13f6cab07SMatt Macy /*- 23f6cab07SMatt Macy * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 33f6cab07SMatt Macy * 43f6cab07SMatt Macy * Copyright (c) 2016-2018, Matthew Macy <mmacy@freebsd.org> 53f6cab07SMatt Macy * 63f6cab07SMatt Macy * Redistribution and use in source and binary forms, with or without 73f6cab07SMatt Macy * modification, are permitted provided that the following conditions 83f6cab07SMatt Macy * are met: 93f6cab07SMatt Macy * 1. Redistributions of source code must retain the above copyright 103f6cab07SMatt Macy * notice, this list of conditions and the following disclaimer. 113f6cab07SMatt Macy * 2. Redistributions in binary form must reproduce the above copyright 123f6cab07SMatt Macy * notice, this list of conditions and the following disclaimer in the 133f6cab07SMatt Macy * documentation and/or other materials provided with the distribution. 143f6cab07SMatt Macy * 153f6cab07SMatt Macy * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 163f6cab07SMatt Macy * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 173f6cab07SMatt Macy * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 183f6cab07SMatt Macy * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 193f6cab07SMatt Macy * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 203f6cab07SMatt Macy * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 213f6cab07SMatt Macy * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 223f6cab07SMatt Macy * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 233f6cab07SMatt Macy * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 243f6cab07SMatt Macy * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 253f6cab07SMatt Macy * SUCH DAMAGE. 263f6cab07SMatt Macy * 273f6cab07SMatt Macy */ 283f6cab07SMatt Macy 293f6cab07SMatt Macy #include <sys/cdefs.h> 303f6cab07SMatt Macy __FBSDID("$FreeBSD$"); 313f6cab07SMatt Macy 323f6cab07SMatt Macy #include <sys/param.h> 333f6cab07SMatt Macy #include <sys/systm.h> 343f6cab07SMatt Macy #include <sys/queue.h> 353f6cab07SMatt Macy #include <sys/blist.h> 363f6cab07SMatt Macy #include <sys/conf.h> 373f6cab07SMatt Macy #include <sys/exec.h> 383f6cab07SMatt Macy #include <sys/filedesc.h> 393f6cab07SMatt Macy #include <sys/kernel.h> 403f6cab07SMatt Macy #include <sys/linker.h> 413f6cab07SMatt Macy #include <sys/malloc.h> 423f6cab07SMatt Macy #include <sys/mount.h> 433f6cab07SMatt Macy #include <sys/mutex.h> 443f6cab07SMatt Macy #include <sys/proc.h> 453f6cab07SMatt Macy #include <sys/resourcevar.h> 463f6cab07SMatt Macy #include <sys/sbuf.h> 473f6cab07SMatt Macy #include <sys/smp.h> 483f6cab07SMatt Macy #include <sys/socket.h> 493f6cab07SMatt Macy #include <sys/vnode.h> 503f6cab07SMatt Macy #include <sys/bus.h> 513f6cab07SMatt Macy #include <sys/pciio.h> 523f6cab07SMatt Macy 533f6cab07SMatt Macy #include <dev/pci/pcivar.h> 543f6cab07SMatt Macy #include <dev/pci/pcireg.h> 553f6cab07SMatt Macy 563f6cab07SMatt Macy #include <net/if.h> 573f6cab07SMatt Macy 583f6cab07SMatt Macy #include <vm/vm.h> 593f6cab07SMatt Macy #include <vm/pmap.h> 603f6cab07SMatt Macy #include <vm/vm_map.h> 613f6cab07SMatt Macy #include <vm/vm_param.h> 623f6cab07SMatt