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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 2025-09-14 11:05:21 -0400
s="hl kwa">this); if (unlikely(!file->f_dentry)) return -ENOMEM; file->f_dentry->d_op = &sockfs_dentry_operations; d_add(file->f_dentry, SOCK_INODE(sock)); file->f_vfsmnt = mntget(sock_mnt); file->f_mapping = file->f_dentry->d_inode->i_mapping; sock->file = file; file->f_op = SOCK_INODE(sock)->i_fop = &socket_file_ops; file->f_mode = FMODE_READ | FMODE_WRITE; file->f_flags = O_RDWR; file->f_pos = 0; file->private_data = sock; return 0; } int sock_map_fd(struct socket *sock) { struct file *newfile; int fd = sock_alloc_fd(&newfile); if (likely(fd >= 0)) { int err = sock_attach_fd(sock, newfile); if (unlikely(err < 0)) { put_filp(newfile); put_unused_fd(fd); return err; } fd_install(fd, newfile); } return fd; } static struct socket *sock_from_file(struct file *file, int *err) { struct inode *inode; struct socket *sock; if (file->f_op == &socket_file_ops) return file->private_data; /* set in sock_map_fd */ inode = file->f_dentry->d_inode; if (!S_ISSOCK(inode->i_mode)) { *err = -ENOTSOCK; return NULL; } sock = SOCKET_I(inode); if (sock->file != file) { printk(KERN_ERR "socki_lookup: socket file changed!\n"); sock->file = file; } return sock; } /** * sockfd_lookup - Go from a file number to its socket slot * @fd: file handle * @err: pointer to an error code return * * The file handle passed in is locked and the socket it is bound * too is returned. If an error occurs the err pointer is overwritten * with a negative errno code and NULL is returned. The function checks * for both invalid handles and passing a handle which is not a socket. * * On a success the socket object pointer is returned. */ struct socket *sockfd_lookup(int fd, int *err) { struct file *file; struct socket *sock; if (!(file = fget(fd))) { *err = -EBADF; return NULL; } sock = sock_from_file(file, err); if (!sock) fput(file); return sock; } static struct socket *sockfd_lookup_light(int fd, int *err, int *fput_needed) { struct file *file; struct socket *sock; *err = -EBADF; file = fget_light(fd, fput_needed); if (file) { sock = sock_from_file(file, err); if (sock) return sock; fput_light(file, *fput_needed); } return NULL; } /** * sock_alloc - allocate a socket * * Allocate a new inode and socket object. The two are bound together * and initialised. The socket is then returned. If we are out of inodes * NULL is returned. */ static struct socket *sock_alloc(void) { struct inode * inode; struct socket * sock; inode = new_inode(sock_mnt->mnt_sb); if (!inode) return NULL; sock = SOCKET_I(inode); inode->i_mode = S_IFSOCK|S_IRWXUGO; inode->i_uid = current->fsuid; inode->i_gid = current->fsgid; get_cpu_var(sockets_in_use)++; put_cpu_var(sockets_in_use); return sock; } /* * In theory you can't get an open on this inode, but /proc provides * a back door. Remember to keep it shut otherwise you'll let the * creepy crawlies in. */ static int sock_no_open(struct inode *irrelevant, struct file *dontcare) { return -ENXIO; } const struct file_operations bad_sock_fops = { .owner = THIS_MODULE, .open = sock_no_open, }; /** * sock_release - close a socket * @sock: socket to close * * The socket is released from the protocol stack if it has a release * callback, and the inode is then released if the socket is bound to * an inode not a file. */ void sock_release(struct socket *sock) { if (sock->ops) { struct module *owner = sock->ops->owner; sock->ops->release(sock); sock->ops = NULL; module_put(owner); } if (sock->fasync_list) printk(KERN_ERR "sock_release: fasync list not empty!\n"); get_cpu_var(sockets_in_use)--; put_cpu_var(sockets_in_use); if (!sock->file) { iput(SOCK_INODE(sock)); return; } sock->file=NULL; } static inline int __sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t size) { struct sock_iocb *si = kiocb_to_siocb(iocb); int err; si->sock = sock; si->scm = NULL; si->msg = msg; si->size = size; err = security_socket_sendmsg(sock, msg, size); if (err) return err; return sock->ops->sendmsg(iocb, sock, msg, size); } int sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t size) { struct kiocb iocb; struct sock_iocb siocb; int ret; init_sync_kiocb(&iocb, NULL); iocb.private = &siocb; ret = __sock_sendmsg(&iocb, sock, msg, size); if (-EIOCBQUEUED == ret) ret = wait_on_sync_kiocb(&iocb); return ret; } int kernel_sendmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec, size_t num, size_t size) { mm_segment_t oldfs = get_fs(); int result; set_fs(KERNEL_DS); /* * the following is safe, since for compiler definitions of kvec and * iovec are identical, yielding the same in-core layout and alignment */ msg->msg_iov = (struct iovec *)vec, msg->msg_iovlen = num; result = sock_sendmsg(sock, msg, size); set_fs(oldfs); return