X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/39236c6e673c41db228275375ab7fdb0f837b292..3e170ce000f1506b7b5d2c5c7faec85ceabb573d:/bsd/vfs/vfs_fsevents.c?ds=sidebyside diff --git a/bsd/vfs/vfs_fsevents.c b/bsd/vfs/vfs_fsevents.c index 5c816aad5..d2f32bd74 100644 --- a/bsd/vfs/vfs_fsevents.c +++ b/bsd/vfs/vfs_fsevents.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2004-2008 Apple Inc. All rights reserved. + * Copyright (c) 2004-2014 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * @@ -172,14 +172,14 @@ is_ignored_directory(const char *path) { return 0; } -#define IS_TLD(x) strnstr((char *) path, x, MAXPATHLEN) +#define IS_TLD(x) strnstr(__DECONST(char *, path), x, MAXPATHLEN) if (IS_TLD("/.Spotlight-V100/") || IS_TLD("/.MobileBackups/") || IS_TLD("/Backups.backupdb/")) { return 1; } #undef IS_TLD - + return 0; } @@ -392,7 +392,7 @@ add_fsevent(int type, vfs_context_t ctx, ...) // (as long as it's not an event type that can never be the // same as a previous event) // - if (type != FSE_CREATE_FILE && type != FSE_DELETE && type != FSE_RENAME && type != FSE_EXCHANGE && type != FSE_CHOWN) { + if (type != FSE_CREATE_FILE && type != FSE_DELETE && type != FSE_RENAME && type != FSE_EXCHANGE && type != FSE_CHOWN && type != FSE_DOCID_CHANGED && type != FSE_DOCID_CREATED) { void *ptr=NULL; int vid=0, was_str=0, nlen=0; @@ -500,6 +500,7 @@ add_fsevent(int type, vfs_context_t ctx, ...) printf("add_fsevent: kfse_list head %p ; num_pending_rename %d\n", listhead, num_pending_rename); printf("add_fsevent: zalloc sez: %p\n", junkptr); printf("add_fsevent: event_zone info: %d 0x%x\n", ((int *)event_zone)[0], ((int *)event_zone)[1]); + lock_watch_table(); for(ii=0; ii < MAX_WATCHERS; ii++) { if (watcher_table[ii] == NULL) { continue; @@ -511,6 +512,7 @@ add_fsevent(int type, vfs_context_t ctx, ...) watcher_table[ii]->rd, watcher_table[ii]->wr, watcher_table[ii]->eventq_size, watcher_table[ii]->flags); } + unlock_watch_table(); last_print = current_tv; if (junkptr) { @@ -563,6 +565,60 @@ add_fsevent(int type, vfs_context_t ctx, ...) // cur = kfse; + + if (type == FSE_DOCID_CREATED || type == FSE_DOCID_CHANGED) { + uint64_t val; + + // + // These events are special and not like the other events. They only + // have a dev_t, src inode #, dest inode #, and a doc-id. We use the + // fields that we can in the kfse but have to overlay the dest inode + // number and the doc-id on the other fields. + // + + // First the dev_t + arg_type = va_arg(ap, int32_t); + if (arg_type == FSE_ARG_DEV) { + cur->dev = (dev_t)(va_arg(ap, dev_t)); + } else { + cur->dev = (dev_t)0xbadc0de1; + } + + // next the source inode # + arg_type = va_arg(ap, int32_t); + if (arg_type == FSE_ARG_INO) { + cur->ino = (ino64_t)(va_arg(ap, ino64_t)); + } else { + cur->ino = 0xbadc0de2; + } + + // now the dest inode # + arg_type = va_arg(ap, int32_t); + if (arg_type == FSE_ARG_INO) { + val = (ino64_t)(va_arg(ap, ino64_t)); + } else { + val = 0xbadc0de2; + } + // overlay the dest inode number on the str/dest pointer fields + memcpy(&cur->str, &val, sizeof(ino64_t)); + + + // and last the document-id + arg_type = va_arg(ap, int32_t); + if (arg_type == FSE_ARG_INT32) { + val = (uint64_t)va_arg(ap, uint32_t); + } else if (arg_type == FSE_ARG_INT64) { + val = (uint64_t)va_arg(ap, uint64_t); + } else { + val = 0xbadc0de3; + } + + // the docid is 64-bit and overlays the uid/gid fields + memcpy(&cur->uid, &val, sizeof(uint64_t)); + + goto done_with_args; + } + for(arg_type=va_arg(ap, int32_t); arg_type != FSE_ARG_DONE; arg_type=va_arg(ap, int32_t)) switch(arg_type) { @@ -587,6 +643,7 @@ add_fsevent(int type, vfs_context_t ctx, ...) VATTR_WANTED(&va, va_mode); VATTR_WANTED(&va, va_uid); VATTR_WANTED(&va, va_gid); + VATTR_WANTED(&va, va_nlink); if ((ret = vnode_getattr(vp, &va, vfs_context_kernel())) != 0) { // printf("add_fsevent: failed to getattr on vp %p (%d)\n", cur->fref.vp, ret); cur->str = NULL; @@ -599,6 +656,12 @@ add_fsevent(int type, vfs_context_t ctx, ...) cur->mode = (int32_t)vnode_vttoif(vnode_vtype(vp)) | va.va_mode; cur->uid = va.va_uid; cur->gid = va.va_gid; + if (vp->v_flag & VISHARDLINK) { + cur->mode |= FSE_MODE_HLINK; + if ((vp->v_type == VDIR && va.va_dirlinkcount == 0) || (vp->v_type == VREG && va.va_nlink == 0)) { + cur->mode |= FSE_MODE_LAST_HLINK; + } + } // if we haven't gotten the path yet, get it. if (pathbuff == NULL) { @@ -687,12 +750,19 @@ add_fsevent(int type, vfs_context_t ctx, ...) } break; + case FSE_ARG_INT32: { + uint32_t ival = (uint32_t)va_arg(ap, int32_t); + kfse->uid = (ino64_t)ival; + break; + } + default: printf("add_fsevent: unknown type %d\n", arg_type); // just skip one 32-bit word and hope we sync up... (void)va_arg(ap, int32_t); } +done_with_args: va_end(ap); OSBitAndAtomic16(~KFSE_BEING_CREATED, &kfse->flags); @@ -712,7 +782,8 @@ add_fsevent(int type, vfs_context_t ctx, ...) continue; } - if ( watcher->event_list[type] == FSE_REPORT + if ( type < watcher->num_events + && watcher->event_list[type] == FSE_REPORT && watcher_cares_about_dev(watcher, dev)) { if (watcher_add_event(watcher, kfse) != 0) { @@ -835,7 +906,7 @@ release_event_ref(kfs_event *kfse) unlock_fs_event_list(); // if we have a pointer in the union - if (copy.str) { + if (copy.str && copy.type != FSE_DOCID_CHANGED) { if (copy.len == 0) { // and it's not a string panic("%s:%d: no more fref.vp!\n", __FILE__, __LINE__); // vnode_rele_ext(copy.fref.vp, O_EVTONLY, 0); @@ -903,14 +974,7 @@ add_watcher(int8_t *event_list, int32_t num_events, int32_t eventq_size, fs_even lock_watch_table(); - // now update the global list of who's interested in - // events of a particular type... - for(i=0; i < num_events; i++) { - if (event_list[i] != FSE_IGNORE && i < FSE_MAX_EVENTS) { - fs_event_type_watchers[i]++; - } - } - + // find a slot for the new watcher for(i=0; i < MAX_WATCHERS; i++) { if (watcher_table[i] == NULL) { watcher->my_id = i; @@ -919,12 +983,21 @@ add_watcher(int8_t *event_list, int32_t num_events, int32_t eventq_size, fs_even } } - if (i > MAX_WATCHERS) { + if (i >= MAX_WATCHERS) { printf("fsevents: too many watchers!