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BranchCommit messageAuthorAge
archive/unc-master-3.0P-FP: fix BUG_ON releated to priority inheritanceBjoern Brandenburg13 years
archived-2013.1uncachedev: mmap memory that is not cached by CPUsGlenn Elliott12 years
archived-private-masterMerge branch 'wip-2.6.34' into old-private-masterAndrea Bastoni15 years
archived-semi-partMerge branch 'wip-semi-part' of ssh://cvs/cvs/proj/litmus/repo/litmus2010 int...Andrea Bastoni15 years
demoFurther refinementsJonathan Herman14 years
ecrts-pgm-finalMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
ecrts14-pgm-finalMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
gpusync-rtss12Final GPUSync implementation.Glenn Elliott12 years
gpusync/stagingRename IKGLP R2DGLP.Glenn Elliott12 years
linux-tipMerge branch 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/p...Linus Torvalds15 years
litmus2008-patch-seriesadd i386 feather-trace implementationBjoern B. Brandenburg16 years
masterPSN-EDF: use inferred_sporadic_job_release_atBjoern Brandenburg9 years
pgmmake it compileGlenn Elliott12 years
prop/litmus-signalsInfrastructure for Litmus signals.Glenn Elliott13 years
prop/robust-tie-breakFixed bug in edf_higher_prio().Glenn Elliott13 years
stagingFix tracepoint compilation errorFelipe Cerqueira13 years
test9/23/2016Namhoon Kim9 years
tracing-develTest kernel tracing events capabilitiesAndrea Bastoni16 years
v2.6.34-with-arm-patchessmsc911x: Add spinlocks around registers accessCatalin Marinas15 years
v2015.1Add ARM syscall def for get_current_budgetBjoern Brandenburg10 years
wip-2011.2-bbbLitmus core: simplify np-section protocolBjoern B. Brandenburg14 years
wip-2011.2-bbb-traceRefactor sched_trace_log_message() -> debug_trace_log_message()Andrea Bastoni14 years
wip-2012.3-gpuSOBLIV draining support for C-EDF.Glenn Elliott12 years
wip-2012.3-gpu-preportpick up last C-RM fileGlenn Elliott12 years
wip-2012.3-gpu-rtss13Fix critical bug in GPU tracker.Glenn Elliott12 years
wip-2012.3-gpu-sobliv-budget-w-ksharkProper sobliv draining and many bug fixes.Glenn Elliott12 years
wip-aedzl-finalMake it easier to compile AEDZL interfaces in liblitmus.Glenn Elliott15 years
wip-aedzl-revisedAdd sched_trace data for Apative EDZLGlenn Elliott15 years
wip-arbit-deadlineFix compilation bug.Glenn Elliott13 years
wip-aux-tasksDescription of refined aux task inheritance.Glenn Elliott13 years
wip-bbbGSN-EDF & Core: improve debug TRACE'ing for NP sectionsBjoern B. Brandenburg14 years
wip-bbb-prio-donuse correct timestampBjoern B. Brandenburg14 years
wip-better-breakImplement hash-based EDF tie-breaking.Glenn Elliott13 years
wip-binary-heapMake C-EDF work with simplified binheap_deleteGlenn Elliott13 years
wip-budgetAdded support for choices in budget policy enforcement.Glenn Elliott15 years
wip-colorSummarize schedulability with final recordJonathan Herman13 years
wip-color-jlhsched_color: Fixed two bugs causing crashing on experiment restart and a rare...Jonathan Herman13 years
wip-d10-hz1000Enable HZ=1000 on District 10Bjoern B. Brandenburg15 years
wip-default-clusteringFeature: Make default C-EDF clustering compile-time configurable.Glenn Elliott15 years
wip-dissipation-jericksoUpdate from 2.6.36 to 2.6.36.4Jeremy Erickson11 years
wip-dissipation2-jericksoUpdate 2.6.36 to 2.6.36.4Jeremy Erickson11 years
wip-ecrts14-pgmMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
wip-edf-hsblast tested versionJonathan Herman14 years
wip-edf-osLookup table EDF-osJeremy Erickson12 years
wip-edf-tie-breakMerge branch 'wip-edf-tie-break' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus...Glenn Elliott13 years
wip-edzl-critiqueUse hr_timer's active checks instead of having own flag.Glenn Elliott15 years
wip-edzl-finalImplementation of the EDZL scheduler.Glenn Elliott15 years
wip-edzl-revisedClean up comments.Glenn Elliott15 years
wip-eventsAdded support for tracing arbitrary actions.Jonathan Herman15 years
wip-extra-debugDBG: add additional tracingBjoern B. Brandenburg15 years
wip-fix-switch-jericksoAttempt to fix race condition with plugin switchingJeremy Erickson15 years
wip-fix3sched: show length of runqueue clock deactivation in /proc/sched_debugBjoern B. Brandenburg15 years
wip-fmlp-dequeueImprove FMLP queue management.Glenn Elliott14 years
wip-ft-irq-flagFeather-Trace: keep track of interrupt-related interference.Bjoern B. Brandenburg14 years
wip-gpu-cleanupEnable sched_trace log injection from userspaceGlenn Elliott13 years
wip-gpu-interruptsRemove option for threading of all softirqs.Glenn Elliott14 years
wip-gpu-rtas12Generalized GPU cost predictors + EWMA. (untested)Glenn Elliott13 years
wip-gpu-rtss12Final GPUSync implementation.Glenn Elliott13 years
wip-gpu-rtss12-srpexperimental changes to support GPUs under SRPGlenn Elliott13 years
wip-gpusync-mergeCleanup priority tracking for budget enforcement.Glenn Elliott12 years
wip-ikglpMove RSM and IKGLP imp. to own .c filesGlenn Elliott13 years
wip-k-fmlpMerge branch 'mpi-master' into wip-k-fmlpGlenn Elliott14 years
wip-kernel-coloringAdded recolor syscallNamhoon Kim7 years
wip-kernthreadsKludge work-queue processing into klitirqd.Glenn Elliott15 years