result; } static inline int __sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t size, int flags) { int err; struct sock_iocb *si = kiocb_to_siocb(iocb); si->sock = sock; si->scm = NULL; si->msg = msg; si->size = size; si->flags = flags; err = security_socket_recvmsg(sock, msg, size, flags); if (err) return err; return sock->ops->recvmsg(iocb, sock, msg, size, flags); } int sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t size, int flags) { struct kiocb iocb; struct sock_iocb siocb; int ret; init_sync_kiocb(&iocb, NULL); iocb.private = &siocb; ret = __sock_recvmsg(&iocb, sock, msg, size, flags); if (-EIOCBQUEUED == ret) ret = wait_on_sync_kiocb(&iocb); return ret; } int kernel_recvmsg(struct socket *sock, struct msghdr *msg, struct kvec *vec, size_t num, size_t size, int flags) { mm_segment_t oldfs = get_fs(); int result; set_fs(KERNEL_DS); /* * the following is safe, since for compiler definitions of kvec and * iovec are identical, yielding the same in-core layout and alignment */ msg->msg_iov = (struct iovec *)vec, msg->msg_iovlen = num; result = sock_recvmsg(sock, msg, size, flags); set_fs(oldfs); return result; } static void sock_aio_dtor(struct kiocb *iocb) { kfree(iocb->private); } static ssize_t sock_sendpage(struct file *file, struct page *page, int offset, size_t size, loff_t *ppos, int more) { struct socket *sock; int flags; sock = file->private_data; flags = !(file->f_flags & O_NONBLOCK) ? 0 : MSG_DONTWAIT; if (more) flags |= MSG_MORE; return sock->ops->sendpage(sock, page, offset, size, flags); } static struct sock_iocb *alloc_sock_iocb(struct kiocb *iocb, char __user *ubuf, size_t size, struct sock_iocb *siocb) { if (!is_sync_kiocb(iocb)) { siocb = kmalloc(sizeof(*siocb), GFP_KERNEL); if (!siocb) return NULL; iocb->ki_dtor = sock_aio_dtor; } siocb->kiocb = iocb; siocb->async_iov.iov_base = ubuf; siocb->async_iov.iov_len = size; iocb->private = siocb; return siocb; } static ssize_t do_sock_read(struct msghdr *msg, struct kiocb *iocb, struct file *file, struct iovec *iov, unsigned long nr_segs) { struct socket *sock = file->private_data; size_t size = 0; int i; for (i = 0 ; i < nr_segs ; i++) size += iov[i].iov_len; msg->msg_name = NULL; msg->msg_namelen = 0; msg->msg_control = NULL; msg->msg_controllen = 0; msg->msg_iov = (struct iovec *) iov; msg->msg_iovlen = nr_segs; msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0; return __sock_recvmsg(iocb, sock, msg, size, msg->msg_flags); } static ssize_t sock_readv(struct file *file, const struct iovec *iov, unsigned long nr_segs, loff_t *ppos) { struct kiocb iocb; struct sock_iocb siocb; struct msghdr msg; int ret; init_sync_kiocb(&iocb, NULL); iocb.private = &siocb; ret = do_sock_read(&msg, &iocb, file, (struct iovec *)iov, nr_segs); if (-EIOCBQUEUED == ret) ret = wait_on_sync_kiocb(&iocb); return ret; } static ssize_t sock_aio_read(struct kiocb *iocb, char __user *ubuf, size_t count, loff_t pos) { struct sock_iocb siocb, *x; if (pos != 0) return -ESPIPE; if (count == 0) /* Match SYS5 behaviour */ return 0; x = alloc_sock_iocb(iocb, ubuf, count, &siocb); if (!x) return -ENOMEM; return do_sock_read(&x->async_msg, iocb, iocb->ki_filp, &x->async_iov, 1); } static ssize_t do_sock_write(struct msghdr *msg, struct kiocb *iocb, struct file *file, struct iovec *iov, unsigned long nr_segs) { struct socket *sock = file->private_data; size_t size = 0; int i; for (i = 0 ; i < nr_segs ; i++) size += iov[i].iov_len; msg->msg_name = NULL; msg->msg_namelen = 0; msg->msg_control = NULL; msg->msg_controllen = 0; msg->msg_iov = (struct iovec *) iov; msg->msg_iovlen = nr_segs; msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0; if (sock->type == SOCK_SEQPACKET) msg->msg_flags |= MSG_EOR; return __sock_sendmsg(iocb, sock, msg, size); } static ssize_t sock_writev(struct file *file, const struct iovec *iov, unsigned long nr_segs, loff_t *ppos) { struct msghdr msg; struct kiocb iocb; struct sock_iocb siocb; int ret; init_sync_kiocb(&iocb, NULL); iocb.private = &siocb; ret = do_sock_write(&msg, &iocb, file, (struct iovec *)iov, nr_segs); if (-EIOCBQUEUED == ret) ret = wait_on_sync_kiocb(&iocb); return ret; } static ssize_t sock_aio_write(struct kiocb *iocb, const char __user *ubuf, size_t count, loff_t pos) { struct sock_iocb siocb, *x; if (pos != 0) return -ESPIPE; if (count == 0) /* Match SYS5 behaviour */ return 0; x = alloc_sock_iocb(iocb, (void __user *)ubuf, count, &siocb); if (!x) return -ENOMEM; return do_sock_write(&x->async_msg, iocb, iocb->ki_filp, &x->async_iov, 1); } /* * Atomic setting of ioctl hooks to avoid race * with module unload. */ static DEFINE_MUTEX(br_ioctl_mutex); static int (*br_ioctl_hook)(unsigned int cmd, void __user *arg) = NULL; void brioctl_set(int (*hook)(unsigned int, void __user *)) { mutex_lock(&br_ioctl_mutex); br_ioctl_hook = hook; mutex_unlock(&br_ioctl_mutex); } EXPORT_SYMBOL(brioctl_set); static DEFINE_MUTEX(vlan_ioctl_mutex); static int (*vlan_ioctl_hook)(void __user *arg); void vlan_ioctl_set(int (*hook)(void __user *)) { mutex_lock(&vlan_ioctl_mutex); vlan_ioctl_hook = hook; mutex_unlock(&vlan_ioctl_mutex); } EXPORT_SYMBOL(vlan_ioctl_set); static DEFINE_MUTEX(dlci_ioctl_mutex); static int (*dlci_ioctl_hook)(unsigned int, void __user *); void dlci_ioctl_set(int (*hook)(unsigned int, void __user *)) { mutex_lock(&dlci_ioctl_mutex); dlci_ioctl_hook = hook; mutex_unlock(&dlci_ioctl_mutex); } EXPORT_SYMBOL(dlci_ioctl_set); /* * With an ioctl, arg may well be a user mode pointer, but we don't know * what to do with it - that's up to the protocol still. */ static long sock_ioctl(struct file *file, unsigned cmd, unsigned long arg) { struct socket *sock; void __user *argp = (void __user *)arg; int pid, err; sock = file->private_data; if (cmd >= SIOCDEVPRIVATE && cmd <= (SIOCDEVPRIVATE + 15)) { err = dev_ioctl(cmd, argp); } else #ifdef CONFIG_WIRELESS_EXT if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST) { err = dev_ioctl(cmd, argp); } else #endif /* CONFIG_WIRELESS_EXT */ switch (cmd) { case FIOSETOWN: case SIOCSPGRP: err = -EFAULT; if (get_user(pid, (int __user *)argp)) break; err = f_setown(sock->file, pid, 1); break; case FIOGETOWN: case SIOCGPGRP: err = put_user(sock->file->f_owner.pid, (int __user *)argp); break; case SIOCGIFBR: case SIOCSIFBR: case SIOCBRADDBR: case SIOCBRDELBR: err = -ENOPKG; if (!br_ioctl_hook) request_module("bridge"); mutex_lock(&br_ioctl_mutex); if (br_ioctl_hook) err = br_ioctl_hook(cmd, argp); mutex_unlock(&br_ioctl_mutex); break; case SIOCGIFVLAN: case SIOCSIFVLAN: err = -ENOPKG; if (!vlan_ioctl_hook) request_module("8021q"); mutex_lock(&vlan_ioctl_mutex); if (vlan_ioctl_hook) err = vlan_ioctl_hook(argp); mutex_unlock(&vlan_ioctl_mutex); break; case SIOCGIFDIVERT: case SIOCSIFDIVERT: /* Convert this to call through a hook */ err = divert_ioctl(cmd, argp); break; case SIOCADDDLCI: case SIOCDELDLCI: err = -ENOPKG; if (!dlci_ioctl_hook) request_module("dlci"); if (dlci_ioctl_hook) { mutex_lock(&dlci_ioctl_mutex); err = dlci_ioctl_hook(cmd, argp); mutex_unlock(&dlci_ioctl_mutex); } break; default: err = sock->ops->ioctl(sock, cmd, arg); /* * If this ioctl is unknown try to hand it down * to the NIC driver. */ if (err == -ENOIOCTLCMD) err = dev_ioctl(cmd, argp); break; } return err; } int sock_create_lite(int family, int type, int protocol, struct socket **res) { int err; struct socket *sock = NULL; err = security_socket_create(family, type, protocol, 1); if (err) goto out; sock = sock_alloc(); if (!sock) { err = -ENOMEM; goto out; } security_socket_post_create(sock, family, type, protocol, 1); sock->type = type; out: *res = sock; return err; } /* No kernel lock held - perfect */ static unsigned int sock_poll(struct file *file, poll_table * wait) { struct socket *sock; /* * We can't return errors to poll, so it's either yes or no. */ sock = file->private_data; return sock->ops->poll(file, sock, wait); } static int sock_mmap(struct file * file, struct vm_area_struct * vma) { struct socket *sock = file->private_data; return sock->ops->mmap(file, sock, vma); } static int sock_close(struct inode *inode, struct file *filp) { /* * It was possible the inode is NULL we were * closing an unfinished socket. */ if (!inode) { printk(KERN_DEBUG "sock_close: NULL inode\n"); return 0; } sock_fasync(-1, filp, 0); sock_release(SOCKET_I(inode)); return 0; } /* * Update the socket async list * * Fasync_list locking strategy. * * 1. fasync_list is modified only under process context socket lock * i.e. under semaphore. * 2. fasync_list is used under read_lock(&sk->sk_callback_lock) * or under socket lock. * 3. fasync_list can be used from softirq context, so that * modification under socket lock have to be enhanced with * write_lock_bh(&sk->sk_callback_lock). * --ANK (990710) */ static int sock_fasync(int fd, struct file *filp, int on) { struct fasync_struct *fa, *fna=NULL, **prev; struct socket *sock; struct sock *sk; if (on) { fna = kmalloc(sizeof(struct fasync_struct), GFP_KERNEL); if(fna==NULL) return -ENOMEM; } sock = filp->private_data; if ((sk=sock->sk) == NULL) { kfree(fna); return -EINVAL; } lock_sock(sk); prev=&(sock->fasync_list); for (fa=*prev; fa!=NULL; prev=&fa->fa_next,fa=*prev) if (fa->fa_file==filp) break; if(on) { if(fa!=NULL) { write_lock_bh(&sk->sk_callback_lock); fa->fa_fd=fd; write_unlock_bh(&sk->sk_callback_lock); kfree(fna); goto out; } fna->fa_file=filp; fna->fa_fd=fd; fna->magic=FASYNC_MAGIC; fna->fa_next=sock->fasync_list; write_lock_bh(&sk->sk_callback_lock); sock->fasync_list=fna; write_unlock_bh(&sk->sk_callback_lock); } else { if (fa!