\n"); unlock_watch_table(); + FREE(watcher, M_TEMP); return ENOSPC; } + // now update the global list of who's interested in + // events of a particular type... + for(i=0; i < num_events; i++) { + if (event_list[i] != FSE_IGNORE && i < FSE_MAX_EVENTS) { + fs_event_type_watchers[i]++; + } + } + unlock_watch_table(); *watcher_out = watcher; @@ -1248,6 +1321,36 @@ copy_out_kfse(fs_event_watcher *watcher, kfs_event *kfse, struct uio *uio) copy_again: + if (kfse->type == FSE_DOCID_CHANGED || kfse->type == FSE_DOCID_CREATED) { + dev_t dev = cur->dev; + ino_t ino = cur->ino; + uint64_t ival; + + error = fill_buff(FSE_ARG_DEV, sizeof(dev_t), &dev, evbuff, &evbuff_idx, sizeof(evbuff), uio); + if (error != 0) { + goto get_out; + } + + error = fill_buff(FSE_ARG_INO, sizeof(ino_t), &ino, evbuff, &evbuff_idx, sizeof(evbuff), uio); + if (error != 0) { + goto get_out; + } + + memcpy(&ino, &cur->str, sizeof(ino_t)); + error = fill_buff(FSE_ARG_INO, sizeof(ino_t), &ino, evbuff, &evbuff_idx, sizeof(evbuff), uio); + if (error != 0) { + goto get_out; + } + + memcpy(&ival, &cur->uid, sizeof(uint64_t)); // the docid gets stuffed into the ino field + error = fill_buff(FSE_ARG_INT64, sizeof(uint64_t), &ival, evbuff, &evbuff_idx, sizeof(evbuff), uio); + if (error != 0) { + goto get_out; + } + + goto done; + } + if (cur->str == NULL || cur->str[0] == '\0') { printf("copy_out_kfse:2: empty/short path (%s)\n", cur->str); error = fill_buff(FSE_ARG_STRING, 2, "/", evbuff, &evbuff_idx, sizeof(evbuff), uio); @@ -1432,13 +1535,13 @@ fmod_watch(fs_event_watcher *watcher, struct uio *uio) // its type or which device it is for) // kfse = watcher->event_queue[watcher->rd]; - if (!kfse || kfse->type == FSE_INVALID || kfse->refcount < 1) { + if (!kfse || kfse->type == FSE_INVALID || kfse->type >= watcher->num_events || kfse->refcount < 1) { break; } if (watcher->event_list[kfse->type] == FSE_REPORT && watcher_cares_about_dev(watcher, kfse->dev)) { - if (!(watcher->flags & WATCHER_APPLE_SYSTEM_SERVICE) & is_ignored_directory(kfse->str)) { + if (!(watcher->flags & WATCHER_APPLE_SYSTEM_SERVICE) && kfse->type != FSE_DOCID_CHANGED && is_ignored_directory(kfse->str)) { // If this is not an Apple System Service, skip specified directories // radar://12034844 error = 0; @@ -1539,62 +1642,25 @@ fseventsf_write(__unused struct fileproc *fp, __unused struct uio *uio, } #pragma pack(push, 4) -typedef struct ext_fsevent_dev_filter_args { - uint32_t num_devices; - user_addr_t devices; -} ext_fsevent_dev_filter_args; -#pragma pack(pop) - -#define NEW_FSEVENTS_DEVICE_FILTER _IOW('s', 100, ext_fsevent_dev_filter_args) - -typedef struct old_fsevent_dev_filter_args { - uint32_t num_devices; - int32_t devices; -} old_fsevent_dev_filter_args; - -#define OLD_FSEVENTS_DEVICE_FILTER _IOW('s', 100, old_fsevent_dev_filter_args) - -#if __LP64__ -/* need this in spite of the padding due to alignment of devices */ typedef struct fsevent_dev_filter_args32 { - uint32_t num_devices; - uint32_t devices; - int32_t pad1; + uint32_t num_devices; + user32_addr_t