wip-klmirqd-to-auxAllow klmirqd threads to be given names.Glenn Elliott13 years
wip-ksharkMerge branch 'mpi-staging' into wip-ksharkJonathan Herman13 years
wip-litmus-3.2Merge commit 'v3.2' into litmus-stagingAndrea Bastoni13 years
wip-litmus2011.2Cleanup: Coding conformance for affinity stuff.Glenn Elliott14 years
wip-litmus3.0-2011.2Feather-Trace: keep track of interrupt-related interference.Bjoern B. Brandenburg14 years
wip-master-2.6.33-rtAvoid deadlock when switching task policy to BACKGROUND (ugly)Andrea Bastoni15 years
wip-mcRemoved ARM-specific hacks which disabled less common mixed-criticality featu...Jonathan Herman12 years
wip-mc-bipasaMC-EDF addedbipasa chattopadhyay13 years
wip-mc-jericksoSplit C/D queuesJeremy Erickson15 years
wip-mc2-cache-slackManually patched mc^2 related codeMing Yang10 years
wip-mcrit-maccosmeticMac Mollison15 years
wip-merge-3.0Prevent Linux to send IPI and queue tasks on remote CPUs.Andrea Bastoni14 years
wip-merge-v3.0Prevent Linux to send IPI and queue tasks on remote CPUs.Andrea Bastoni14 years
wip-migration-affinityNULL affinity dereference in C-EDF.Glenn Elliott14 years
wip-mmap-uncacheshare branch with othersGlenn Elliott13 years
wip-modechangeRTSS 2017 submissionNamhoon Kim8 years
wip-nested-lockingAppears to be working.Bryan Ward12 years
wip-omlp-gedfFirst implementation of G-OMLP.Glenn Elliott15 years
wip-paiSome cleanup of PAIGlenn Elliott14 years
wip-percore-lib9/21/2016Namhoon Kim9 years
wip-performanceCONFIG_DONT_PREEMPT_ON_TIE: Don't preeempt a scheduled task on priority tie.Glenn Elliott14 years
wip-pgmAdd PGM support to C-FLGlenn Elliott12 years
wip-pgm-splitFirst draft of C-FL-splitNamhoon Kim12 years
wip-pm-ovdAdd preemption-and-migration overhead tracing supportAndrea Bastoni15 years
wip-prio-inhP-EDF updated to use the generic pi framework.Glenn Elliott15 years
wip-prioq-dglBUG FIX: Support DGLs with PRIOQ_MUTEXGlenn Elliott13 years
wip-refactored-gedfGeneralizd architecture for GEDF-style scheduelrs to reduce code redundancy.Glenn Elliott15 years
wip-release-master-fixbugfix: release master CPU must signal task was pickedBjoern B. Brandenburg14 years
wip-robust-tie-breakEDF priority tie-breaks.Glenn Elliott13 years
wip-rt-ksharkMove task time accounting into the complete_job method.Jonathan Herman13 years
wip-rtas12-pgmScheduling of PGM jobs.Glenn Elliott13 years
wip-semi-partFix compile error with newer GCCJeremy Erickson12 years
wip-semi-part-edfos-jericksoUse initial CPU set by clientJeremy Erickson12 years
wip-shared-libTODO: Fix condition checks in replicate_page_move_mapping()Namhoon Kim9 years
wip-shared-lib2RTAS 2017 Submission ver.Namhoon Kim9 years
wip-shared-memInitial commit for shared libraryNamhoon Kim9 years
wip-splitting-jericksoFix release behaviorJeremy Erickson13 years
wip-splitting-omlp-jericksoBjoern's Dissertation Code with Priority DonationJeremy Erickson13 years
wip-stage-binheapAn efficient binary heap implementation.Glenn Elliott13 years
wip-sun-portDynamic memory allocation and clean exit for FeatherTraceChristopher Kenna15 years
wip-timer-tracebugfix: C-EDF, clear scheduled field of the correct CPU upon task_exitAndrea Bastoni15 years
wip-tracepointsAdd kernel-style events for sched_trace_XXX() functionsAndrea Bastoni14 years
 
TagDownloadAuthorAge
2015.1commit 8e51b37822...Bjoern Brandenburg10 years
2013.1commit bcaacec1ca...Glenn Elliott12 years
2012.3commit c158b5fbe4...Jonathan Herman13 years
2012.2commit b53c479a0f...Glenn Elliott13 years
2012.1commit 83b11ea1c6...Bjoern B. Brandenburg14 years
rtas12-mc-beta-expcommit 8e236ee20f...Christopher Kenna14 years
2011.1commit d11808b5c6...Christopher Kenna15 years
v2.6.37-rc4commit e8a7e48bb2...Linus Torvalds15 years
v2.6.37-rc3commit 3561d43fd2...Linus Torvalds15 years
v2.6.37-rc2commit e53beacd23...Linus Torvalds15 years
v2.6.37-rc1commit c8ddb2713c...Linus Torvalds15 years
v2.6.36commit f6f94e2ab1...Linus Torvalds15 years
2010.2commit 5c5456402d...Bjoern B. Brandenburg15 years
v2.6.36-rc8commit cd07202cc8...Linus Torvalds15 years
v2.6.36-rc7commit cb655d0f3d...Linus Torvalds15 years
v2.6.36-rc6commit 899611ee7d...Linus Torvalds15 years
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2010.1commit 7c1ff4c544...Andrea Bastoni15 years
v2.6.34commit e40152ee1e...Linus Torvalds15 years
v2.6.33.4commit 4640b4e7d9...Greg Kroah-Hartman15 years
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v2.6.15-rc3commit 624f54be20...Linus Torvalds20 years
v2.6.15-rc2commit 3bedff1d73...Linus Torvalds20 years
v2.6.15-rc1commit cd52d1ee9a...Linus Torvalds20 years
v2.6.14commit 741b2252a5...Linus Torvalds20 years
v2.6.14-rc5commit 93918e9afc...Linus Torvalds20 years
v2.6.14-rc4commit 907a426179...Linus Torvalds20 years
v2.6.14-rc3commit 1c9426e8a5...Linus Torvalds20 years
v2.6.14-rc2commit 676d55ae30...Linus Torvalds20 years
v2.6.14-rc1commit 2f4ba45a75...Linus Torvalds20 years
v2.6.13commit 02b3e4e2d7...Linus Torvalds20 years
v2.6.13-rc7commit 0572e3da3f...Linus Torvalds20 years
v2.6.13-rc6commit 6fc32179de...Linus Torvalds20 years
v2.6.13-rc5commit 9a351e30d7...Linus Torvalds20 years
v2.6.13-rc4commit 6395352334...Linus Torvalds20 years
v2.6.11tree c39ae07f39...