Macy #include <vm/vm_object.h> 633f6cab07SMatt Macy #include <vm/swap_pager.h> 643f6cab07SMatt Macy 653f6cab07SMatt Macy #include <machine/bus.h> 663f6cab07SMatt Macy 673f6cab07SMatt Macy #include <compat/linux/linux_ioctl.h> 683f6cab07SMatt Macy #include <compat/linux/linux_mib.h> 693f6cab07SMatt Macy #include <compat/linux/linux_util.h> 703f6cab07SMatt Macy #include <fs/pseudofs/pseudofs.h> 713f6cab07SMatt Macy 72f2044a30SJean-Sébastien Pédron #include <asm/atomic.h> 733f6cab07SMatt Macy #include <linux/compat.h> 74f697b943SJake Freeland #include <linux/debugfs.h> 75f697b943SJake Freeland #include <linux/fs.h> 763f6cab07SMatt Macy 773f6cab07SMatt Macy MALLOC_DEFINE(M_DFSINT, "debugfsint", "Linux debugfs internal"); 783f6cab07SMatt Macy 793f6cab07SMatt Macy static struct pfs_node *debugfs_root; 803f6cab07SMatt Macy 813f6cab07SMatt Macy #define DM_SYMLINK 0x1 823f6cab07SMatt Macy #define DM_DIR 0x2 833f6cab07SMatt Macy #define DM_FILE 0x3 843f6cab07SMatt Macy 853f6cab07SMatt Macy struct dentry_meta { 863f6cab07SMatt Macy struct dentry dm_dnode; 873f6cab07SMatt Macy const struct file_operations *dm_fops; 883f6cab07SMatt Macy void *dm_data; 893f6cab07SMatt Macy umode_t dm_mode; 903f6cab07SMatt Macy int dm_type; 913f6cab07SMatt Macy }; 923f6cab07SMatt Macy 933f6cab07SMatt Macy static int 943f6cab07SMatt Macy debugfs_attr(PFS_ATTR_ARGS) 953f6cab07SMatt Macy { 963f6cab07SMatt Macy struct dentry_meta *dm; 973f6cab07SMatt Macy 983f6cab07SMatt Macy dm = pn->pn_data; 993f6cab07SMatt Macy 1003f6cab07SMatt Macy vap->va_mode = dm->dm_mode; 1013f6cab07SMatt Macy return (0); 1023f6cab07SMatt Macy } 1033f6cab07SMatt Macy 1043f6cab07SMatt Macy static int 1053f6cab07SMatt Macy debugfs_destroy(PFS_DESTROY_ARGS) 1063f6cab07SMatt Macy { 1073f6cab07SMatt Macy struct dentry_meta *dm; 1083f6cab07SMatt Macy 1093f6cab07SMatt Macy dm = pn->pn_data; 1103f6cab07SMatt Macy if (dm->dm_type == DM_SYMLINK) 1113f6cab07SMatt Macy free(dm->dm_data, M_DFSINT); 1123f6cab07SMatt Macy 1133f6cab07SMatt Macy free(dm, M_DFSINT); 1143f6cab07SMatt Macy return (0); 1153f6cab07SMatt Macy } 1163f6cab07SMatt Macy 1173f6cab07SMatt Macy static int 1183f6cab07SMatt Macy debugfs_fill(PFS_FILL_ARGS) 1193f6cab07SMatt Macy { 1203f6cab07SMatt Macy struct dentry_meta *d; 12188a29d89SHans Petter Selasky struct linux_file lf = {}; 1223f6cab07SMatt Macy struct vnode vn; 123f697b943SJake Freeland char *buf; 1243f6cab07SMatt Macy int rc; 125f697b943SJake Freeland off_t off = 0; 1263f6cab07SMatt Macy 1273f6cab07SMatt Macy if ((rc = linux_set_current_flags(curthread, M_NOWAIT))) 1283f6cab07SMatt Macy return (rc); 129f697b943SJake Freeland 130f697b943SJake Freeland d = pn->pn_data; 1313f6cab07SMatt Macy vn.v_data = d->dm_data; 132f697b943SJake Freeland 1333f6cab07SMatt Macy rc = d->dm_fops->open(&vn, &lf); 1343f6cab07SMatt Macy if (rc < 0) { 1353f6cab07SMatt Macy #ifdef INVARIANTS 1363f6cab07SMatt Macy printf("%s:%d open failed with %d\n", __FUNCTION__, __LINE__, rc); 1373f6cab07SMatt Macy #endif 1383f6cab07SMatt Macy return (-rc); 1393f6cab07SMatt Macy } 140f697b943SJake Freeland 14168ec2949SHans Petter Selasky rc = -ENODEV; 142f697b943SJake Freeland