=NULL) { write_lock_bh(&sk->sk_callback_lock); *prev=fa->fa_next; write_unlock_bh(&sk->sk_callback_lock); kfree(fa); } } out: release_sock(sock->sk); return 0; } /* This function may be called only under socket lock or callback_lock */ int sock_wake_async(struct socket *sock, int how, int band) { if (!sock || !sock->fasync_list) return -1; switch (how) { case 1: if (test_bit(SOCK_ASYNC_WAITDATA, &sock->flags)) break; goto call_kill; case 2: if (!test_and_clear_bit(SOCK_ASYNC_NOSPACE, &sock->flags)) break; /* fall through */ case 0: call_kill: __kill_fasync(sock->fasync_list, SIGIO, band); break; case 3: __kill_fasync(sock->fasync_list, SIGURG, band); } return 0; } static int __sock_create(int family, int type, int protocol, struct socket **res, int kern) { int err; struct socket *sock; /* * Check protocol is in range */ if (family < 0 || family >= NPROTO) return -EAFNOSUPPORT; if (type < 0 || type >= SOCK_MAX) return -EINVAL; /* Compatibility. This uglymoron is moved from INET layer to here to avoid deadlock in module load. */ if (family == PF_INET && type == SOCK_PACKET) { static int warned; if (!warned) { warned = 1; printk(KERN_INFO "%s uses obsolete (PF_INET,SOCK_PACKET)\n", current->comm); } family = PF_PACKET; } err = security_socket_create(family, type, protocol, kern); if (err) return err; #if defined(CONFIG_KMOD) /* Attempt to load a protocol module if the find failed. * * 12/09/1996 Marcin: But! this makes REALLY only sense, if the user * requested real, full-featured networking support upon configuration. * Otherwise module support will break! */ if (net_families[family]==NULL) { request_module("net-pf-%d",family); } #endif net_family_read_lock(); if (net_families[family] == NULL) { err = -EAFNOSUPPORT; goto out; } /* * Allocate the socket and allow the family to set things up. if * the protocol is 0, the family is instructed to select an appropriate * default. */ if (!(sock = sock_alloc())) { printk(KERN_WARNING "socket: no more sockets\n"); err = -ENFILE; /* Not exactly a match, but its the closest posix thing */ goto out; } sock->type = type; /* * We will call the ->create function, that possibly is in a loadable * module, so we have to bump that loadable module refcnt first. */ err = -EAFNOSUPPORT; if (!try_module_get(net_families[family]->owner)) goto out_release; if ((err = net_families[family]->create(sock, protocol)) < 0) { sock->ops = NULL; goto out_module_put; } /* * Now to bump the refcnt of the [loadable] module that owns this * socket at sock_release time we decrement its refcnt. */ if (!try_module_get(sock->ops->owner)) { sock->ops = NULL; goto out_module_put; } /* * Now that we're done with the ->create function, the [loadable] * module can have its refcnt decremented */ module_put(net_families[family]->owner); *res = sock; security_socket_post_create(sock, family, type, protocol, kern); out: net_family_read_unlock(); return err; out_module_put: module_put(net_families[family]->owner); out_release: sock_release(sock); goto out; } int sock_create(int family, int type, int protocol, struct socket **res) { return __sock_create(family, type, protocol, res, 0); } int sock_create_kern(int family, int type, int protocol, struct socket **res) { return __sock_create(family, type, protocol, res, 1); } asmlinkage long sys_socket(int family, int type, int protocol) { int retval; struct socket *sock; retval = sock_create(family, type, protocol, &sock); if (retval < 0) goto out; retval = sock_map_fd(sock); if (retval < 0) goto out_release; out: /* It may be already another descriptor 8) Not kernel problem. */ return retval; out_release: sock_release(sock); return retval; } /* * Create a pair of connected sockets. */ asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec) { struct socket *sock1, *sock2; int fd1, fd2, err; /* * Obtain the first socket and check if the underlying protocol * supports the socketpair call. */ err = sock_create(family, type, protocol, &sock1); if (err < 0) goto out; err = sock_create(family, type, protocol, &sock2); if (err < 0) goto out_release_1; err = sock1->ops->socketpair(sock1, sock2); if (err < 0) goto out_release_both; fd1 = fd2 = -1; err = sock_map_fd(sock1); if (err < 0) goto out_release_both; fd1 = err; err = sock_map_fd(sock2); if (err < 0) goto out_close_1; fd2 = err; /* fd1 and fd2 may be already another descriptors. * Not kernel problem. */ err = put_user(fd1, &usockvec[0]); if (!err) err = put_user(fd2, &usockvec[1]); if (!err) return 0; sys_close(fd2); sys_close(fd1); return err; out_close_1: sock_release(sock2); sys_close(fd1); return err; out_release_both: sock_release(sock2); out_release_1: sock_release(sock1); out: return err; } /* * Bind a name to a socket. Nothing much to do here since it's * the protocol's responsibility to handle the local address. * * We move the socket address to kernel space before we call * the protocol layer (having also checked the address is ok). */ asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen) { struct socket *sock; char address[MAX_SOCK_ADDR]; int err, fput_needed; if((sock = sockfd_lookup_light(fd, &err, &fput_needed))!