v2.6.11-treetree c39ae07f39...
v2.6.12commit 9ee1c939d1...
v2.6.12-rc2commit 1da177e4c3...
v2.6.12-rc3commit a2755a80f4...
v2.6.12-rc4commit 88d7bd8cb9...
v2.6.12-rc5commit 2a24ab628a...
v2.6.12-rc6commit 7cef5677ef...
v2.6.13-rc1commit 4c91aedb75...
v2.6.13-rc2commit a18bcb7450...
v2.6.13-rc3commit c32511e271...
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-16 04:16:16 -0400
s="hl kwb">struct cifs_tcon *tcon; struct tcon_link *tlink; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); cFYI(1, "Getting info on %s", full_path); tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) return PTR_ERR(tlink); tcon = tlink_tcon(tlink); /* could have done a find first instead but this returns more info */ rc = CIFSSMBUnixQPathInfo(xid, tcon, full_path, &find_data, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); cifs_put_tlink(tlink); if (!rc) { cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb); } else if (rc == -EREMOTE) { cifs_create_dfs_fattr(&fattr, sb); rc = 0; } else { return rc; } /* check for Minshall+French symlinks */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { int tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid); if (tmprc) cFYI(1, "CIFSCheckMFSymlink: %d", tmprc); } if (*pinode == NULL) { /* get new inode */ cifs_fill_uniqueid(sb, &fattr); *pinode = cifs_iget(sb, &fattr); if (!*pinode) rc = -ENOMEM; } else { /* we already have inode, update it */ cifs_fattr_to_inode(*pinode, &fattr); } return rc; } static int cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path, struct cifs_sb_info *cifs_sb, int xid) { int rc; int oplock = 0; __u16 netfid; struct tcon_link *tlink; struct cifs_tcon *tcon; struct cifs_io_parms io_parms; char buf[24]; unsigned int bytes_read; char *pbuf; pbuf = buf; fattr->cf_mode &= ~S_IFMT; if (fattr->cf_eof == 0) { fattr->cf_mode |= S_IFIFO; fattr->cf_dtype = DT_FIFO; return 0; } else if (fattr->cf_eof < 8) { fattr->cf_mode |= S_IFREG; fattr->cf_dtype = DT_REG; return -EINVAL; /* EOPNOTSUPP? */ } tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) return PTR_ERR(tlink); tcon = tlink_tcon(tlink); rc = CIFSSMBOpen(xid, tcon, 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) { int buf_type = CIFS_NO_BUFFER; /* Read header */ io_parms.netfid = netfid; io_parms.pid = current->tgid; io_parms.tcon = tcon; io_parms.offset = 0; io_parms.length = 24; rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, &buf_type); if ((rc == 0) && (bytes_read >= 8)) { if (memcmp("IntxBLK", pbuf, 8) == 0) { cFYI(1, "Block device"); fattr->cf_mode |= S_IFBLK; fattr->cf_dtype = DT_BLK; 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)); fattr->cf_rdev = MKDEV(mjr, mnr); } } else if (memcmp("IntxCHR", pbuf, 8) == 0) { cFYI(1, "Char device"); fattr->cf_mode |= S_IFCHR; fattr->cf_dtype = DT_CHR; 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)); fattr->cf_rdev = MKDEV(mjr, mnr); } } else if (memcmp("IntxLNK", pbuf, 7) == 0) { cFYI(1, "Symlink"); fattr->cf_mode |= S_IFLNK; fattr->cf_dtype = DT_LNK; } else { fattr->cf_mode |= S_IFREG; /* file? */ fattr->cf_dtype = DT_REG; rc = -EOPNOTSUPP; } } else { fattr->cf_mode |= S_IFREG; /* then it is a file */ fattr->cf_dtype = DT_REG; rc = -EOPNOTSUPP; /* or some unknown SFU type */ } CIFSSMBClose(xid, tcon, netfid); } cifs_put_tlink(tlink); return rc; } #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */ /* * Fetch mode bits as provided by SFU. * * FIXME: Doesn't this clobber the type bit we got from cifs_sfu_type ? */ static int cifs_sfu_mode(struct cifs_fattr *fattr, 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; struct tcon_link *tlink; struct cifs_tcon *tcon; tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) return PTR_ERR(tlink); tcon = tlink_tcon(tlink); rc = CIFSSMBQAllEAs(xid, tcon, path, "SETFILEBITS", ea_value, 4 /* size of buf */, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); cifs_put_tlink(tlink); if (rc < 0) return (int)rc; else if (rc > 3) { mode = le32_to_cpu(*((__le32 *)ea_value)); fattr->cf_mode &= ~SFBITS_MASK; cFYI(1, "special bits 0%o org mode 0%o", mode, fattr->cf_mode); fattr->cf_mode = (mode & SFBITS_MASK) | fattr->cf_mode; cFYI(1, "special mode bits 0%o", mode); } return 0; #else return -EOPNOTSUPP; #endif } /* Fill a cifs_fattr struct with info from FILE_ALL_INFO */ static void cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info, struct cifs_sb_info *cifs_sb, bool adjust_tz) { struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); memset(fattr, 0, sizeof(*fattr)); fattr->cf_cifsattrs = le32_to_cpu(info->Attributes); if (info->DeletePending) fattr->cf_flags |= CIFS_FATTR_DELETE_PENDING; if (info->LastAccessTime) fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime); else fattr->cf_atime = CURRENT_TIME; fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime); fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime); if (adjust_tz) { fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj; fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj; } fattr->cf_eof = le64_to_cpu(info->EndOfFile); fattr->cf_bytes = le64_to_cpu(info->AllocationSize); fattr->cf_createtime = le64_to_cpu(info->CreationTime); if (fattr->cf_cifsattrs & ATTR_DIRECTORY) { fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode; fattr->cf_dtype = DT_DIR; } else { fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode; fattr->cf_dtype = DT_REG; /* clear write bits if ATTR_READONLY is set */ if (fattr->cf_cifsattrs & ATTR_READONLY) fattr->cf_mode &= ~(S_IWUGO); } fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks); fattr->cf_uid = cifs_sb->mnt_uid; fattr->cf_gid = cifs_sb->mnt_gid; } int cifs_get_file_info(struct file *filp) { int rc; int xid; FILE_ALL_INFO find_data; struct cifs_fattr fattr; struct inode *inode = filp->f_path.dentry->d_inode; struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); struct cifsFileInfo *cfile = filp->private_data; struct cifs_tcon *tcon = tlink_tcon(cfile->tlink); xid = GetXid(); rc = CIFSSMBQFileInfo(xid, tcon, cfile->netfid, &find_data); if (rc == -EOPNOTSUPP || rc == -EINVAL) { /* * FIXME: legacy server -- fall back to path-based call? * for now, just skip revalidating and mark inode for * immediate reval. */ rc = 0; CIFS_I(inode)->time = 0; goto cgfi_exit; } else if (rc == -EREMOTE) { cifs_create_dfs_fattr(&fattr, inode->i_sb); rc = 0; } else if (rc) goto cgfi_exit; /* * don't bother with SFU junk here -- just mark inode as needing * revalidation. */ cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false); fattr.cf_uniqueid = CIFS_I(inode)->uniqueid; fattr.cf_flags |= CIFS_FATTR_NEED_REVAL; cifs_fattr_to_inode(inode, &fattr); cgfi_exit: FreeXid(xid); return rc; } int cifs_get_inode_info(struct inode **pinode, const unsigned char *full_path, FILE_ALL_INFO *pfindData, struct super_block *sb, int xid, const __u16 *pfid) { int rc = 0, tmprc; struct cifs_tcon *pTcon; struct tcon_link *tlink; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); char *buf = NULL; bool adjustTZ = false; struct cifs_fattr fattr; tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) return PTR_ERR(tlink); pTcon = tlink_tcon(tlink); cFYI(1, "Getting info on %s", full_path); if ((pfindData == NULL) && (*pinode != NULL)) { if (CIFS_I(*pinode)->clientCanCacheRead) { cFYI(1, "No need to revalidate cached inode sizes"); goto cgii_exit; } } /* 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) { rc = -ENOMEM; goto cgii_exit; } pfindData = (FILE_ALL_INFO *)buf; /* could do find first instead but this returns more info */ rc = CIFSSMBQPathInfo(xid, pTcon, full_path, pfindData, 0 /* not legacy */, 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, full_path, pfindData, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); adjustTZ = true; } } if (!rc) { cifs_all_info_to_fattr(&fattr, (FILE_ALL_INFO *) pfindData, cifs_sb, adjustTZ); } else if (rc == -EREMOTE) { cifs_create_dfs_fattr(&fattr, sb); rc = 0; } else { goto cgii_exit; } /* * If an inode wasn't passed in, then get the inode number * * 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. The SNIA * CIFS spec claims that this value is unique within the scope of a * share, and the windows docs hint that it's actually unique * per-machine. * * 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 (*pinode == NULL) { if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { int rc1 = 0; rc1 = CIFSGetSrvInodeNumber(xid, pTcon, full_path, &fattr.cf_uniqueid, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc1 || !fattr.cf_uniqueid) { cFYI(1, "GetSrvInodeNum rc %d", rc1); fattr.cf_uniqueid = iunique(sb, ROOT_I); cifs_autodisable_serverino(cifs_sb); } } else { fattr.cf_uniqueid = iunique(sb, ROOT_I); } } else { fattr.cf_uniqueid = CIFS_I(*pinode)->uniqueid; } /* query for SFU type info if supported and needed */ if (fattr.cf_cifsattrs & ATTR_SYSTEM && cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { tmprc = cifs_sfu_type(&fattr, full_path, cifs_sb, xid); if (tmprc) cFYI(1, "cifs_sfu_type failed: %d", tmprc); } #ifdef CONFIG_CIFS_ACL /* fill in 0777 bits from ACL */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { rc = cifs_acl_to_fattr(cifs_sb, &fattr, *pinode, full_path, pfid); if (rc) { cFYI(1, "%s: Getting ACL failed with error: %d", __func__, rc); goto cgii_exit; } } #endif /* CONFIG_CIFS_ACL */ /* fill in remaining high mode bits e.g. SUID, VTX */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) cifs_sfu_mode(&fattr, full_path, cifs_sb, xid); /* check for Minshall+French symlinks */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid); if (tmprc) cFYI(1, "CIFSCheckMFSymlink: %d", tmprc); } if (!*pinode) { *pinode = cifs_iget(sb, &fattr); if (!*pinode) rc = -ENOMEM; } else { cifs_fattr_to_inode(*pinode, &fattr); } cgii_exit: kfree(buf); cifs_put_tlink(tlink); return rc; } static const struct inode_operations cifs_ipc_inode_ops = { .lookup = cifs_lookup, }; char *cifs_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon) { int pplen = vol->prepath ? strlen(vol->prepath) : 0; int dfsplen; char *full_path = NULL; /* if no prefix path, simply set path to the root of share to "" */ if (pplen == 0) { full_path = kmalloc(1, GFP_KERNEL); if (full_path) full_path[0] = 0; return full_path; } if (tcon->Flags & SMB_SHARE_IS_IN_DFS) dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1); else dfsplen = 0; full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL); if (full_path == NULL) return full_path; if (dfsplen) { strncpy(full_path, tcon->treeName, dfsplen); /* switch slash direction in prepath depending on whether * windows or posix style path names */ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) { int i; for (i = 0; i < dfsplen; i++) { if (full_path[i] == '\\') full_path[i] = '/'; } } } strncpy(full_path + dfsplen, vol->prepath, pplen); full_path[dfsplen + pplen] = 0; /* add trailing null */ return full_path; } static int cifs_find_inode(struct inode *inode, void *opaque) { struct cifs_fattr *fattr = (struct cifs_fattr *) opaque; /* don't match inode