsInodeInfo *cifsInfo; __u32 attr = le32_to_cpu(pfindData->Attributes); /* get new inode */ if (*pinode == NULL) { *pinode = new_inode(sb); if (*pinode == NULL) return -ENOMEM; /* Is an i_ino of zero legal? Can we use that to check if the server supports returning inode numbers? Are there other sanity checks we can use to ensure that the server is really filling in that field? */ /* We can not use the IndexNumber field by default from Windows or Samba (in ALL_INFO buf) but we can request it explicitly. It may not be unique presumably if the server has multiple devices mounted under one share */ /* There may be higher info levels that work but are there Windows server or network appliances for which IndexNumber field is not guaranteed unique? */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM){ int rc1 = 0; __u64 inode_num; rc1 = CIFSGetSrvInodeNumber(xid, pTcon, search_path, &inode_num, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc1) { cFYI(1,("GetSrvInodeNum rc %d", rc1)); /* BB EOPNOSUPP disable SERVER_INUM? */ } else /* do we need cast or hash to ino? */ (*pinode)->i_ino = inode_num; } /* else ino incremented to unique num in new_inode*/ insert_inode_hash(*pinode); } inode = *pinode; cifsInfo = CIFS_I(inode); cifsInfo->cifsAttrs = attr; cFYI(1, ("Old time %ld ", cifsInfo->time)); cifsInfo->time = jiffies; cFYI(1, ("New time %ld ", cifsInfo->time)); /* blksize needs to be multiple of two. So safer to default to blksize and blkbits set in superblock so 2**blkbits and blksize will match rather than setting to: (pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/ /* Linux can not store file creation time unfortunately so we ignore it */ inode->i_atime = cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastAccessTime)); inode->i_mtime = cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime)); inode->i_ctime = cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime)); cFYI(0, ("Attributes came in as 0x%x ", attr)); /* set default mode. will override for dirs below */ if (atomic_read(&cifsInfo->inUse) == 0) /* new inode, can safely set these fields */ inode->i_mode = cifs_sb->mnt_file_mode; else /* since we set the inode type below we need to mask off to avoid strange results if type changes and both get orred in */ inode->i_mode &= ~S_IFMT; /* if (attr & ATTR_REPARSE) */ /* We no longer handle these as symlinks because we could not follow them due to the absolute path with drive letter */ if (attr & ATTR_DIRECTORY) { /* override default perms since we do not do byte range locking on dirs */ inode->i_mode = cifs_sb->mnt_dir_mode; inode->i_mode |= S_IFDIR; } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) && (cifsInfo->cifsAttrs & ATTR_SYSTEM) && /* No need to le64 convert size of zero */ (pfindData->EndOfFile == 0)) { inode->i_mode = cifs_sb->mnt_file_mode; inode->i_mode |= S_IFIFO; /* BB Finish for SFU style symlinks and devices */ } else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) && (cifsInfo->cifsAttrs & ATTR_SYSTEM)) { if (decode_sfu_inode(inode, le64_to_cpu(pfindData->EndOfFile), search_path, cifs_sb, xid)) { cFYI(1,("Unrecognized sfu inode type")); } cFYI(1,("sfu mode 0%o",inode->i_mode)); } else { inode->i_mode |= S_IFREG; /* treat the dos attribute of read-only as read-only mode e.g. 555 */ if (cifsInfo->cifsAttrs & ATTR_READONLY) inode->i_mode &= ~(S_IWUGO); /* BB add code here - validate if device or weird share or device type? */ } if (is_size_safe_to_change(cifsInfo)) { /* can not safely change the file size here if the client is writing to it due to potential races */ i_size_write(inode,le64_to_cpu(pfindData->EndOfFile)); /* 512 bytes (2**9) is the fake blocksize that must be used for this calculation */ inode->i_blocks = (512 - 1 + le64_to_cpu( pfindData->AllocationSize)) >> 9; } inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks); /* BB fill in uid and gid here? with help from winbind? or retrieve from NTFS stream extended attribute */ if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { /* fill in uid, gid, mode from server ACL */ get_sfu_uid_mode(inode, search_path, cifs_sb, xid); } else if (atomic_read(&cifsInfo->inUse) == 0) { inode->i_uid = cifs_sb->mnt_uid; inode->i_gid = cifs_sb->mnt_gid; /* set so we do not keep refreshing these fields with bad data after user has changed them in memory */ atomic_set(&cifsInfo->inUse,1); } if (S_ISREG(inode->i_mode)) { cFYI(1, ("File inode")); inode->i_op = &cifs_file_inode_ops; if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) { if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) inode->i_fop = &cifs_file_direct_nobrl_ops; else inode->i_fop = &cifs_file_direct_ops; } else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) inode->i_fop = &cifs_file_nobrl_ops; else /* not direct, send byte range locks */ inode->i_fop = &cifs_file_ops; inode->i_data.a_ops = &cifs_addr_ops; if(pTcon->ses->server->maxBuf < 4096 + MAX_CIFS_HDR_SIZE) inode->i_data.a_ops->readpages = NULL; } else if (S_ISDIR(inode->i_mode)) { cFYI(1, ("Directory inode")); inode->i_op = &cifs_dir_inode_ops; inode->i_fop = &cifs_dir_ops; } else if (S_ISLNK(inode->i_mode)) { cFYI(1, ("Symbolic Link inode")); inode->i_op = &cifs_symlink_inode_ops; } else { init_special_inode(inode, inode->i_mode, inode->i_rdev); } } kfree(buf); return rc; } /* gets root inode */ void cifs_read_inode(struct inode *inode) { int xid; struct cifs_sb_info *cifs_sb; cifs_sb = CIFS_SB(inode->i_sb); xid = GetXid(); if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) cifs_get_inode_info_unix(&inode, "", inode->i_sb,xid); else cifs_get_inode_info(&inode, "", NULL, inode->i_sb,xid); /* can not call macro FreeXid here since in a void func */ _FreeXid(xid); } int cifs_unlink(struct inode *inode, struct dentry *direntry) { int rc = 0; int xid; struct cifs_sb_info *cifs_sb; struct cifsTconInfo *pTcon; char *full_path = NULL; struct cifsInodeInfo *cifsInode; FILE_BASIC_INFO *pinfo_buf; cFYI(1, ("cifs_unlink, inode = 0x%p with ", inode)); xid = GetXid(); cifs_sb = CIFS_SB(inode->i_sb); pTcon = cifs_sb->tcon; /* Unlink can be called from rename so we can not grab the sem here since we deadlock otherwise */ /* down(&direntry->d_sb->s_vfs_rename_sem);*/ full_path = build_path_from_dentry(direntry); /* up(&direntry->d_sb->s_vfs_rename_sem);*/ if (full_path == NULL) { FreeXid(xid); return -ENOMEM; } rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (!rc) { if (direntry->d_inode) direntry->d_inode->i_nlink--; } else if (rc == -ENOENT) { d_drop(direntry); } else if (rc == -ETXTBSY) { int oplock = FALSE; __u16 netfid; rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE, CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE, &netfid, &oplock, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc==0) { CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); CIFSSMBClose(xid, pTcon, netfid); if (direntry->d_inode) direntry->d_inode->i_nlink--; } } else if (rc == -EACCES) { /* try only if r/o attribute set in local lookup data? */ pinfo_buf = kmalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL); if (pinfo_buf) { memset(pinfo_buf, 0, sizeof(FILE_BASIC_INFO)); /* ATTRS set to normal clears r/o bit */ pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL); if (!(pTcon->ses->flags & CIFS_SES_NT4)) rc = CIFSSMBSetTimes(xid, pTcon, full_path, pinfo_buf, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); else rc = -EOPNOTSUPP; if (rc == -EOPNOTSUPP) { int oplock = FALSE; __u16 netfid; /* rc = CIFSSMBSetAttrLegacy(xid, pTcon, full_path, (__u16)ATTR_NORMAL, cifs_sb->local_nls); For some strange reason it seems that NT4 eats the old setattr call without actually setting the attributes so on to the third attempted workaround */ /* BB could scan to see if we already have it open and pass in pid of opener to function */ rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, 0, &netfid, &oplock, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc==0) { rc = CIFSSMBSetFileTimes(xid, pTcon, pinfo_buf, netfid); CIFSSMBClose(xid, pTcon, netfid); } } kfree(pinfo_buf); } if (rc==0) { rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (!rc) { if (direntry->d_inode) direntry->d_inode->i_nlink--; } else if (rc == -ETXTBSY) { int oplock = FALSE; __u16 netfid; rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE, CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE, &netfid, &oplock, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc==0) { CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); CIFSSMBClose(xid, pTcon, netfid); if (direntry->d_inode) direntry->d_inode->i_nlink--; } /* BB if rc = -ETXTBUSY goto the rename logic BB */ } } } if (direntry->d_inode) { cifsInode = CIFS_I(direntry->d_inode); cifsInode->time = 0; /* will force revalidate to get info when needed */ direntry->d_inode->i_ctime = current_fs_time(inode->i_sb); } inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb); cifsInode = CIFS_I(inode); cifsInode->time = 0; /* force revalidate of dir as well */ kfree(full_path); FreeXid(xid); return rc; } int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode) { int rc = 0; int xid; struct cifs_sb_info *cifs_sb; struct cifsTconInfo *pTcon; char *full_path = NULL; struct inode *newinode = NULL; cFYI(1, ("In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode)); xid = GetXid(); cifs_sb = CIFS_SB(inode->i_sb); pTcon = cifs_sb->tcon; down(&inode->i_sb->s_vfs_rename_sem); full_path = build_path_from_dentry(direntry); up(&inode->i_sb->s_vfs_rename_sem); if (full_path == NULL) { FreeXid(xid); return -ENOMEM; } /* BB add setting the equivalent of mode via CreateX w/ACLs */ rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc) { cFYI(1, ("cifs_mkdir returned 0x%x ", rc)); d_drop(direntry); } else { inode->i_nlink++; if (pTcon->ses->capabilities & CAP_UNIX) rc = cifs_get_inode_info_unix(&newinode, full_path, inode->i_sb,xid); else rc = cifs_get_inode_info(&newinode, full_path, NULL, inode->i_sb,xid); if (pTcon->nocase) direntry->d_op = &cifs_ci_dentry_ops; else direntry->d_op = &cifs_dentry_ops; d_instantiate(direntry, newinode); if (direntry->d_inode) direntry->d_inode->i_nlink = 2; if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, (__u64)current->euid, (__u64)current->egid, 0 /* dev_t */, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); } else { CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, (__u64)-1, (__u64)-1, 0 /* dev_t */, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); } else { /* BB to be implemented via Windows secrty descriptors eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, -1, -1, local_nls); */ if(direntry->d_inode) { direntry->d_inode->i_mode = mode; direntry->d_inode->i_mode |= S_IFDIR; if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { direntry->d_inode->i_uid = current->fsuid; direntry->d_inode->i_gid = current->fsgid; } } } } kfree(full_path); FreeXid(xid); return rc; } int cifs_rmdir(struct inode *inode, struct dentry *direntry) { int rc = 0; int xid; struct cifs_sb_info *cifs_sb; struct cifsTconInfo *pTcon; char *full_path = NULL; struct cifsInodeInfo *cifsInode; cFYI(1, ("cifs_rmdir, inode = 0x%p with ", inode)); xid = GetXid(); cifs_sb = CIFS_SB(inode->i_sb); pTcon = cifs_sb->tcon; down(&inode->i_sb->s_vfs_rename_sem); full_path = build_path_from_dentry(direntry); up(&inode->i_sb->s_vfs_rename_sem); if (full_path == NULL) { FreeXid(xid); return -ENOMEM; } rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (!rc) { inode->i_nlink--; i_size_write(direntry->d_inode,0); direntry->d_inode->i_nlink = 0; } cifsInode = CIFS_I(direntry->d_inode); cifsInode->time = 0; /* force revalidate to go get info when needed */ direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb); kfree(full_path); FreeXid(xid); return rc; } int cifs_rename(struct inode *source_inode, struct dentry *source_direntry, struct inode *target_inode, struct dentry *target_direntry) { char *fromName; char *toName; struct cifs_sb_info *cifs_sb_source; struct cifs_sb_info *cifs_sb_target; struct cifsTconInfo *pTcon; int xid; int rc = 0; xid = GetXid(); cifs_sb_target = CIFS_SB(target_inode->i_sb); cifs_sb_source = CIFS_SB(source_inode->i_sb); pTcon = cifs_sb_source->tcon; if (pTcon != cifs_sb_target->tcon) { FreeXid(xid); return -EXDEV; /* BB actually could be allowed if same server, but different share. Might eventually add support for this */ } /* we already have the rename sem so we do not need to grab it again here to protect the path integrity */ fromName = build_path_from_dentry(source_direntry); toName = build_path_from_dentry(target_direntry); if ((fromName == NULL) || (toName == NULL)) { rc = -ENOMEM; goto cifs_rename_exit; } rc = CIFSSMBRename(xid, pTcon, fromName, toName, cifs_sb_source->local_nls, cifs_sb_source->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc == -EEXIST) { /* check if they are the same file because rename of hardlinked files is a noop */ FILE_UNIX_BASIC_INFO *info_buf_source; FILE_UNIX_BASIC_INFO *info_buf_target; info_buf_source = kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); if (info_buf_source != NULL) { info_buf_target = info_buf_source + 1; rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName, info_buf_source, cifs_sb_source->local_nls, cifs_sb_source->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc == 0) { rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName, info_buf_target, cifs_sb_target->local_nls, /* remap based on source sb */ cifs_sb_source->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); } if ((rc == 0) && (info_buf_source->UniqueId == info_buf_target->UniqueId)) { /* do not rename since the files are hardlinked which is a noop */ } else { /* we either can not tell the files are hardlinked (as with Windows servers) or files are not hardlinked so delete the target manually before renaming to follow POSIX rather than Windows semantics */ cifs_unlink(target_inode, target_direntry); rc = CIFSSMBRename(xid, pTcon, fromName, toName, cifs_sb_source->local_nls, cifs_sb_source->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); } kfree(info_buf_source); } /* if we can not get memory just leave rc as EEXIST */ } if (rc) { cFYI(1, ("rename rc %d", rc)); } if ((rc == -EIO) || (rc == -EEXIST)) { int oplock = FALSE; __u16 netfid; /* BB FIXME Is Generic Read correct for rename? */ /* if renaming directory - we should not say CREATE_NOT_DIR, need to test renaming open directory, also GENERIC_READ might not right be right access to request */ rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ, CREATE_NOT_DIR, &netfid, &oplock, NULL, cifs_sb_source->local_nls, cifs_sb_source->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc==0) { CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName, cifs_sb_source->local_nls, cifs_sb_source->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); CIFSSMBClose(xid, pTcon, netfid); } } cifs_rename_exit: kfree(fromName); kfree(toName); FreeXid(xid); return rc; } int cifs_revalidate(struct dentry *direntry) { int xid; int rc = 0; char *full_path; struct cifs_sb_info *cifs_sb; struct cifsInodeInfo *cifsInode; loff_t local_size; struct timespec local_mtime; int invalidate_inode = FALSE; if (direntry->d_inode == NULL) return -ENOENT; cifsInode = CIFS_I(direntry->d_inode); if (cifsInode == NULL) return -ENOENT; /* no sense revalidating inode info on file that no one can write */ if (CIFS_I(direntry->d_inode)->clientCanCacheRead) return rc; xid = GetXid(); cifs_sb = CIFS_SB(direntry->d_sb); /* can not safely grab the rename sem here if rename calls revalidate since that would deadlock */ full_path = build_path_from_dentry(direntry); if (full_path == NULL) { FreeXid(xid); return -ENOMEM; } cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld " "jiffies %ld", full_path, direntry->d_inode, direntry->d_inode->i_count.counter, direntry, direntry->d_time, jiffies)); if (cifsInode->time == 0) { /* was set to zero previously to force revalidate */ } else if (time_before(jiffies, cifsInode->time + HZ) && lookupCacheEnabled) { if ((S_ISREG(direntry->d_inode->i_mode) == 0) || (direntry->d_inode->i_nlink == 1)) { kfree(full_path); FreeXid(xid); return rc; } else { cFYI(1, ("Have to revalidate file due to hardlinks")); } } /* save mtime and size */ local_mtime = direntry->d_inode->i_mtime; local_size = direntry->d_inode->i_size; if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) { rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path, direntry->d_sb,xid); if (rc) { cFYI(1, ("error on getting revalidate info %d", rc)); /* if (rc != -ENOENT) rc = 0; */ /* BB should we cache info on certain errors? */ } } else { rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL, direntry->d_sb,xid); if (rc) { cFYI(1, ("error on getting revalidate info %d", rc)); /* if (rc != -ENOENT) rc = 0; */ /* BB should we cache info on certain errors? */ } } /* should we remap certain errors, access denied?, to zero */ /* if not oplocked, we invalidate inode pages if mtime or file size had changed on server */ if (timespec_equal(&local_mtime,&direntry->d_inode->i_mtime) && (local_size == direntry->d_inode->i_size)) { cFYI(1, ("cifs_revalidate - inode unchanged")); } else { /* file may have changed on server */ if (cifsInode->clientCanCacheRead) { /* no need to invalidate inode pages since we were the only ones who could have modified the file and the server copy is staler than ours */ } else { invalidate_inode = TRUE; } } /* can