devices; } fsevent_dev_filter_args32; -#endif +typedef struct fsevent_dev_filter_args64 { + uint32_t num_devices; + user64_addr_t devices; +} fsevent_dev_filter_args64; +#pragma pack(pop) + +#define FSEVENTS_DEVICE_FILTER_32 _IOW('s', 100, fsevent_dev_filter_args32) +#define FSEVENTS_DEVICE_FILTER_64 _IOW('s', 100, fsevent_dev_filter_args64) static int fseventsf_ioctl(struct fileproc *fp, u_long cmd, caddr_t data, vfs_context_t ctx) { fsevent_handle *fseh = (struct fsevent_handle *)fp->f_fglob->fg_data; int ret = 0; - ext_fsevent_dev_filter_args *devfilt_args, _devfilt_args; - - if (proc_is64bit(vfs_context_proc(ctx))) { - devfilt_args = (ext_fsevent_dev_filter_args *)data; - } - else if (cmd == OLD_FSEVENTS_DEVICE_FILTER) { - old_fsevent_dev_filter_args *udev_filt_args = (old_fsevent_dev_filter_args *)data; - - devfilt_args = &_devfilt_args; - memset(devfilt_args, 0, sizeof(ext_fsevent_dev_filter_args)); - - devfilt_args->num_devices = udev_filt_args->num_devices; - devfilt_args->devices = CAST_USER_ADDR_T(udev_filt_args->devices); - } - else { -#if __LP64__ - fsevent_dev_filter_args32 *udev_filt_args = (fsevent_dev_filter_args32 *)data; -#else - fsevent_dev_filter_args *udev_filt_args = (fsevent_dev_filter_args *)data; -#endif - - devfilt_args = &_devfilt_args; - memset(devfilt_args, 0, sizeof(ext_fsevent_dev_filter_args)); - - devfilt_args->num_devices = udev_filt_args->num_devices; - devfilt_args->devices = CAST_USER_ADDR_T(udev_filt_args->devices); - } + fsevent_dev_filter_args64 *devfilt_args, _devfilt_args; OSAddAtomic(1, &fseh->active); if (fseh->flags & FSEH_CLOSING) { @@ -1623,8 +1689,29 @@ fseventsf_ioctl(struct fileproc *fp, u_long cmd, caddr_t data, vfs_context_t ctx break; } - case OLD_FSEVENTS_DEVICE_FILTER: - case NEW_FSEVENTS_DEVICE_FILTER: { + case FSEVENTS_DEVICE_FILTER_32: { + if (proc_is64bit(vfs_context_proc(ctx))) { + ret = EINVAL; + break; + } + fsevent_dev_filter_args32 *devfilt_args32 = (fsevent_dev_filter_args32 *)data; + + devfilt_args = &_devfilt_args; + memset(devfilt_args, 0, sizeof(fsevent_dev_filter_args64)); + devfilt_args->num_devices = devfilt_args32->num_devices; + devfilt_args->devices = CAST_USER_ADDR_T(devfilt_args32->devices); + goto handle_dev_filter; + } + + case FSEVENTS_DEVICE_FILTER_64: + if (!proc_is64bit(vfs_context_proc(ctx))) { + ret = EINVAL; + break; + } + devfilt_args = (fsevent_dev_filter_args64 *)data; + + handle_dev_filter: + { int new_num_devices; dev_t *devices_not_to_watch, *tmp=NULL; @@ -2005,7 +2092,7 @@ fseventswrite(__unused dev_t dev, struct uio *uio, __unused int ioflag) lck_mtx_lock(&event_writer_lock); if (write_buffer == NULL) { - if (kmem_alloc(kernel_map, (vm_offset_t *)&write_buffer, WRITE_BUFFER_SIZE)) { + if (kmem_alloc(kernel_map, (vm_offset_t *)&write_buffer, WRITE_BUFFER_SIZE, VM_KERN_MEMORY_FILE)) { lck_mtx_unlock(&event_writer_lock); return ENOMEM; } @@ -2070,21 +2157,22 @@ static const struct fileops fsevents_fops = { fseventsf_drain }; -typedef struct ext_fsevent_clone_args { - user_addr_t event_list; - int32_t num_events; - int32_t