with different uniqueid */ if (CIFS_I(inode)->uniqueid != fattr->cf_uniqueid) return 0; /* use createtime like an i_generation field */ if (CIFS_I(inode)->createtime != fattr->cf_createtime) return 0; /* don't match inode of different type */ if ((inode->i_mode & S_IFMT) != (fattr->cf_mode & S_IFMT)) return 0; /* if it's not a directory or has no dentries, then flag it */ if (S_ISDIR(inode->i_mode) && !list_empty(&inode->i_dentry)) fattr->cf_flags |= CIFS_FATTR_INO_COLLISION; return 1; } static int cifs_init_inode(struct inode *inode, void *opaque) { struct cifs_fattr *fattr = (struct cifs_fattr *) opaque; CIFS_I(inode)->uniqueid = fattr->cf_uniqueid; CIFS_I(inode)->createtime = fattr->cf_createtime; return 0; } /* * walk dentry list for an inode and report whether it has aliases that * are hashed. We use this to determine if a directory inode can actually * be used. */ static bool inode_has_hashed_dentries(struct inode *inode) { struct dentry *dentry; spin_lock(&inode->i_lock); list_for_each_entry(dentry, &inode->i_dentry, d_alias) { if (!d_unhashed(dentry) || IS_ROOT(dentry)) { spin_unlock(&inode->i_lock); return true; } } spin_unlock(&inode->i_lock); return false; } /* Given fattrs, get a corresponding inode */ struct inode * cifs_iget(struct super_block *sb, struct cifs_fattr *fattr) { unsigned long hash; struct inode *inode; retry_iget5_locked: cFYI(1, "looking for uniqueid=%llu", fattr->cf_uniqueid); /* hash down to 32-bits on 32-bit arch */ hash = cifs_uniqueid_to_ino_t(fattr->cf_uniqueid); inode = iget5_locked(sb, hash, cifs_find_inode, cifs_init_inode, fattr); if (inode) { /* was there a potentially problematic inode collision? */ if (fattr->cf_flags & CIFS_FATTR_INO_COLLISION) { fattr->cf_flags &= ~CIFS_FATTR_INO_COLLISION; if (inode_has_hashed_dentries(inode)) { cifs_autodisable_serverino(CIFS_SB(sb)); iput(inode); fattr->cf_uniqueid = iunique(sb, ROOT_I); goto retry_iget5_locked; } } cifs_fattr_to_inode(inode, fattr); if (sb->s_flags & MS_NOATIME) inode->i_flags |= S_NOATIME | S_NOCMTIME; if (inode->i_state & I_NEW) { inode->i_ino = hash; if (S_ISREG(inode->i_mode)) inode->i_data.backing_dev_info = sb->s_bdi; #ifdef CONFIG_CIFS_FSCACHE /* initialize per-inode cache cookie pointer */ CIFS_I(inode)->fscache = NULL; #endif unlock_new_inode(inode); } } return inode; } /* gets root inode */ struct inode *cifs_root_iget(struct super_block *sb) { int xid; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); struct inode *inode = NULL; long rc; struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); xid = GetXid(); if (tcon->unix_ext) rc = cifs_get_inode_info_unix(&inode, "", sb, xid); else rc = cifs_get_inode_info(&inode, "", NULL, sb, xid, NULL); if (!inode) { inode = ERR_PTR(rc); goto out; } #ifdef CONFIG_CIFS_FSCACHE /* populate tcon->resource_id */ tcon->resource_id = CIFS_I(inode)->uniqueid; #endif if (rc && tcon->ipc) { cFYI(1, "ipc connection - fake read inode"); inode->i_mode |= S_IFDIR; inode->i_nlink = 2; inode->i_op = &cifs_ipc_inode_ops; inode->i_fop = &simple_dir_operations; inode->i_uid = cifs_sb->mnt_uid; inode->i_gid = cifs_sb->mnt_gid; } else if (rc) { iget_failed(inode); inode = ERR_PTR(rc); } out: /* can not call macro FreeXid here since in a void func * TODO: This is no longer true */ _FreeXid(xid); return inode; } static int cifs_set_file_info(struct inode *inode, struct iattr *attrs, int xid, char *full_path, __u32 dosattr) { int rc; int oplock = 0; __u16 netfid; __u32 netpid; bool set_time = false; struct cifsFileInfo *open_file; struct cifsInodeInfo *cifsInode = CIFS_I(inode); struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); struct tcon_link *tlink = NULL; struct cifs_tcon *pTcon; FILE_BASIC_INFO info_buf; if (attrs == NULL) return -EINVAL; if (attrs->ia_valid & ATTR_ATIME) { set_time = true; info_buf.LastAccessTime = cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime)); } else info_buf.LastAccessTime = 0; if (attrs->ia_valid & ATTR_MTIME) { set_time = true; info_buf.LastWriteTime = cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime)); } else info_buf.LastWriteTime = 0; /* * Samba throws this field away, but windows may actually use it. * Do not set ctime unless other time stamps are changed explicitly * (i.e. by utimes()) since we would then have a mix of client and * server times. */ if (set_time && (attrs->ia_valid & ATTR_CTIME)) { cFYI(1, "CIFS - CTIME changed"); info_buf.ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime)); } else info_buf.ChangeTime = 0; info_buf.CreationTime = 0; /* don't change */ info_buf.Attributes = cpu_to_le32(dosattr); /* * If the file is already open for write, just use that fileid */ open_file = find_writable_file(cifsInode, true); if (open_file) { netfid = open_file->netfid; netpid = open_file->pid; pTcon = tlink_tcon(open_file->tlink); goto set_via_filehandle; } tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) { rc = PTR_ERR(tlink); tlink = NULL; goto out; } pTcon = tlink_tcon(tlink); /* * NT4 apparently returns success on this call, but it doesn't * really work. */ if (!