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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 Elliott11 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...
t seq_file *m, int flag, int fsid, uid_t anonu, uid_t anong, struct nfsd4_fs_locations *fslocs); static int svc_export_show(struct seq_file *m, struct cache_detail *cd, struct cache_head *h) { struct svc_export *exp ; if (h ==NULL) { seq_puts(m, "#path domain(flags)\n"); return 0; } exp = container_of(h, struct svc_export, h); seq_path(m, exp->ex_mnt, exp->ex_dentry, " \t\n\\"); seq_putc(m, '\t'); seq_escape(m, exp->ex_client->name, " \t\n\\"); seq_putc(m, '('); if (test_bit(CACHE_VALID, &h->flags) && !test_bit(CACHE_NEGATIVE, &h->flags)) { exp_flags(m, exp->ex_flags, exp->ex_fsid, exp->ex_anon_uid, exp->ex_anon_gid, &exp->ex_fslocs); if (exp->ex_uuid) { int i; seq_puts(m, ",uuid="); for (i=0; i<16; i++) { if ((i&3) == 0 && i) seq_putc(m, ':'); seq_printf(m, "%02x", exp->ex_uuid[i]); } } } seq_puts(m, ")\n"); return 0; } static int svc_export_match(struct cache_head *a, struct cache_head *b) { struct svc_export *orig = container_of(a, struct svc_export, h); struct svc_export *new = container_of(b, struct svc_export, h); return orig->ex_client == new->ex_client && orig->ex_dentry == new->ex_dentry && orig->ex_mnt == new->ex_mnt; } static void svc_export_init(struct cache_head *cnew, struct cache_head *citem) { struct svc_export *new = container_of(cnew, struct svc_export, h); struct svc_export *item = container_of(citem, struct svc_export, h); kref_get(&item->ex_client->ref); new->ex_client = item->ex_client; new->ex_dentry = dget(item->ex_dentry); new->ex_mnt = mntget(item->ex_mnt); new->ex_path = NULL; new->ex_fslocs.locations = NULL; new->ex_fslocs.locations_count = 0; new->ex_fslocs.migrated = 0; } static void export_update(struct cache_head *cnew, struct cache_head *citem) { struct svc_export *new = container_of(cnew, struct svc_export, h); struct svc_export *item = container_of(citem, struct svc_export, h); new->ex_flags = item->ex_flags; new->ex_anon_uid = item->ex_anon_uid; new->ex_anon_gid = item->ex_anon_gid; new->ex_fsid = item->ex_fsid; new->ex_uuid = item->ex_uuid; item->ex_uuid = NULL; new->ex_path = item->ex_path; item->ex_path = NULL; new->ex_fslocs.locations = item->ex_fslocs.locations; item->ex_fslocs.locations = NULL; new->ex_fslocs.locations_count = item->ex_fslocs.locations_count; item->ex_fslocs.locations_count = 0; new->ex_fslocs.migrated = item->ex_fslocs.migrated; item->ex_fslocs.migrated = 0; } static struct cache_head *svc_export_alloc(void) { struct svc_export *i = kmalloc(sizeof(*i), GFP_KERNEL); if (i) return &i->h; else return NULL; } struct cache_detail svc_export_cache = { .owner = THIS_MODULE, .hash_size = EXPORT_HASHMAX, .hash_table = export_table, .name = "nfsd.export", .cache_put = svc_export_put, .cache_request = svc_export_request, .cache_parse = svc_export_parse, .cache_show = svc_export_show, .match = svc_export_match, .init = svc_export_init, .update = export_update, .alloc = svc_export_alloc, }; static struct svc_export * svc_export_lookup(struct svc_export *exp) { struct cache_head *ch; int hash; hash = hash_ptr(exp->ex_client, EXPORT_HASHBITS); hash ^= hash_ptr(exp->ex_dentry, EXPORT_HASHBITS); hash ^= hash_ptr(exp->ex_mnt, EXPORT_HASHBITS); ch = sunrpc_cache_lookup(&svc_export_cache, &exp->h, hash); if (ch) return container_of(ch, struct svc_export, h); else return NULL; } static