=NULL) { if((err=move_addr_to_kernel(umyaddr,addrlen,address))>=0) { err = security_socket_bind(sock, (struct sockaddr *)address, addrlen); if (!err) err = sock->ops->bind(sock, (struct sockaddr *)address, addrlen); } fput_light(sock->file, fput_needed); } return err; } /* * Perform a listen. Basically, we allow the protocol to do anything * necessary for a listen, and if that works, we mark the socket as * ready for listening. */ int sysctl_somaxconn = SOMAXCONN; asmlinkage long sys_listen(int fd, int backlog) { struct socket *sock; int err, fput_needed; if ((sock = sockfd_lookup_light(fd, &err, &fput_needed)) != NULL) { if ((unsigned) backlog > sysctl_somaxconn) backlog = sysctl_somaxconn; err = security_socket_listen(sock, backlog); if (!err) err = sock->ops->listen(sock, backlog); fput_light(sock->file, fput_needed); } return err; } /* * For accept, we attempt to create a new socket, set up the link * with the client, wake up the client, then return the new * connected fd. We collect the address of the connector in kernel * space and move it to user at the very end. This is unclean because * we open the socket then return an error. * * 1003.1g adds the ability to recvmsg() to query connection pending * status to recvmsg. We need to add that support in a way thats * clean when we restucture accept also. */ asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen) { struct socket *sock, *newsock; struct file *newfile; int err, len, newfd, fput_needed; char address[MAX_SOCK_ADDR]; sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out; err = -ENFILE; if (!(newsock = sock_alloc())) goto out_put; newsock->type = sock->type; newsock->ops = sock->ops; /* * We don't need try_module_get here, as the listening socket (sock) * has the protocol module (sock->ops->owner) held. */ __module_get(newsock->ops->owner); newfd = sock_alloc_fd(&newfile); if (unlikely(newfd < 0)) { err = newfd; sock_release(newsock); goto out_put; } err = sock_attach_fd(newsock, newfile); if (err < 0) goto out_fd; err = security_socket_accept(sock, newsock); if (err) goto out_fd; err = sock->ops->accept(sock, newsock, sock->file->f_flags); if (err < 0) goto out_fd; if (upeer_sockaddr) { if(newsock->ops->getname(newsock, (struct sockaddr *)address, &len, 2)<0) { err = -ECONNABORTED; goto out_fd; } err = move_addr_to_user(address, len, upeer_sockaddr, upeer_addrlen); if (err < 0) goto out_fd; } /* File flags are not inherited via accept() unlike another OSes. */ fd_install(newfd, newfile); err = newfd; security_socket_post_accept(sock, newsock); out_put: fput_light(sock->file, fput_needed); out: return err; out_fd: fput(newfile); put_unused_fd(newfd); goto out_put; } /* * Attempt to connect to a socket with the server address. The address * is in user space so we verify it is OK and move it to kernel space. * * For 1003.1g we need to add clean support for a bind to AF_UNSPEC to * break bindings * * NOTE: 1003.1g draft 6.3 is broken with respect to AX.25/NetROM and * other SEQPACKET protocols that take time to connect() as it doesn't * include the -EINPROGRESS status for such sockets. */ asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen) { struct socket *sock; char address[MAX_SOCK_ADDR]; int err, fput_needed; sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out; err = move_addr_to_kernel(uservaddr, addrlen, address); if (err < 0) goto out_put; err = security_socket_connect(sock, (struct sockaddr *)address, addrlen); if (err) goto out_put; err = sock->ops->connect(sock, (struct sockaddr *) address, addrlen, sock->file->f_flags); out_put: fput_light(sock->file, fput_needed); out: return err; } /* * Get the local address ('name') of a socket object. Move the obtained * name to user space. */ asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len) { struct socket *sock; char address[MAX_SOCK_ADDR]; int len, err, fput_needed; sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out; err = security_socket_getsockname(sock); if (err) goto out_put; err = sock->ops->getname(sock, (struct sockaddr *)address, &len, 0); if (err) goto out_put; err = move_addr_to_user(address, len, usockaddr, usockaddr_len); out_put: fput_light(sock->file, fput_needed); out: return err; } /* * Get the remote address ('name') of a socket object. Move the obtained * name to user space. */ asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len) { struct socket *sock; char address[MAX_SOCK_ADDR]; int len, err, fput_needed; if ((sock = sockfd_lookup_light(fd, &err, &fput_needed)) != NULL) { err = security_socket_getpeername(sock); if (err) { fput_light(sock->file, fput_needed); return err; } err = sock->ops->getname(sock, (struct sockaddr *)address, &len, 1); if (!err) err=move_addr_to_user(address,len, usockaddr, usockaddr_len); fput_light(sock->file, fput_needed); } return err; } /* * Send a datagram to a given address. We move the address into kernel * space and check the user space data area is readable before invoking * the protocol. */ asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags, struct sockaddr __user *addr, int addr_len) { struct socket *sock; char address[MAX_SOCK_ADDR]; int err; struct msghdr msg; struct iovec iov; int fput_needed; struct file *sock_file; sock_file = fget_light(fd, &fput_needed); if (!sock_file) return -EBADF; sock = sock_from_file(sock_file, &err); if (!sock) goto out_put; iov.iov_base=buff; iov.iov_len=len; msg.msg_name=NULL; msg.msg_iov=&iov; msg.msg_iovlen=1; msg.msg_control=NULL; msg.msg_controllen=0; msg.msg_namelen=0; if (addr) { err = move_addr_to_kernel(addr, addr_len, address); if (err < 0) goto out_put; msg.msg_name=address; msg.msg_namelen=addr_len; } if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; msg.msg_flags = flags; err = sock_sendmsg(sock, &msg, len); out_put: fput_light(sock_file, fput_needed); return err; } /* * Send a datagram down a socket. */ asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags) { return sys_sendto(fd, buff, len, flags, NULL, 0); } /* * Receive a frame from the socket and optionally record the address of the * sender. We verify the buffers are writable and if needed move the * sender address from kernel to user space. */ asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags, struct sockaddr __user *addr, int __user *addr_len) { struct socket *sock; struct iovec iov; struct msghdr msg; char address[MAX_SOCK_ADDR]; int err,err2; struct file *sock_file; int fput_needed; sock_file = fget_light(fd, &fput_needed); if (!sock_file) return -EBADF; sock = sock_from_file(sock_file, &err); if (!sock) goto out; msg.msg_control=NULL; msg.msg_controllen=0; msg.msg_iovlen=1; msg.msg_iov=&iov; iov.iov_len=size; iov.iov_base=ubuf; msg.msg_name=address; msg.msg_namelen=MAX_SOCK_ADDR; if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; err=sock_recvmsg(sock, &msg, size, flags); if(err >= 0 && addr != NULL) { err2=move_addr_to_user(address, msg.msg_namelen, addr, addr_len); if(err2<0) err=err2; } out: fput_light(sock_file, fput_needed); return err; } /* * Receive a datagram from a socket. */ asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags) { return sys_recvfrom(fd, ubuf, size, flags, NULL, NULL); } /* * Set a socket option. Because we don't know the option lengths we have * to pass the user mode parameter for the protocols to sort out. */ asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen) { int err, fput_needed; struct socket *sock; if (optlen < 0) return -EINVAL; if ((sock = sockfd_lookup_light(fd, &err, &fput_needed)) != NULL) { err = security_socket_setsockopt(sock,level,optname); if (err) goto out_put; if (level == SOL_SOCKET) err=sock_setsockopt(sock,level,optname,optval,optlen); else err=sock->ops->setsockopt(sock, level, optname, optval, optlen); out_put: fput_light(sock->file, fput_needed); } return err; } /* * Get a socket option. Because we don't know the option lengths we have * to pass a user mode parameter for the protocols to sort out. */ asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen) { int err, fput_needed; struct socket *sock; if ((sock = sockfd_lookup_light(fd, &err, &fput_needed)) != NULL) { err = security_socket_getsockopt(sock, level, optname); if (err) goto out_put; if (level == SOL_SOCKET) err=sock_getsockopt(sock,level,optname,optval,optlen); else err=sock->ops->getsockopt(sock, level, optname, optval, optlen); out_put: fput_light(sock->file, fput_needed); } return err; } /* * Shutdown a socket. */ asmlinkage long sys_shutdown(int fd, int how) { int err, fput_needed; struct socket *sock; if ((sock = sockfd_lookup_light(fd, &err, &fput_needed))!