(pTcon->ses->flags & CIFS_SES_NT4)) { rc = CIFSSMBSetPathInfo(xid, pTcon, full_path, &info_buf, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc == 0) { cifsInode->cifsAttrs = dosattr; goto out; } else if (rc != -EOPNOTSUPP && rc != -EINVAL) goto out; } cFYI(1, "calling SetFileInfo since SetPathInfo for " "times not supported by this server"); 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) { if (rc == -EIO) rc = -EINVAL; goto out; } netpid = current->tgid; set_via_filehandle: rc = CIFSSMBSetFileInfo(xid, pTcon, &info_buf, netfid, netpid); if (!rc) cifsInode->cifsAttrs = dosattr; if (open_file == NULL) CIFSSMBClose(xid, pTcon, netfid); else cifsFileInfo_put(open_file); out: if (tlink != NULL) cifs_put_tlink(tlink); return rc; } /* * open the given file (if it isn't already), set the DELETE_ON_CLOSE bit * and rename it to a random name that hopefully won't conflict with * anything else. */ static int cifs_rename_pending_delete(char *full_path, struct dentry *dentry, int xid) { int oplock = 0; int rc; __u16 netfid; struct inode *inode = dentry->d_inode; struct cifsInodeInfo *cifsInode = CIFS_I(inode); struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); struct tcon_link *tlink; struct cifs_tcon *tcon; __u32 dosattr, origattr; FILE_BASIC_INFO *info_buf = NULL; tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) return PTR_ERR(tlink); tcon = tlink_tcon(tlink); rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN, DELETE|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) goto out; origattr = cifsInode->cifsAttrs; if (origattr == 0) origattr |= ATTR_NORMAL; dosattr = origattr & ~ATTR_READONLY; if (dosattr == 0) dosattr |= ATTR_NORMAL; dosattr |= ATTR_HIDDEN; /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */ if (dosattr != origattr) { info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL); if (info_buf == NULL) { rc = -ENOMEM; goto out_close; } info_buf->Attributes = cpu_to_le32(dosattr); rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid, current->tgid); /* although we would like to mark the file hidden if that fails we will still try to rename it */ if (rc != 0) cifsInode->cifsAttrs = dosattr; else dosattr = origattr; /* since not able to change them */ } /* rename the file */ rc = CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc != 0) { rc = -ETXTBSY; goto undo_setattr; } /* try to set DELETE_ON_CLOSE */ if (!cifsInode->delete_pending) { rc = CIFSSMBSetFileDisposition(xid, tcon, true, netfid, current->tgid); /* * some samba versions return -ENOENT when we try to set the * file disposition here. Likely a samba bug, but work around * it for now. This means that some cifsXXX files may hang * around after they shouldn't. * * BB: remove this hack after more servers have the fix */ if (rc == -ENOENT) rc = 0; else if (rc != 0) { rc = -ETXTBSY; goto undo_rename; } cifsInode->delete_pending = true; } out_close: CIFSSMBClose(xid, tcon, netfid); out: kfree(info_buf); cifs_put_tlink(tlink); return rc; /* * reset everything back to the original state. Don't bother * dealing with errors here since we can't do anything about * them anyway. */ undo_rename: CIFSSMBRenameOpenFile(xid, tcon, netfid, dentry->d_name.name, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); undo_setattr: if (dosattr != origattr) { info_buf->Attributes = cpu_to_le32(origattr); if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid, current->tgid)) cifsInode->cifsAttrs = origattr; } goto out_close; } /* * If dentry->d_inode is null (usually meaning the cached dentry * is a negative dentry) then we would attempt a standard SMB delete, but * if that fails we can not attempt the fall back mechanisms on EACCESS * but will return the EACCESS to the caller. Note that the VFS does not call * unlink on negative dentries currently. */ int cifs_unlink(struct inode *dir, struct dentry *dentry) { int rc = 0; int xid; char *full_path = NULL; struct inode *inode = dentry->d_inode; struct cifsInodeInfo *cifs_inode; struct super_block *sb = dir->i_sb; struct cifs_sb_info *cifs_sb = CIFS_SB(sb); struct tcon_link *tlink; struct cifs_tcon *tcon; struct iattr *attrs = NULL; __u32 dosattr = 0, origattr = 0; cFYI(1, "cifs_unlink, dir=0x%p, dentry=0x%p", dir, dentry); tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) return PTR_ERR(tlink); tcon = tlink_tcon(tlink); xid = GetXid(); /* Unlink can be called from rename so we can not take the * sb->s_vfs_rename_mutex here */ full_path = build_path_from_dentry(dentry); if (full_path == NULL) { rc = -ENOMEM; goto unlink_out; } if ((tcon->ses->capabilities & CAP_UNIX) && (CIFS_UNIX_POSIX_PATH_OPS_CAP & le64_to_cpu(tcon->fsUnixInfo.Capability))) { rc = CIFSPOSIXDelFile(xid, tcon, full_path, SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); cFYI(1, "posix del rc %d", rc); if ((rc == 0) || (rc == -ENOENT)) goto psx_del_no_retry; } retry_std_delete: rc = CIFSSMBDelFile(xid, tcon, full_path, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); psx_del_no_retry: if (!rc) { if (inode) drop_nlink(inode); } else if (rc == -ENOENT) { d_drop(dentry); } else if (rc == -ETXTBSY) { rc = cifs_rename_pending_delete(full_path, dentry, xid); if (rc == 0) drop_nlink(inode); } else if ((rc == -EACCES) && (dosattr == 0) && inode) { attrs = kzalloc(sizeof(*attrs), GFP_KERNEL); if (attrs == NULL) { rc = -ENOMEM; goto out_reval; } /* try to reset dos attributes */ cifs_inode = CIFS_I(inode); origattr = cifs_inode->cifsAttrs; if (origattr == 0) origattr |= ATTR_NORMAL; dosattr = origattr & ~ATTR_READONLY; if (dosattr == 0) dosattr |= ATTR_NORMAL; dosattr |= ATTR_HIDDEN; rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr); if (rc != 0) goto out_reval; goto retry_std_delete; } /* undo the setattr if we errored out and it's needed */ if (rc != 0 && dosattr != 0) cifs_set_file_info(inode, attrs, xid, full_path, origattr); out_reval: if (inode) { cifs_inode = CIFS_I(inode); cifs_inode->time = 0; /* will force