struct svc_export * svc_export_update(struct svc_export *new, struct svc_export *old) { struct cache_head *ch; int hash; hash = hash_ptr(old->ex_client, EXPORT_HASHBITS); hash ^= hash_ptr(old->ex_dentry, EXPORT_HASHBITS); hash ^= hash_ptr(old->ex_mnt, EXPORT_HASHBITS); ch = sunrpc_cache_update(&svc_export_cache, &new->h, &old->h, hash); if (ch) return container_of(ch, struct svc_export, h); else return NULL; } static struct svc_expkey * exp_find_key(svc_client *clp, int fsid_type, u32 *fsidv, struct cache_req *reqp) { struct svc_expkey key, *ek; int err; if (!clp) return NULL; key.ek_client = clp; key.ek_fsidtype = fsid_type; memcpy(key.ek_fsid, fsidv, key_len(fsid_type)); ek = svc_expkey_lookup(&key); if (ek != NULL) if ((err = cache_check(&svc_expkey_cache, &ek->h, reqp))) ek = ERR_PTR(err); return ek; } static int exp_set_key(svc_client *clp, int fsid_type, u32 *fsidv, struct svc_export *exp) { struct svc_expkey key, *ek; key.ek_client = clp; key.ek_fsidtype = fsid_type; memcpy(key.ek_fsid, fsidv, key_len(fsid_type)); key.ek_mnt = exp->ex_mnt; key.ek_dentry = exp->ex_dentry; key.h.expiry_time = NEVER; key.h.flags = 0; ek = svc_expkey_lookup(&key); if (ek) ek = svc_expkey_update(&key,ek); if (ek) { cache_put(&ek->h, &svc_expkey_cache); return 0; } return -ENOMEM; } /* * Find the client's export entry matching xdev/xino. */ static inline struct svc_expkey * exp_get_key(svc_client *clp, dev_t dev, ino_t ino) { u32 fsidv[3]; if (old_valid_dev(dev)) { mk_fsid(FSID_DEV, fsidv, dev, ino, 0, NULL); return exp_find_key(clp, FSID_DEV, fsidv, NULL); } mk_fsid(FSID_ENCODE_DEV, fsidv, dev, ino, 0, NULL); return exp_find_key(clp, FSID_ENCODE_DEV, fsidv, NULL); } /* * Find the client's export entry matching fsid */ static inline struct svc_expkey * exp_get_fsid_key(svc_client *clp, int fsid) { u32 fsidv[2]; mk_fsid(FSID_NUM, fsidv, 0, 0, fsid, NULL); return exp_find_key(clp, FSID_NUM, fsidv, NULL); } svc_export * exp_get_by_name(svc_client *clp, struct vfsmount *mnt, struct dentry *dentry, struct cache_req *reqp) { struct svc_export *exp, key; if (!clp) return NULL; key.ex_client = clp; key.ex_mnt = mnt; key.ex_dentry = dentry; exp = svc_export_lookup(&key); if (exp != NULL) { int err; err = cache_check(&svc_export_cache, &exp->h, reqp); switch (err) { case 0: break; case -EAGAIN: case -ETIMEDOUT: exp = ERR_PTR(err); break; default: exp = NULL; } } return exp; } /* * Find the export entry for a given dentry. */ struct svc_export * exp_parent(svc_client *clp, struct vfsmount *mnt, struct dentry *dentry, struct cache_req *reqp) { svc_export *exp; dget(dentry); exp = exp_get_by_name(clp, mnt, dentry, reqp); while (exp == NULL && !IS_ROOT(dentry)) { struct dentry *parent; parent = dget_parent(dentry); dput(dentry); dentry = parent; exp = exp_get_by_name(clp, mnt, dentry, reqp); } dput(dentry); return exp; } /* * Hashtable locking. Write locks are placed only by user processes * wanting to modify export information. * Write locking only done in this file. Read locking * needed externally. */ static DECLARE_RWSEM(hash_sem); void exp_readlock(void) { down_read(&hash_sem); } static inline void exp_writelock(void) { down_write(&hash_sem); } void exp_readunlock(void) { up_read(&hash_sem); } static inline void exp_writeunlock(void) { up_write(&hash_sem); } static void exp_fsid_unhash(struct svc_export *exp) { struct svc_expkey *ek; if ((exp->ex_flags & NFSEXP_FSID) == 0) return; ek = exp_get_fsid_key(exp->ex_client, exp->ex_fsid); if (ek && !IS_ERR(ek)) { ek->h.expiry_time = get_seconds()-1; cache_put(&ek->h, &svc_expkey_cache); } svc_expkey_cache.nextcheck = get_seconds(); } static int exp_fsid_hash(svc_client *clp, struct svc_export *exp) { u32 fsid[2]; if ((exp->ex_flags & NFSEXP_FSID) == 0) return 0; mk_fsid(FSID_NUM, fsid, 0, 0, exp->ex_fsid, NULL); return exp_set_key(clp, FSID_NUM, fsid, exp); } static int exp_hash(struct auth_domain *clp, struct svc_export *exp) { u32 fsid[2]; struct inode *inode = exp->ex_dentry->d_inode; dev_t dev = inode->i_sb->s_dev; if (old_valid_dev(dev)) { mk_fsid(FSID_DEV, fsid, dev, inode->i_ino, 0, NULL); return exp_set_key(clp, FSID_DEV, fsid, exp); } mk_fsid(FSID_ENCODE_DEV, fsid, dev, inode->i_ino, 0, NULL); return exp_set_key(clp, FSID_ENCODE_DEV, fsid, exp); } static void exp_unhash(struct svc_export *exp) { struct svc_expkey *ek; struct inode *inode = exp->ex_dentry->d_inode; ek = exp_get_key(exp->ex_client, inode->i_sb->s_dev, inode->i_ino); if (ek && !IS_ERR(ek)) { ek->h.expiry_time = get_seconds()-1; cache_put(&ek->h, &svc_expkey_cache); } svc_expkey_cache.nextcheck = get_seconds(); } /* * Export a file system. */ int exp_export(struct nfsctl_export *nxp) { svc_client *clp; struct svc_export *exp = NULL; struct svc_export new; struct svc_expkey *fsid_key = NULL; struct nameidata nd; int err; /* Consistency check */ err = -EINVAL; if (!exp_verify_string(nxp->ex_path, NFS_MAXPATHLEN) || !exp_verify_string(nxp->ex_client, NFSCLNT_IDMAX)) goto out; dprintk("exp_export called for %s:%s (%x/%ld fl %x).\n", nxp->ex_client, nxp->ex_path, (unsigned)nxp->ex_dev, (long)nxp->ex_ino, nxp->ex_flags); /* Try to lock the export table for update */ exp_writelock(); /* Look up client info */ if (!(clp = auth_domain_find(nxp->ex_client))) goto out_unlock; /* Look up the dentry */ err = path_lookup(nxp->ex_path, 0, &nd); if (err) goto out_unlock; err = -EINVAL; exp = exp_get_by_name(clp, nd.mnt, nd.dentry, NULL); memset(&new, 0, sizeof(new)); /* must make sure there won't be an ex_fsid clash */ if ((nxp->ex_flags & NFSEXP_FSID) && (fsid_key = exp_get_fsid_key(clp, nxp->ex_dev)) && !IS_ERR(fsid_key) && fsid_key->ek_mnt && (fsid_key->ek_mnt != nd.mnt || fsid_key->ek_dentry != nd.dentry) ) goto finish; if (exp) { /* just a flags/id/fsid update */ exp_fsid_unhash(exp); exp->ex_flags = nxp->ex_flags; exp->ex_anon_uid = nxp->ex_anon_uid; exp->ex_anon_gid = nxp->ex_anon_gid; exp->ex_fsid = nxp->ex_dev; err = exp_fsid_hash(clp, exp); goto finish; } err = check_export(nd.dentry->d_inode, nxp->ex_flags, NULL); if (err) goto finish; err = -ENOMEM; dprintk("nfsd: creating export entry %p for client %p\n", exp, clp); new.h.expiry_time = NEVER; new.h.flags = 0; new.ex_path = kstrdup(nxp->ex_path, GFP_KERNEL); if (!new.ex_path) goto finish; new.ex_client = clp; new.ex_mnt = nd.mnt; new.ex_dentry = nd.dentry; new.ex_flags = nxp->ex_flags; new.ex_anon_uid = nxp->ex_anon_uid; new.ex_anon_gid = nxp->ex_anon_gid; new.ex_fsid = nxp->ex_dev; exp = svc_export_lookup(&new); if (exp) exp = svc_export_update(&new, exp); if (!exp) goto finish; if (exp_hash(clp, exp) || exp_fsid_hash(clp, exp)) { /* failed to create at least one index */ exp_do_unexport(exp); cache_flush(); } else err = 0; finish: if (new.ex_path) kfree(new.ex_path); if (exp) exp_put(exp); if (fsid_key && !IS_ERR(fsid_key)) cache_put(&fsid_key->h, &svc_expkey_cache); if (clp) auth_domain_put(clp); path_release(&nd); out_unlock: exp_writeunlock(); out: return err; } /* * Unexport a file system. The export entry has already * been removed from the client's list of exported fs's. */ static void exp_do_unexport(svc_export *unexp) { unexp->h.expiry_time = get_seconds()-1; svc_export_cache.nextcheck = get_seconds(); exp_unhash(unexp); exp_fsid_unhash(unexp); } /* * unexport syscall. */ int exp_unexport(struct nfsctl_export *nxp) { struct auth_domain *dom; svc_export *exp; struct nameidata nd; int err; /* Consistency check */ if (!exp_verify_string(nxp->ex_path, NFS_MAXPATHLEN) || !exp_verify_string(nxp->ex_client, NFSCLNT_IDMAX)) return -EINVAL; exp_writelock(); err = -EINVAL; dom = auth_domain_find(nxp->ex_client); if (!dom) { dprintk("nfsd: unexport couldn't find %s\n", nxp->ex_client); goto out_unlock; } err = path_lookup(nxp->ex_path, 0, &nd); if (err) goto out_domain; err = -EINVAL; exp = exp_get_by_name(dom, nd.mnt, nd.dentry, NULL); path_release(&nd); if (!exp) goto out_domain; exp_do_unexport(exp); exp_put(exp); err = 0; out_domain: auth_domain_put(dom); cache_flush(); out_unlock: exp_writeunlock(); return err; } /* * Obtain the root fh on behalf of a client. * This could be done in user space, but I feel that it adds some safety * since its harder to fool a kernel module than a user space program. */ int exp_rootfh(svc_client *clp, char *path, struct knfsd_fh *f, int maxsize) { struct svc_export *exp; struct nameidata nd; struct inode *inode; struct svc_fh fh; int err; err = -EPERM; /* NB: we probably ought to check that it's NUL-terminated */ if (path_lookup(path, 0, &nd)) { printk("nfsd: exp_rootfh path not found %s", path); return err; } inode = nd.dentry->d_inode; dprintk("nfsd: exp_rootfh(%s [%p] %s:%s/%ld)\n", path, nd.dentry, clp->name, inode->i_sb->s_id, inode->i_ino); exp = exp_parent(clp, nd.mnt, nd.dentry, NULL); if (IS_ERR(exp)) { err = PTR_ERR(exp); goto out; } if (!exp) { dprintk("nfsd: exp_rootfh export not found.\n"); goto out; } /* * fh must be initialized before calling fh_compose */ fh_init(&fh, maxsize); if (fh_compose(&fh, exp, nd.dentry, NULL)) err = -EINVAL; else err = 0; memcpy(f, &fh.fh_handle, sizeof(struct knfsd_fh)); fh_put(&fh); exp_put(exp); out: path_release(&nd); return err; } struct svc_export * exp_find(struct auth_domain *clp, int fsid_type, u32 *fsidv, struct cache_req *reqp) { struct svc_export *exp; struct svc_expkey *ek = exp_find_key(clp, fsid_type, fsidv, reqp); if (!ek || IS_ERR(ek)) return ERR_PTR(PTR_ERR(ek)); exp = exp_get_by_name(clp, ek->ek_mnt, ek->ek_dentry, reqp); cache_put(&ek->h, &svc_expkey_cache); if (!exp || IS_ERR(exp)) return ERR_PTR(PTR_ERR(exp)); return exp; } /* * Called when we need the filehandle for the root of the pseudofs, * for a given NFSv4 client. The root is defined to be the * export point with fsid==0 */ __be32 exp_pseudoroot(struct auth_domain *clp, struct svc_fh *fhp, struct cache_req *creq) { struct svc_export *exp; __be32 rv; u32 fsidv[2]; mk_fsid(FSID_NUM, fsidv, 0, 0, 0, NULL); exp = exp_find(clp, FSID_NUM, fsidv, creq); if (IS_ERR(exp)) return nfserrno(PTR_ERR(exp)); if (exp == NULL) return nfserr_perm; rv = fh_compose(fhp, exp, exp->ex_dentry, NULL); exp_put(exp); return rv; } /* Iterator */ static void *e_start(struct seq_file *m, loff_t *pos) __acquires(svc_export_cache.hash_lock) { loff_t n = *pos; unsigned hash, export; struct cache_head *ch; exp_readlock(); read_lock(&svc_export_cache.hash_lock); if (!n--) return SEQ_START_TOKEN; hash = n >> 32;