if (uio->uio_rw == UIO_READ && d->dm_fops->read) { 143f697b943SJake Freeland rc = -ENOMEM; 144f697b943SJake Freeland buf = (char *) malloc(sb->s_size, M_DFSINT, M_ZERO | M_NOWAIT); 145f697b943SJake Freeland if (buf != NULL) { 146f697b943SJake Freeland rc = d->dm_fops->read(&lf, buf, sb->s_size, &off); 147f697b943SJake Freeland if (rc > 0) 148f697b943SJake Freeland sbuf_bcpy(sb, buf, strlen(buf)); 149f697b943SJake Freeland 150f697b943SJake Freeland free(buf, M_DFSINT); 15103f1cf9fSJohannes Lundberg } 152f697b943SJake Freeland } else if (uio->uio_rw == UIO_WRITE && d->dm_fops->write) { 153f697b943SJake Freeland sbuf_finish(sb); 154f697b943SJake Freeland rc = d->dm_fops->write(&lf, sbuf_data(sb), sbuf_len(sb), &off); 155f697b943SJake Freeland } 156f697b943SJake Freeland 1573f6cab07SMatt Macy if (d->dm_fops->release) 1583f6cab07SMatt Macy d->dm_fops->release(&vn, &lf); 1593f6cab07SMatt Macy else 1603f6cab07SMatt Macy single_release(&vn, &lf); 1613f6cab07SMatt Macy 1623f6cab07SMatt Macy if (rc < 0) { 1633f6cab07SMatt Macy #ifdef INVARIANTS 1643f6cab07SMatt Macy printf("%s:%d read/write failed with %d\n", __FUNCTION__, __LINE__, rc); 1653f6cab07SMatt Macy #endif 1663f6cab07SMatt Macy return (-rc); 1673f6cab07SMatt Macy } 1683f6cab07SMatt Macy return (0); 1693f6cab07SMatt Macy } 1703f6cab07SMatt Macy 1713f6cab07SMatt Macy static int 1723f6cab07SMatt Macy debugfs_fill_data(PFS_FILL_ARGS) 1733f6cab07SMatt Macy { 1743f6cab07SMatt Macy struct dentry_meta *dm; 1753f6cab07SMatt Macy 1763f6cab07SMatt Macy dm = pn->pn_data; 1773f6cab07SMatt Macy sbuf_printf(sb, "%s", (char *)dm->dm_data); 1783f6cab07SMatt Macy return (0); 1793f6cab07SMatt Macy } 1803f6cab07SMatt Macy 1813f6cab07SMatt Macy struct dentry * 1823f6cab07SMatt Macy debugfs_create_file(const char *name, umode_t mode, 1833f6cab07SMatt Macy struct dentry *parent, void *data, 1843f6cab07SMatt Macy const struct file_operations *fops) 1853f6cab07SMatt Macy { 1863f6cab07SMatt Macy struct dentry_meta *dm; 1873f6cab07SMatt Macy struct dentry *dnode; 1883f6cab07SMatt Macy struct pfs_node *pnode; 1893f6cab07SMatt Macy int flags; 1903f6cab07SMatt Macy 1913f6cab07SMatt Macy dm = malloc(sizeof(*dm), M_DFSINT, M_NOWAIT | M_ZERO); 1923f6cab07SMatt Macy if (dm == NULL) 1933f6cab07SMatt Macy return (NULL); 1943f6cab07SMatt Macy dnode = &dm->dm_dnode; 1953f6cab07SMatt Macy dm->dm_fops = fops; 1963f6cab07SMatt Macy dm->dm_data = data; 1973f6cab07SMatt Macy dm->dm_mode = mode; 1983f6cab07SMatt Macy dm->dm_type = DM_FILE; 1993f6cab07SMatt Macy if (parent != NULL) 2003f6cab07SMatt Macy pnode = parent->d_pfs_node; 2013f6cab07SMatt Macy else 2023f6cab07SMatt Macy pnode = debugfs_root; 2033f6cab07SMatt Macy 2043f6cab07SMatt Macy flags = fops->write ? PFS_RDWR : PFS_RD; 2053f6cab07SMatt Macy dnode->d_pfs_node = pfs_create_file(pnode, name, debugfs_fill, 2063f6cab07SMatt Macy debugfs_attr, NULL, debugfs_destroy, flags | PFS_NOWAIT); 2073f6cab07SMatt Macy if (dnode->d_pfs_node == NULL) { 2083f6cab07SMatt Macy free(dm, M_DFSINT); 2093f6cab07SMatt Macy return (NULL); 2103f6cab07SMatt Macy } 2113f6cab07SMatt Macy dnode->d_pfs_node->pn_data = dm; 2123f6cab07SMatt Macy 