revalidate to get info when needed */ inode->i_ctime = current_fs_time(sb); } dir->i_ctime = dir->i_mtime = current_fs_time(sb); cifs_inode = CIFS_I(dir); CIFS_I(dir)->time = 0; /* force revalidate of dir as well */ unlink_out: kfree(full_path); kfree(attrs); FreeXid(xid); cifs_put_tlink(tlink); return rc; } int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode) { int rc = 0, tmprc; int xid; struct cifs_sb_info *cifs_sb; struct tcon_link *tlink; struct cifs_tcon *pTcon; char *full_path = NULL; struct inode *newinode = NULL; struct cifs_fattr fattr; cFYI(1, "In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode); cifs_sb = CIFS_SB(inode->i_sb); tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) return PTR_ERR(tlink); pTcon = tlink_tcon(tlink); xid = GetXid(); full_path = build_path_from_dentry(direntry); if (full_path == NULL) { rc = -ENOMEM; goto mkdir_out; } if ((pTcon->ses->capabilities & CAP_UNIX) && (CIFS_UNIX_POSIX_PATH_OPS_CAP & le64_to_cpu(pTcon->fsUnixInfo.Capability))) { u32 oplock = 0; FILE_UNIX_BASIC_INFO *pInfo = kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); if (pInfo == NULL) { rc = -ENOMEM; goto mkdir_out; } mode &= ~current_umask(); rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT, mode, NULL /* netfid */, pInfo, &oplock, full_path, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc == -EOPNOTSUPP) { kfree(pInfo); goto mkdir_retry_old; } else if (rc) { cFYI(1, "posix mkdir returned 0x%x", rc); d_drop(direntry); } else { if (pInfo->Type == cpu_to_le32(-1)) { /* no return info, go query for it */ kfree(pInfo); goto mkdir_get_info; } /*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need to set uid/gid */ inc_nlink(inode); cifs_unix_basic_to_fattr(&fattr, pInfo, cifs_sb); cifs_fill_uniqueid(inode->i_sb, &fattr); newinode = cifs_iget(inode->i_sb, &fattr); if (!newinode) { kfree(pInfo); goto mkdir_get_info; } d_instantiate(direntry, newinode); #ifdef CONFIG_CIFS_DEBUG2 cFYI(1, "instantiated dentry %p %s to inode %p", direntry, direntry->d_name.name, newinode); if (newinode->i_nlink != 2) cFYI(1, "unexpected number of links %d", newinode->i_nlink); #endif } kfree(pInfo); goto mkdir_out; } mkdir_retry_old: /* 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 { mkdir_get_info: inc_nlink(inode); if (pTcon->unix_ext) 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, NULL); d_instantiate(direntry, newinode); /* setting nlink not necessary except in cases where we * failed to get it from the server or was set bogus */ if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2)) direntry->d_inode->i_nlink = 2; mode &= ~current_umask(); /* must turn on setgid bit if parent dir has it */ if (inode->i_mode & S_ISGID) mode |= S_ISGID; if (pTcon->unix_ext) { struct cifs_unix_set_info_args args = { .mode = mode, .ctime = NO_CHANGE_64, .atime = NO_CHANGE_64, .mtime = NO_CHANGE_64, .device = 0, }; if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { args.uid = (__u64)current_fsuid(); if (inode->i_mode & S_ISGID) args.gid = (__u64)inode->i_gid; else args.gid = (__u64)current_fsgid(); } else { args.uid = NO_CHANGE_64; args.gid = NO_CHANGE_64; } CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, &args, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); } else { if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) && (mode & S_IWUGO) == 0) { FILE_BASIC_INFO pInfo; struct cifsInodeInfo *cifsInode; u32 dosattrs; memset(&pInfo, 0, sizeof(pInfo)); cifsInode = CIFS_I(newinode); dosattrs = cifsInode->cifsAttrs|ATTR_READONLY; pInfo.Attributes = cpu_to_le32(dosattrs); tmprc = CIFSSMBSetPathInfo(xid, pTcon, full_path, &pInfo, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (tmprc == 0) cifsInode->cifsAttrs = dosattrs; } if (direntry->d_inode) { if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) direntry->d_inode->i_mode = (mode | S_IFDIR); if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { direntry->d_inode->i_uid = current_fsuid(); if (inode->i_mode & S_ISGID) direntry->d_inode->i_gid = inode->i_gid; else direntry->d_inode->i_gid = current_fsgid(); } } } } mkdir_out: kfree(full_path); FreeXid(xid); cifs_put_tlink(tlink); return rc; } int cifs_rmdir(struct inode *inode, struct dentry *direntry) { int rc = 0; int xid; struct cifs_sb_info *cifs_sb; struct tcon_link *tlink; struct cifs_tcon *pTcon; char *full_path = NULL; struct cifsInodeInfo *cifsInode; cFYI(1, "cifs_rmdir, inode = 0x%p", inode); xid = GetXid(); full_path = build_path_from_dentry(direntry); if (full_path == NULL) { rc = -ENOMEM; goto rmdir_exit; } cifs_sb = CIFS_SB(inode->i_sb); tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) { rc = PTR_ERR(tlink); goto rmdir_exit; } pTcon = tlink_tcon(tlink); rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); cifs_put_tlink(tlink); if (!rc) { drop_nlink(inode); spin_lock(&direntry->d_inode->i_lock); i_size_write(direntry->d_inode, 0); clear_nlink(direntry->d_inode); spin_unlock(&direntry->d_inode->i_lock); } cifsInode = CIFS_I(direntry->d_inode); cifsInode->time = 0; /* force revalidate to go get info when needed */ cifsInode = CIFS_I(inode); cifsInode->time = 0; /* force revalidate to get parent dir info since cached search results now invalid */ direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb); rmdir_exit: kfree(full_path); FreeXid(xid); return rc; } static int cifs_do_rename(int xid, struct dentry *from_dentry, const char *fromPath, struct dentry *to_dentry, const char *toPath) { struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb); struct