not grab this sem since kernel filesys locking documentation indicates i_mutex may be taken by the kernel on lookup and rename which could deadlock if we grab the i_mutex here as well */ /* mutex_lock(&direntry->d_inode->i_mutex);*/ /* need to write out dirty pages here */ if (direntry->d_inode->i_mapping) { /* do we need to lock inode until after invalidate completes below? */ filemap_fdatawrite(direntry->d_inode->i_mapping); } if (invalidate_inode) { /* shrink_dcache not necessary now that cifs dentry ops are exported for negative dentries */ /* if(S_ISDIR(direntry->d_inode->i_mode)) shrink_dcache_parent(direntry); */ if (S_ISREG(direntry->d_inode->i_mode)) { if (direntry->d_inode->i_mapping) filemap_fdatawait(direntry->d_inode->i_mapping); /* may eventually have to do this for open files too */ if (list_empty(&(cifsInode->openFileList))) { /* changed on server - flush read ahead pages */ cFYI(1, ("Invalidating read ahead data on " "closed file")); invalidate_remote_inode(direntry->d_inode); } } } /* mutex_unlock(&direntry->d_inode->i_mutex); */ kfree(full_path); FreeXid(xid); return rc; } int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) { int err = cifs_revalidate(dentry); if (!err) generic_fillattr(dentry->d_inode, stat); return err; } static int cifs_truncate_page(struct address_space *mapping, loff_t from) { pgoff_t index = from >> PAGE_CACHE_SHIFT; unsigned offset = from & (PAGE_CACHE_SIZE - 1); struct page *page; char *kaddr; int rc = 0; page = grab_cache_page(mapping, index); if (!page) return -ENOMEM; kaddr = kmap_atomic(page, KM_USER0); memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset); flush_dcache_page(page); kunmap_atomic(kaddr, KM_USER0); unlock_page(page); page_cache_release(page); return rc; } int cifs_setattr(struct dentry *direntry, struct iattr *attrs) { int xid; struct cifs_sb_info *cifs_sb; struct cifsTconInfo *pTcon; char *full_path = NULL; int rc = -EACCES; struct cifsFileInfo *open_file = NULL; FILE_BASIC_INFO time_buf; int set_time = FALSE; __u64 mode = 0xFFFFFFFFFFFFFFFFULL; __u64 uid = 0xFFFFFFFFFFFFFFFFULL; __u64 gid = 0xFFFFFFFFFFFFFFFFULL; struct cifsInodeInfo *cifsInode; xid = GetXid(); cFYI(1, ("In cifs_setattr, name = %s attrs->iavalid 0x%x ", direntry->d_name.name, attrs->ia_valid)); cifs_sb = CIFS_SB(direntry->d_inode->i_sb); pTcon = cifs_sb->tcon; if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) { /* check if we have permission to change attrs */ rc = inode_change_ok(direntry->d_inode, attrs); if(rc < 0) { FreeXid(xid); return rc; } else rc = 0; } down(&direntry->d_sb->s_vfs_rename_sem); full_path = build_path_from_dentry(direntry); up(&direntry->d_sb->s_vfs_rename_sem); if (full_path == NULL) { FreeXid(xid); return -ENOMEM; } cifsInode = CIFS_I(direntry->d_inode); /* BB check if we need to refresh inode from server now ? BB */ /* need to flush data before changing file size on server */ filemap_write_and_wait(direntry->d_inode->i_mapping); if (attrs->ia_valid & ATTR_SIZE) { /* To avoid spurious oplock breaks from server, in the case of inodes that we already have open, avoid doing path based setting of file size if we can do it by handle. This keeps our caching token (oplock) and avoids timeouts when the local oplock break takes longer to flush writebehind data than the SMB timeout for the SetPathInfo request would allow */ open_file = find_writable_file(cifsInode); if (open_file) { __u16 nfid = open_file->netfid; __u32 npid = open_file->pid; rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, nfid, npid, FALSE); atomic_dec(&open_file->wrtPending); cFYI(1,("SetFSize for attrs rc = %d", rc)); if(rc == -EINVAL) { int bytes_written; rc = CIFSSMBWrite(xid, pTcon, nfid, 0, attrs->ia_size, &bytes_written, NULL, NULL, 1 /* 45 seconds */); cFYI(1,("Wrt seteof rc %d", rc)); } } else rc = -EINVAL; if (rc != 0) { /* Set file size by pathname rather than by handle either because no valid, writeable file handle for it was found or because there was an error setting it by handle */ rc = CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, FALSE, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc)); if(rc == -EINVAL) { __u16 netfid; int oplock = FALSE; rc = SMBLegacyOpen(xid, pTcon, full_path, FILE_OPEN, SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR, &netfid, &oplock, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc==0) { int