2133f6cab07SMatt Macy return (dnode); 2143f6cab07SMatt Macy } 2153f6cab07SMatt Macy 216*a04aa80eSJean-Sébastien Pédron struct dentry * 217*a04aa80eSJean-Sébastien Pédron debugfs_create_file_size(const char *name, umode_t mode, 218*a04aa80eSJean-Sébastien Pédron struct dentry *parent, void *data, 219*a04aa80eSJean-Sébastien Pédron const struct file_operations *fops, 220*a04aa80eSJean-Sébastien Pédron loff_t file_size __unused) 221*a04aa80eSJean-Sébastien Pédron { 222*a04aa80eSJean-Sébastien Pédron 223*a04aa80eSJean-Sébastien Pédron return debugfs_create_file(name, mode, parent, data, fops); 224*a04aa80eSJean-Sébastien Pédron } 225*a04aa80eSJean-Sébastien Pédron 226f697b943SJake Freeland /* 227f697b943SJake Freeland * NOTE: Files created with the _unsafe moniker will not be protected from 228f697b943SJake Freeland * debugfs core file removals. It is the responsibility of @fops to protect 229f697b943SJake Freeland * its file using debugfs_file_get() and debugfs_file_put(). 230f697b943SJake Freeland * 231f697b943SJake Freeland * FreeBSD's LinuxKPI lindebugfs does not perform file removals at the time 232f697b943SJake Freeland * of writing. Therefore there is no difference between functions with _unsafe 233f697b943SJake Freeland * and functions without _unsafe when using lindebugfs. Functions with _unsafe 234f697b943SJake Freeland * exist only for Linux compatibility. 235f697b943SJake Freeland */ 236f697b943SJake Freeland struct dentry * 237f697b943SJake Freeland debugfs_create_file_unsafe(const char *name, umode_t mode, 238f697b943SJake Freeland struct dentry *parent, void *data, 239f697b943SJake Freeland const struct file_operations *fops) 240f697b943SJake Freeland { 241*a04aa80eSJean-Sébastien Pédron 242f697b943SJake Freeland return (debugfs_create_file(name, mode, parent, data, fops)); 243f697b943SJake Freeland } 244f697b943SJake Freeland 245f697b943SJake Freeland struct dentry * 246f697b943SJake Freeland debugfs_create_mode_unsafe(const char *name, umode_t mode, 247f697b943SJake Freeland struct dentry *parent, void *data, 248f697b943SJake Freeland const struct file_operations *fops, 249f697b943SJake Freeland const struct file_operations *fops_ro, 250f697b943SJake Freeland const struct file_operations *fops_wo) 251f697b943SJake Freeland { 252f697b943SJake Freeland umode_t read = mode & S_IRUGO; 253f697b943SJake Freeland umode_t write = mode & S_IWUGO; 254f697b943SJake Freeland 255f697b943SJake Freeland if (read && !write) 256f697b943SJake Freeland return (debugfs_create_file_unsafe(name, mode, parent, data, fops_ro)); 257f697b943SJake Freeland 258f697b943SJake Freeland if (write && !read) 259f697b943SJake Freeland return (debugfs_create_file_unsafe(name, mode, parent, data, fops_wo)); 260f697b943SJake Freeland 261f697b943SJake Freeland return (debugfs_create_file_unsafe(name, mode, parent, data, fops)); 262f697b943SJake Freeland } 263f697b943SJake Freeland 2643f6cab07SMatt Macy struct dentry * 2653f6cab07SMatt Macy debugfs_create_dir(const char *name, struct dentry *parent) 2663f6cab07SMatt Macy { 2673f6cab07SMatt Macy struct dentry_meta *dm; 2683f6cab07SMatt Macy struct dentry *dnode; 