event_queue_depth; - user_addr_t fd; -} ext_fsevent_clone_args; +typedef struct fsevent_clone_args32 { + user32_addr_t event_list; + int32_t num_events; + int32_t event_queue_depth; + user32_addr_t fd; +} fsevent_clone_args32; -typedef struct old_fsevent_clone_args { - uint32_t event_list; - int32_t num_events; - int32_t event_queue_depth; - uint32_t fd; -} old_fsevent_clone_args; +typedef struct fsevent_clone_args64 { + user64_addr_t event_list; + int32_t num_events; + int32_t event_queue_depth; + user64_addr_t fd; +} fsevent_clone_args64; -#define OLD_FSEVENTS_CLONE _IOW('s', 1, old_fsevent_clone_args) +#define FSEVENTS_CLONE_32 _IOW('s', 1, fsevent_clone_args32) +#define FSEVENTS_CLONE_64 _IOW('s', 1, fsevent_clone_args64) static int fseventsioctl(__unused dev_t dev, u_long cmd, caddr_t data, __unused int flag, struct proc *p) @@ -2092,38 +2180,32 @@ fseventsioctl(__unused dev_t dev, u_long cmd, caddr_t data, __unused int flag, s struct fileproc *f; int fd, error; fsevent_handle *fseh = NULL; - ext_fsevent_clone_args *fse_clone_args, _fse_clone; + fsevent_clone_args64 *fse_clone_args, _fse_clone; int8_t *event_list; int is64bit = proc_is64bit(p); switch (cmd) { - case OLD_FSEVENTS_CLONE: { - old_fsevent_clone_args *old_args = (old_fsevent_clone_args *)data; + case FSEVENTS_CLONE_32: { + if (is64bit) { + return EINVAL; + } + fsevent_clone_args32 *args32 = (fsevent_clone_args32 *)data; fse_clone_args = &_fse_clone; - memset(fse_clone_args, 0, sizeof(ext_fsevent_clone_args)); + memset(fse_clone_args, 0, sizeof(fsevent_clone_args64)); - fse_clone_args->event_list = CAST_USER_ADDR_T(old_args->event_list); - fse_clone_args->num_events = old_args->num_events; - fse_clone_args->event_queue_depth = old_args->event_queue_depth; - fse_clone_args->fd = CAST_USER_ADDR_T(old_args->fd); + fse_clone_args->event_list = CAST_USER_ADDR_T(args32->event_list); + fse_clone_args->num_events = args32->num_events; + fse_clone_args->event_queue_depth = args32->event_queue_depth; + fse_clone_args->fd = CAST_USER_ADDR_T(args32->fd); goto handle_clone; } - - case FSEVENTS_CLONE: - if (is64bit) { - fse_clone_args = (ext_fsevent_clone_args *)data; - } else { - fsevent_clone_args *ufse_clone = (fsevent_clone_args *)data; - - fse_clone_args = &_fse_clone; - memset(fse_clone_args, 0, sizeof(ext_fsevent_clone_args)); - fse_clone_args->event_list = CAST_USER_ADDR_T(ufse_clone->event_list); - fse_clone_args->num_events = ufse_clone->num_events; - fse_clone_args->event_queue_depth = ufse_clone->event_queue_depth; - fse_clone_args->fd = CAST_USER_ADDR_T(ufse_clone->fd); + case FSEVENTS_CLONE_64: + if (!is64bit) { + return EINVAL; } + fse_clone_args = (fsevent_clone_args64 *)data; handle_clone: if (fse_clone_args->num_events < 0 || fse_clone_args->num_events > 4096) { @@ -2171,6 +2253,7 @@ fseventsioctl(__unused dev_t dev, u_long cmd, caddr_t data, __unused int flag, s error = falloc(p, &f, &fd, vfs_context_current()); if (error) { + remove_watcher(fseh->watcher); FREE(event_list, M_TEMP); FREE(fseh, M_TEMP); return (error);