bytes_written; rc = CIFSSMBWrite(xid, pTcon, netfid, 0, attrs->ia_size, &bytes_written, NULL, NULL, 1 /* 45 sec */); cFYI(1,("wrt seteof rc %d",rc)); CIFSSMBClose(xid, pTcon, netfid); } } } /* Server is ok setting allocation size implicitly - no need to call: CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, TRUE, cifs_sb->local_nls); */ if (rc == 0) { rc = vmtruncate(direntry->d_inode, attrs->ia_size); cifs_truncate_page(direntry->d_inode->i_mapping, direntry->d_inode->i_size); } else goto cifs_setattr_exit; } if (attrs->ia_valid & ATTR_UID) { cFYI(1, ("UID changed to %d", attrs->ia_uid)); uid = attrs->ia_uid; } if (attrs->ia_valid & ATTR_GID) { cFYI(1, ("GID changed to %d", attrs->ia_gid)); gid = attrs->ia_gid; } time_buf.Attributes = 0; if (attrs->ia_valid & ATTR_MODE) { cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode)); mode = attrs->ia_mode; } if ((cifs_sb->tcon->ses->capabilities & CAP_UNIX) && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID))) rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid, 0 /* dev_t */, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); else if (attrs->ia_valid & ATTR_MODE) { rc = 0; if ((mode & S_IWUGO) == 0) /* not writeable */ { if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0) time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs | ATTR_READONLY); } else if ((mode & S_IWUGO) == S_IWUGO) { if (cifsInode->cifsAttrs & ATTR_READONLY) time_buf.Attributes = cpu_to_le32(cifsInode->cifsAttrs & (~ATTR_READONLY)); } /* BB to be implemented - via Windows security descriptors or streams */ /* CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, uid, gid, cifs_sb->local_nls); */ } if (attrs->ia_valid & ATTR_ATIME) { set_time = TRUE; time_buf.LastAccessTime = cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime)); } else time_buf.LastAccessTime = 0; if (attrs->ia_valid & ATTR_MTIME) { set_time = TRUE; time_buf.LastWriteTime = cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime)); } else time_buf.LastWriteTime = 0; /* Do not set ctime explicitly unless other time stamps are changed explicitly (i.e. by utime() since we would then have a mix of client and server times */ if (set_time && (attrs->ia_valid & ATTR_CTIME)) { set_time = TRUE; /* Although Samba throws this field away it may be useful to Windows - but we do not want to set ctime unless some other timestamp is changing */ cFYI(1, ("CIFS - CTIME changed ")); time_buf.ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime)); } else time_buf.ChangeTime = 0; if (set_time || time_buf.Attributes) { time_buf.CreationTime = 0; /* do not change */ /* In the future we should experiment - try setting timestamps via Handle (SetFileInfo) instead of by path */ if (!(pTcon->ses->flags & CIFS_SES_NT4)) rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); else rc = -EOPNOTSUPP; if (rc == -EOPNOTSUPP) { int oplock = FALSE; __u16 netfid; cFYI(1, ("calling SetFileInfo since SetPathInfo for " "times not supported by this server")); /* BB we could scan to see if we already have it open and pass in pid of opener to function */ rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR, &netfid, &oplock, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc==0) { rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf, netfid); CIFSSMBClose(xid, pTcon, netfid); } else { /* BB For even older servers we could convert time_buf into old DOS style which uses two second granularity */ /* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path, &time_buf, cifs_sb->local_nls); */ } } /* Even if error on time set, no sense failing the call if the server would set the time to a reasonable value anyway, and this check ensures that we are not being called from sys_utimes in which case we ought to fail the call back to the user when the server rejects the call */ if((rc) && (attrs->ia_valid && (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE))) rc = 0; } /* do not need local check to inode_check_ok since the server does that */ if (!rc) rc = inode_setattr(direntry->d_inode, attrs); cifs_setattr_exit: kfree(full_path); FreeXid(xid); return rc; } void cifs_delete_inode(struct inode *inode) { cFYI(1, ("In cifs_delete_inode, inode = 0x%p ", inode)); /* may have to add back in if and when safe distributed caching of directories added e.g. via FindNotify */ }