2693f6cab07SMatt Macy struct pfs_node *pnode; 2703f6cab07SMatt Macy 2713f6cab07SMatt Macy dm = malloc(sizeof(*dm), M_DFSINT, M_NOWAIT | M_ZERO); 2723f6cab07SMatt Macy if (dm == NULL) 2733f6cab07SMatt Macy return (NULL); 2743f6cab07SMatt Macy dnode = &dm->dm_dnode; 2753f6cab07SMatt Macy dm->dm_mode = 0700; 2763f6cab07SMatt Macy dm->dm_type = DM_DIR; 2773f6cab07SMatt Macy if (parent != NULL) 2783f6cab07SMatt Macy pnode = parent->d_pfs_node; 2793f6cab07SMatt Macy else 2803f6cab07SMatt Macy pnode = debugfs_root; 2813f6cab07SMatt Macy 2823f6cab07SMatt Macy dnode->d_pfs_node = pfs_create_dir(pnode, name, debugfs_attr, NULL, debugfs_destroy, PFS_RD | PFS_NOWAIT); 2833f6cab07SMatt Macy if (dnode->d_pfs_node == NULL) { 2843f6cab07SMatt Macy free(dm, M_DFSINT); 2853f6cab07SMatt Macy return (NULL); 2863f6cab07SMatt Macy } 2873f6cab07SMatt Macy dnode->d_pfs_node->pn_data = dm; 2883f6cab07SMatt Macy return (dnode); 2893f6cab07SMatt Macy } 2903f6cab07SMatt Macy 2913f6cab07SMatt Macy struct dentry * 2923f6cab07SMatt Macy debugfs_create_symlink(const char *name, struct dentry *parent, 2933f6cab07SMatt Macy const char *dest) 2943f6cab07SMatt Macy { 2953f6cab07SMatt Macy struct dentry_meta *dm; 2963f6cab07SMatt Macy struct dentry *dnode; 2973f6cab07SMatt Macy struct pfs_node *pnode; 2983f6cab07SMatt Macy void *data; 2993f6cab07SMatt Macy 3003f6cab07SMatt Macy data = strdup_flags(dest, M_DFSINT, M_NOWAIT); 3013f6cab07SMatt Macy if (data == NULL) 3023f6cab07SMatt Macy return (NULL); 3033f6cab07SMatt Macy dm = malloc(sizeof(*dm), M_DFSINT, M_NOWAIT | M_ZERO); 3043f6cab07SMatt Macy if (dm == NULL) 3053f6cab07SMatt Macy goto fail1; 3063f6cab07SMatt Macy dnode = &dm->dm_dnode; 3073f6cab07SMatt Macy dm->dm_mode = 0700; 3083f6cab07SMatt Macy dm->dm_type = DM_SYMLINK; 3093f6cab07SMatt Macy dm->dm_data = data; 3103f6cab07SMatt Macy if (parent != NULL) 3113f6cab07SMatt Macy pnode = parent->d_pfs_node; 3123f6cab07SMatt Macy else 3133f6cab07SMatt Macy pnode = debugfs_root; 3143f6cab07SMatt Macy 3153f6cab07SMatt Macy dnode->d_pfs_node = pfs_create_link(pnode, name, &debugfs_fill_data, NULL, NULL, NULL, PFS_NOWAIT); 3163f6cab07SMatt Macy if (dnode->d_pfs_node == NULL) 3173f6cab07SMatt Macy goto fail; 3183f6cab07SMatt Macy dnode->d_pfs_node->pn_data = dm; 3193f6cab07SMatt Macy return (dnode); 3203f6cab07SMatt Macy fail: 3213f6cab07SMatt Macy free(dm, M_DFSINT); 3223f6cab07SMatt Macy fail1: 3233f6cab07SMatt Macy free(data, M_DFSINT); 3243f6cab07SMatt Macy return (NULL); 3253f6cab07SMatt Macy } 3263f6cab07SMatt Macy 3273f6cab07SMatt Macy void 3283f6cab07SMatt Macy debugfs_remove(struct dentry *dnode) 3293f6cab07SMatt Macy { 3303f6cab07SMatt Macy if (dnode == NULL) 3313f6cab07SMatt Macy return; 3323f6cab07SMatt Macy 3333f6cab07SMatt Macy pfs_destroy(dnode->d_pfs_node); 3343f6cab07SMatt Macy } 3353f6cab07SMatt Macy 3363f6cab07SMatt Macy void 3373f6cab07SMatt Macy debugfs_remove_recursive(struct dentry *dnode) 3383f6cab07SMatt Macy { 3393f6cab07SMatt Macy if (dnode == NULL) 3403f6cab07SMatt Macy return; 3413f6cab07SMatt Macy 3423f6cab07SMatt Macy pfs_destroy(dnode->d_pfs_node); 3433f6cab07SMatt Macy } 3443f6cab07SMatt Macy 3453f6cab07SMatt