tcon_link *tlink; struct cifs_tcon *pTcon; __u16 srcfid; int oplock, rc; tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) return PTR_ERR(tlink); pTcon = tlink_tcon(tlink); /* try path-based rename first */ rc = CIFSSMBRename(xid, pTcon, fromPath, toPath, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); /* * don't bother with rename by filehandle unless file is busy and * source Note that cross directory moves do not work with * rename by filehandle to various Windows servers. */ if (rc == 0 || rc != -ETXTBSY) goto do_rename_exit; /* open-file renames don't work across directories */ if (to_dentry->d_parent != from_dentry->d_parent) goto do_rename_exit; /* open the file to be renamed -- we need DELETE perms */ rc = CIFSSMBOpen(xid, pTcon, fromPath, FILE_OPEN, DELETE, CREATE_NOT_DIR, &srcfid, &oplock, NULL, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc == 0) { rc = CIFSSMBRenameOpenFile(xid, pTcon, srcfid, (const char *) to_dentry->d_name.name, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); CIFSSMBClose(xid, pTcon, srcfid); } do_rename_exit: cifs_put_tlink(tlink); return rc; } int cifs_rename(struct inode *source_dir, struct dentry *source_dentry, struct inode *target_dir, struct dentry *target_dentry) { char *fromName = NULL; char *toName = NULL; struct cifs_sb_info *cifs_sb; struct tcon_link *tlink; struct cifs_tcon *tcon; FILE_UNIX_BASIC_INFO *info_buf_source = NULL; FILE_UNIX_BASIC_INFO *info_buf_target; int xid, rc, tmprc; cifs_sb = CIFS_SB(source_dir->i_sb); tlink = cifs_sb_tlink(cifs_sb); if (IS_ERR(tlink)) return PTR_ERR(tlink); tcon = tlink_tcon(tlink); xid = GetXid(); /* * 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_dentry); if (fromName == NULL) { rc = -ENOMEM; goto cifs_rename_exit; } toName = build_path_from_dentry(target_dentry); if (toName == NULL) { rc = -ENOMEM; goto cifs_rename_exit; } rc = cifs_do_rename(xid, source_dentry, fromName, target_dentry, toName); if (rc == -EEXIST && tcon->unix_ext) { /* * Are src and dst hardlinks of same inode? We can * only tell with unix extensions enabled */ info_buf_source = kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); if (info_buf_source == NULL) { rc = -ENOMEM; goto cifs_rename_exit; } info_buf_target = info_buf_source + 1; tmprc = CIFSSMBUnixQPathInfo(xid, tcon, fromName, info_buf_source, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (tmprc != 0) goto unlink_target; tmprc = CIFSSMBUnixQPathInfo(xid, tcon, toName, info_buf_target, cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (tmprc == 0 && (info_buf_source->UniqueId == info_buf_target->UniqueId)) { /* same file, POSIX says that this is a noop */ rc = 0; goto cifs_rename_exit; } } /* else ... BB we could add the same check for Windows by checking the UniqueId via FILE_INTERNAL_INFO */ unlink_target: /* Try unlinking the target dentry if it's not negative */ if (target_dentry->d_inode && (rc == -EACCES || rc == -EEXIST)) { tmprc = cifs_unlink(target_dir, target_dentry); if (tmprc) goto cifs_rename_exit; rc = cifs_do_rename(xid, source_dentry, fromName, target_dentry, toName); } cifs_rename_exit: kfree(info_buf_source); kfree(fromName); kfree(toName); FreeXid(xid); cifs_put_tlink(tlink); return rc; } static bool cifs_inode_needs_reval(struct inode *inode) { struct cifsInodeInfo *cifs_i = CIFS_I(inode); struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); if (cifs_i->clientCanCacheRead) return false; if (!lookupCacheEnabled) return true; if (cifs_i->time == 0) return true; if (!time_in_range(jiffies, cifs_i->time, cifs_i->time + cifs_sb->actimeo)) return true; /* hardlinked files w/ noserverino get "special" treatment */ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) && S_ISREG(inode->i_mode) && inode->i_nlink != 1) return true; return false; } /* * Zap the cache. Called when invalid_mapping flag is set. */ int cifs_invalidate_mapping(struct inode *inode) { int rc = 0; struct cifsInodeInfo *cifs_i = CIFS_I(inode); cifs_i->invalid_mapping = false; if (inode->i_mapping && inode->i_mapping->nrpages != 0) { rc = invalidate_inode_pages2(inode->i_mapping); if (rc) { cERROR(1, "%s: could not invalidate inode %p", __func__, inode); cifs_i->invalid_mapping = true; } } cifs_fscache_reset_inode_cookie(inode); return rc; } int cifs_revalidate_file_attr(struct file *filp) { int rc = 0; struct inode *inode = filp->f_path.dentry->d_inode; struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data; if (!cifs_inode_needs_reval(inode)) return rc; if (tlink_tcon(cfile->tlink)->unix_ext) rc = cifs_get_file_info_unix(filp); else rc = cifs_get_file_info(filp); return rc; } int cifs_revalidate_dentry_attr(struct dentry *dentry) { int xid; int rc = 0; struct inode *inode = dentry->d_inode; struct super_block *sb = dentry->d_sb; char *full_path = NULL; if (inode == NULL) return -ENOENT; if (!cifs_inode_needs_reval(inode)) return rc; xid = GetXid(); /* can not safely grab the rename sem here if rename calls revalidate since that would deadlock */ full_path = build_path_from_dentry(dentry); if (full_path == NULL) { rc = -ENOMEM; goto out; } cFYI(1, "Update attributes: %s inode 0x%p count %d dentry: 0x%p d_time " "%ld jiffies %ld", full_path, inode, inode->i_count.counter, dentry, dentry->d_time, jiffies); if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext) rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid); else rc = cifs_get_inode_info(&inode, full_path, NULL, sb, xid, NULL); out: kfree(full_path); FreeXid(xid);