=NULL) { err = security_socket_shutdown(sock, how); if (!err) err = sock->ops->shutdown(sock, how); fput_light(sock->file, fput_needed); } return err; } /* A couple of helpful macros for getting the address of the 32/64 bit * fields which are the same type (int / unsigned) on our platforms. */ #define COMPAT_MSG(msg, member) ((MSG_CMSG_COMPAT & flags) ? &msg##_compat->member : &msg->member) #define COMPAT_NAMELEN(msg) COMPAT_MSG(msg, msg_namelen) #define COMPAT_FLAGS(msg) COMPAT_MSG(msg, msg_flags) /* * BSD sendmsg interface */ asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags) { struct compat_msghdr __user *msg_compat = (struct compat_msghdr __user *)msg; struct socket *sock; char address[MAX_SOCK_ADDR]; struct iovec iovstack[UIO_FASTIOV], *iov = iovstack; unsigned char ctl[sizeof(struct cmsghdr) + 20] __attribute__ ((aligned (sizeof(__kernel_size_t)))); /* 20 is size of ipv6_pktinfo */ unsigned char *ctl_buf = ctl; struct msghdr msg_sys; int err, ctl_len, iov_size, total_len; int fput_needed; err = -EFAULT; if (MSG_CMSG_COMPAT & flags) { if (get_compat_msghdr(&msg_sys, msg_compat)) return -EFAULT; } else if (copy_from_user(&msg_sys, msg, sizeof(struct msghdr))) return -EFAULT; sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out; /* do not move before msg_sys is valid */ err = -EMSGSIZE; if (msg_sys.msg_iovlen > UIO_MAXIOV) goto out_put; /* Check whether to allocate the iovec area*/ err = -ENOMEM; iov_size = msg_sys.msg_iovlen * sizeof(struct iovec); if (msg_sys.msg_iovlen > UIO_FASTIOV) { iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL); if (!iov) goto out_put; } /* This will also move the address data into kernel space */ if (MSG_CMSG_COMPAT & flags) { err = verify_compat_iovec(&msg_sys, iov, address, VERIFY_READ); } else err = verify_iovec(&msg_sys, iov, address, VERIFY_READ); if (err < 0) goto out_freeiov; total_len = err; err = -ENOBUFS; if (msg_sys.msg_controllen > INT_MAX) goto out_freeiov; ctl_len = msg_sys.msg_controllen; if ((MSG_CMSG_COMPAT & flags) && ctl_len) { err = cmsghdr_from_user_compat_to_kern(&msg_sys, sock->sk, ctl, sizeof(ctl)); if (err) goto out_freeiov; ctl_buf = msg_sys.msg_control; ctl_len = msg_sys.msg_controllen; } else if (ctl_len) { if (ctl_len > sizeof(ctl)) { ctl_buf = sock_kmalloc(sock->sk, ctl_len, GFP_KERNEL); if (ctl_buf == NULL) goto out_freeiov; } err = -EFAULT; /* * Careful! Before this, msg_sys.msg_control contains a user pointer. * Afterwards, it will be a kernel pointer. Thus the compiler-assisted * checking falls down on this. */ if (copy_from_user(ctl_buf, (void __user *) msg_sys.msg_control, ctl_len)) goto out_freectl; msg_sys.msg_control = ctl_buf; } msg_sys.msg_flags = flags; if (sock->file->f_flags & O_NONBLOCK) msg_sys.msg_flags |= MSG_DONTWAIT; err = sock_sendmsg(sock, &msg_sys, total_len); out_freectl: if (ctl_buf != ctl) sock_kfree_s(sock->sk, ctl_buf, ctl_len); out_freeiov: if (iov != iovstack) sock_kfree_s(sock->sk, iov, iov_size); out_put: fput_light(sock->file, fput_needed); out: return err; } /* * BSD recvmsg interface */ asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags) { struct compat_msghdr __user *msg_compat = (struct compat_msghdr __user *)msg; struct socket *sock; struct iovec iovstack[UIO_FASTIOV]; struct iovec *iov=iovstack; struct msghdr msg_sys; unsigned long cmsg_ptr; int err, iov_size, total_len, len; int fput_needed; /* kernel mode address */ char addr[MAX_SOCK_ADDR]; /* user mode address pointers */ struct sockaddr __user *uaddr; int __user *uaddr_len; if (MSG_CMSG_COMPAT & flags) { if (get_compat_msghdr(&msg_sys, msg_compat)) return -EFAULT; } else if (copy_from_user(&msg_sys,msg,sizeof(struct msghdr))) return -EFAULT; sock = sockfd_lookup_light(fd, &err, &fput_needed); if (!sock) goto out; err = -EMSGSIZE; if (msg_sys.msg_iovlen > UIO_MAXIOV) goto out_put; /* Check whether to allocate the iovec area*/ err = -ENOMEM; iov_size = msg_sys.msg_iovlen * sizeof(struct iovec); if (msg_sys.msg_iovlen > UIO_FASTIOV) { iov = sock_kmalloc(sock->sk, iov_size, GFP_KERNEL); if (!iov) goto out_put; } /* * Save the user-mode address (verify_iovec will change the * kernel msghdr to use the kernel address space) */ uaddr = (void __user *) msg_sys.msg_name; uaddr_len = COMPAT_NAMELEN(msg); if (MSG_CMSG_COMPAT & flags) { err = verify_compat_iovec(&msg_sys, iov, addr, VERIFY_WRITE); } else err = verify_iovec(&msg_sys, iov, addr, VERIFY_WRITE); if (err < 0) goto out_freeiov; total_len=err; cmsg_ptr = (unsigned long)msg_sys.msg_control; msg_sys.msg_flags = 0; if (MSG_CMSG_COMPAT & flags) msg_sys.msg_flags = MSG_CMSG_COMPAT; if (sock->file->f_flags & O_NONBLOCK) flags |= MSG_DONTWAIT; err = sock_recvmsg(sock, &msg_sys, total_len, flags); if (err < 0) goto out_freeiov; len = err; if (uaddr != NULL) { err = move_addr_to_user(addr, msg_sys.msg_namelen, uaddr, uaddr_len); if (err < 0) goto out_freeiov; } err = __put_user((msg_sys.msg_flags & ~MSG_CMSG_COMPAT), COMPAT_FLAGS(msg)); if (err) goto out_freeiov; if (MSG_CMSG_COMPAT & flags) err = __put_user((unsigned long)msg_sys.msg_control-cmsg_ptr, &msg_compat->msg_controllen); else err = __put_user((unsigned long)msg_sys.msg_control-cmsg_ptr, &msg->msg_controllen); if (err) goto out_freeiov; err = len; out_freeiov: if (iov != iovstack) sock_kfree_s(sock->sk, iov, iov_size); out_put: fput_light(sock->file, fput_needed); out: return err; } #ifdef __ARCH_WANT_SYS_SOCKETCALL /* Argument list sizes for sys_socketcall */ #define AL(x) ((x) * sizeof(unsigned long)) static unsigned char nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3), AL(3),AL(3),AL(4),AL(4),AL(4),AL(6), AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)}; #undef AL /* * System call vectors. * * Argument checking cleaned up. Saved 20% in size. * This function doesn't need to set the kernel lock because * it is set by the callees. */ asmlinkage long sys_socketcall(int call, unsigned long __user *args) { unsigned long a[6]; unsigned long a0,a1; int err; if(call<1||call>SYS_RECVMSG) return -EINVAL; /* copy_from_user should be SMP safe. */ if (copy_from_user(a, args, nargs[call])) return -EFAULT; err = audit_socketcall(nargs[call]/sizeof(unsigned long), a); if (err) return err; a0=a[0]; a1=a[1]; switch(call) { case SYS_SOCKET: err = sys_socket(a0,a1,a[2]); break; case SYS_BIND: err = sys_bind(a0,(struct sockaddr __user *)a1, a[2]); break; case SYS_CONNECT: err = sys_connect(a0, (struct sockaddr __user *)a1, a[2]); break; case SYS_LISTEN: err = sys_listen(a0,a1); break; case SYS_ACCEPT: err = sys_accept(a0,(struct sockaddr __user *)a1, (int __user *)a[2]); break; case SYS_GETSOCKNAME: err = sys_getsockname(a0,(struct sockaddr __user *)a1, (int __user *)a[2]); break; case SYS_GETPEERNAME: err = sys_getpeername(a0, (struct sockaddr __user *)a1, (int __user *)a[2]); break; case SYS_SOCKETPAIR: err = sys_socketpair(a0,a1, a[2], (int __user *)a[3]); break; case SYS_SEND: err = sys_send(a0, (void __user *)a1, a[2], a[3]); break; case SYS_SENDTO: err = sys_sendto(a0,(void __user *)a1, a[2], a[3], (struct sockaddr __user *)a[4], a[5]); break; case SYS_RECV: err = sys_recv(a0, (void __user *)a1, a[2], a[3]); break; case SYS_RECVFROM: err = sys_recvfrom(a0, (void __user *)a1, a[2], a[3], (struct sockaddr __user *)a[4], (int __user *)a[5]); break; case SYS_SHUTDOWN: err = sys_shutdown(a0,a1); break; case SYS_SETSOCKOPT: err = sys_setsockopt(a0, a1, a[2], (char __user *)a[3], a[4]); break; case SYS_GETSOCKOPT: err = sys_getsockopt(a0, a1, a[2], (char __user *)a[3], (int __user *)a[4]); break; case SYS_SENDMSG: err = sys_sendmsg(a0, (struct msghdr __user *) a1, a[2]); break; case SYS_RECVMSG: err = sys_recvmsg(a0, (struct msghdr __user *) a1, a[2]); break; default: err = -EINVAL; break; } return err; } #endif /* __ARCH_WANT_SYS_SOCKETCALL */ /* * This function is called by a protocol handler that wants to * advertise its address family, and have it linked into the * SOCKET module. */ int sock_register(struct net_proto_family *ops) { int err; if (ops->family >= NPROTO) { printk(KERN_CRIT "protocol %d >= NPROTO(%d)\n", ops->family, NPROTO); return -ENOBUFS; } net_family_write_lock(); err = -EEXIST; if (net_families[ops->family] == NULL) { net_families[ops->family]=ops; err = 0; } net_family_write_unlock(); printk(KERN_INFO "NET: Registered protocol family %d\n", ops->family); return err; } /* * This function is called by a protocol handler that wants to * remove its address family, and have it unlinked from the * SOCKET module. */ int sock_unregister(int family) { if (family < 0 || family >= NPROTO) return -1; net_family_write_lock(); net_families[family]=NULL; net_family_write_unlock(); printk(KERN_INFO "NET: Unregistered protocol family %d\n", family); return 0; } static int __init sock_init(void) { /* * Initialize sock SLAB cache. */ sk_init(); /* * Initialize skbuff SLAB cache */ skb_init(); /* * Initialize the protocols module. */ init_inodecache(); register_filesystem(&sock_fs_type); sock_mnt = kern_mount(&sock_fs_type); /* The real protocol initialization is performed in later initcalls. */ #ifdef CONFIG_NETFILTER netfilter_init(); #endif return 0; } core_initcall(sock_init); /* early initcall */ #ifdef CONFIG_PROC_FS void socket_seq_show(struct seq_file *seq) { int cpu; int counter = 0; for_each_possible_cpu(cpu) counter += per_cpu(sockets_in_use, cpu); /* It can be negative, by the way. 8) */ if (counter < 0) counter = 0; seq_printf(seq, "sockets: used %d\n", counter); } #endif /* CONFIG_PROC_FS */ #ifdef CONFIG_COMPAT static long compat_sock_ioctl(struct file *file, unsigned cmd, unsigned long arg) { struct socket *sock = file->private_data; int ret = -ENOIOCTLCMD; if (sock->ops->compat_ioctl) ret = sock->ops->compat_ioctl(sock, cmd, arg); return ret; } #endif /* ABI emulation layers need these two */ EXPORT_SYMBOL(move_addr_to_kernel); EXPORT_SYMBOL(move_addr_to_user); EXPORT_SYMBOL(sock_create); EXPORT_SYMBOL(sock_create_kern); EXPORT_SYMBOL(sock_create_lite); EXPORT_SYMBOL(sock_map_fd); EXPORT_SYMBOL(sock_recvmsg); EXPORT_SYMBOL(sock_register); EXPORT_SYMBOL(sock_release); EXPORT_SYMBOL(sock_sendmsg); EXPORT_SYMBOL(sock_unregister); EXPORT_SYMBOL(sock_wake_async); EXPORT_SYMBOL(sockfd_lookup); EXPORT_SYMBOL(kernel_sendmsg); EXPORT_SYMBOL(kernel_recvmsg);
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-14 11:05:21 -0400