Macy static int 346f697b943SJake Freeland debugfs_bool_get(void *data, uint64_t *ullval) 347f697b943SJake Freeland { 348f697b943SJake Freeland bool *bval = data; 349f697b943SJake Freeland 350f697b943SJake Freeland if (*bval) 351f697b943SJake Freeland *ullval = 1; 352f697b943SJake Freeland else 353f697b943SJake Freeland *ullval = 0; 354f697b943SJake Freeland 355f697b943SJake Freeland return (0); 356f697b943SJake Freeland } 357f697b943SJake Freeland 358f697b943SJake Freeland static int 359f697b943SJake Freeland debugfs_bool_set(void *data, uint64_t ullval) 360f697b943SJake Freeland { 361f697b943SJake Freeland bool *bval = data; 362f697b943SJake Freeland 363f697b943SJake Freeland if (ullval) 364f697b943SJake Freeland *bval = 1; 365f697b943SJake Freeland else 366f697b943SJake Freeland *bval = 0; 367f697b943SJake Freeland 368f697b943SJake Freeland return (0); 369f697b943SJake Freeland } 370f697b943SJake Freeland 371f697b943SJake Freeland DEFINE_DEBUGFS_ATTRIBUTE(fops_bool, debugfs_bool_get, debugfs_bool_set, "%llu\n"); 372f697b943SJake Freeland DEFINE_DEBUGFS_ATTRIBUTE(fops_bool_ro, debugfs_bool_get, NULL, "%llu\n"); 373f697b943SJake Freeland DEFINE_DEBUGFS_ATTRIBUTE(fops_bool_wo, NULL, debugfs_bool_set, "%llu\n"); 374f697b943SJake Freeland 375f697b943SJake Freeland void 376f697b943SJake Freeland debugfs_create_bool(const char *name, umode_t mode, struct dentry *parent, bool *value) 377f697b943SJake Freeland { 378976aa07aSJean-Sébastien Pédron 379f697b943SJake Freeland debugfs_create_mode_unsafe(name, mode, parent, value, &fops_bool, 380f697b943SJake Freeland &fops_bool_ro, &fops_bool_wo); 381f697b943SJake Freeland } 382f697b943SJake Freeland 3830fce2dc1SBjoern A. Zeeb 3840fce2dc1SBjoern A. Zeeb static int 3850fce2dc1SBjoern A. Zeeb debugfs_u8_get(void *data, uint64_t *value) 3860fce2dc1SBjoern A. Zeeb { 3870fce2dc1SBjoern A. Zeeb uint8_t *u8data = data; 3880fce2dc1SBjoern A. Zeeb *value = *u8data; 3890fce2dc1SBjoern A. Zeeb return (0); 3900fce2dc1SBjoern A. Zeeb } 3910fce2dc1SBjoern A. Zeeb 3920fce2dc1SBjoern A. Zeeb static int 3930fce2dc1SBjoern A. Zeeb debugfs_u8_set(void *data, uint64_t value) 3940fce2dc1SBjoern A. Zeeb { 3950fce2dc1SBjoern A. Zeeb uint8_t *u8data = data; 3960fce2dc1SBjoern A. Zeeb *u8data = (uint8_t)value; 3970fce2dc1SBjoern A. Zeeb return (0); 3980fce2dc1SBjoern A. Zeeb } 3990fce2dc1SBjoern A. Zeeb 4000fce2dc1SBjoern A. Zeeb DEFINE_DEBUGFS_ATTRIBUTE(fops_u8, debugfs_u8_get, debugfs_u8_set, "%u\n"); 4010fce2dc1SBjoern A. Zeeb DEFINE_DEBUGFS_ATTRIBUTE(fops_u8_ro, debugfs_u8_get, NULL, "%u\n"); 4020fce2dc1SBjoern A. Zeeb DEFINE_DEBUGFS_ATTRIBUTE(fops_u8_wo, NULL, debugfs_u8_set, "%u\n"); 4030fce2dc1SBjoern A. Zeeb 4040fce2dc1SBjoern A. Zeeb void 4050fce2dc1SBjoern A. Zeeb debugfs_create_u8(const char *name, umode_t mode, struct dentry *parent, uint8_t *value) 4060fce2dc1SBjoern A. Zeeb { 407976aa07aSJean-Sébastien Pédron 4080fce2dc1SBjoern A. Zeeb debugfs_create_mode_unsafe(name, mode, parent, value, &fops_u8, 4090fce2dc1SBjoern A. Zeeb &fops_u8_ro, &fops_u8_wo); 4100fce2dc1SBjoern A. Zeeb } 4110fce2dc1SBjoern A. Zeeb 412976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_x8, debugfs_u8_get, debugfs_u8_set, "0x%016llx\n"); 413976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_x8_ro, debugfs_u8_get, NULL, "0x%016llx\n"); 414976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_x8_wo, NULL, debugfs_u8_set, "0x%016llx\n"); 415976aa07aSJean-Sébastien Pédron 416976aa07aSJean-Sébastien Pédron void 417976aa07aSJean-Sébastien Pédron debugfs_create_x8(const char *name, umode_t mode, struct dentry *parent, uint8_t *value) 418976aa07aSJean-Sébastien Pédron { 419976aa07aSJean-Sébastien Pédron 420976aa07aSJean-Sébastien Pédron debugfs_create_mode_unsafe(name, mode, parent, value, &fops_x8, 421976aa07aSJean-Sébastien Pédron &fops_x8_ro, &fops_x8_wo); 422976aa07aSJean-Sébastien Pédron } 423976aa07aSJean-Sébastien Pédron 424976aa07aSJean-Sébastien Pédron 425976aa07aSJean-Sébastien Pédron static int 426976aa07aSJean-Sébastien Pédron debugfs_u16_get(void *data, uint64_t *value) 427976aa07aSJean-Sébastien Pédron { 428976aa07aSJean-Sébastien Pédron uint16_t *u16data = data; 429976aa07aSJean-Sébastien Pédron *value = *u16data; 430976aa07aSJean-Sébastien Pédron return (0); 431976aa07aSJean-Sébastien Pédron } 432976aa07aSJean-Sébastien Pédron 433976aa07aSJean-Sébastien Pédron static int 434976aa07aSJean-Sébastien Pédron debugfs_u16_set(void *data, uint64_t value) 435976aa07aSJean-Sébastien Pédron { 436976aa07aSJean-Sébastien Pédron uint16_t *u16data = data; 437976aa07aSJean-Sébastien Pédron *u16data = (uint16_t)value; 438976aa07aSJean-Sébastien Pédron return (0); 439976aa07aSJean-Sébastien Pédron } 440976aa07aSJean-Sébastien Pédron 441976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_u16, debugfs_u16_get, debugfs_u16_set, "%u\n"); 442976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_u16_ro, debugfs_u16_get, NULL, "%u\n"); 443976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_u16_wo, NULL, debugfs_u16_set, "%u\n"); 444976aa07aSJean-Sébastien Pédron 445976aa07aSJean-Sébastien Pédron void 446976aa07aSJean-Sébastien Pédron debugfs_create_u16(const char *name, umode_t mode, struct dentry *parent, uint16_t *value) 447976aa07aSJean-Sébastien Pédron { 448976aa07aSJean-Sébastien Pédron 449976aa07aSJean-Sébastien Pédron debugfs_create_mode_unsafe(name, mode, parent, value, &fops_u16, 450976aa07aSJean-Sébastien Pédron &fops_u16_ro, &fops_u16_wo); 451976aa07aSJean-Sébastien Pédron } 452976aa07aSJean-Sébastien Pédron 453976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_x16, debugfs_u16_get, debugfs_u16_set, "0x%016llx\n"); 454976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_x16_ro, debugfs_u16_get, NULL, "0x%016llx\n"); 455976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_x16_wo, NULL, debugfs_u16_set, "0x%016llx\n"); 456976aa07aSJean-Sébastien Pédron 457976aa07aSJean-Sébastien Pédron void 458976aa07aSJean-Sébastien Pédron debugfs_create_x16(const char *name, umode_t mode, struct dentry *parent, uint16_t *value) 459976aa07aSJean-Sébastien Pédron { 460976aa07aSJean-Sébastien Pédron 461976aa07aSJean-Sébastien Pédron debugfs_create_mode_unsafe(name, mode, parent, value, &fops_x16, 462976aa07aSJean-Sébastien Pédron &fops_x16_ro, &fops_x16_wo); 463976aa07aSJean-Sébastien Pédron } 464976aa07aSJean-Sébastien Pédron 465976aa07aSJean-Sébastien Pédron 466976aa07aSJean-Sébastien Pédron static int 467976aa07aSJean-Sébastien Pédron debugfs_u32_get(void *data, uint64_t *value) 468976aa07aSJean-Sébastien Pédron { 469976aa07aSJean-Sébastien Pédron uint32_t *u32data = data; 470976aa07aSJean-Sébastien Pédron *value = *u32data; 471976aa07aSJean-Sébastien Pédron return (0); 472976aa07aSJean-Sébastien Pédron } 473976aa07aSJean-Sébastien Pédron 474976aa07aSJean-Sébastien Pédron static int 475976aa07aSJean-Sébastien Pédron debugfs_u32_set(void *data, uint64_t value) 476976aa07aSJean-Sébastien Pédron { 477976aa07aSJean-Sébastien Pédron uint32_t *u32data = data; 478976aa07aSJean-Sébastien Pédron *u32data = (uint32_t)value; 479976aa07aSJean-Sébastien Pédron return (0); 480976aa07aSJean-Sébastien Pédron } 481976aa07aSJean-Sébastien Pédron 482976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_u32, debugfs_u32_get, debugfs_u32_set, "%u\n"); 483976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_u32_ro, debugfs_u32_get, NULL, "%u\n"); 484976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_u32_wo, NULL, debugfs_u32_set, "%u\n"); 485976aa07aSJean-Sébastien Pédron 486976aa07aSJean-Sébastien Pédron void 487976aa07aSJean-Sébastien Pédron debugfs_create_u32(const char *name, umode_t mode, struct dentry *parent, uint32_t *value) 488976aa07aSJean-Sébastien Pédron { 489976aa07aSJean-Sébastien Pédron 490976aa07aSJean-Sébastien Pédron debugfs_create_mode_unsafe(name, mode, parent, value, &fops_u32, 491976aa07aSJean-Sébastien Pédron &fops_u32_ro, &fops_u32_wo); 492976aa07aSJean-Sébastien Pédron } 493976aa07aSJean-Sébastien Pédron 494976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_x32, debugfs_u32_get, debugfs_u32_set, "0x%016llx\n"); 495976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_x32_ro, debugfs_u32_get, NULL, "0x%016llx\n"); 496976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_x32_wo, NULL, debugfs_u32_set, "0x%016llx\n"); 497976aa07aSJean-Sébastien Pédron 498976aa07aSJean-Sébastien Pédron void 499976aa07aSJean-Sébastien Pédron debugfs_create_x32(const char *name, umode_t mode, struct dentry *parent, uint32_t *value) 500976aa07aSJean-Sébastien Pédron { 501976aa07aSJean-Sébastien Pédron 502976aa07aSJean-Sébastien Pédron debugfs_create_mode_unsafe(name, mode, parent, value, &fops_x32, 503976aa07aSJean-Sébastien Pédron &fops_x32_ro, &fops_x32_wo); 504976aa07aSJean-Sébastien Pédron } 505976aa07aSJean-Sébastien Pédron 506976aa07aSJean-Sébastien Pédron 507976aa07aSJean-Sébastien Pédron static int 508976aa07aSJean-Sébastien Pédron debugfs_u64_get(void *data, uint64_t *value) 509976aa07aSJean-Sébastien Pédron { 510976aa07aSJean-Sébastien Pédron uint64_t *u64data = data; 511976aa07aSJean-Sébastien Pédron *value = *u64data; 512976aa07aSJean-Sébastien Pédron return (0); 513976aa07aSJean-Sébastien Pédron } 514976aa07aSJean-Sébastien Pédron 515976aa07aSJean-Sébastien Pédron static int 516976aa07aSJean-Sébastien Pédron debugfs_u64_set(void *data, uint64_t value) 517976aa07aSJean-Sébastien Pédron { 518976aa07aSJean-Sébastien Pédron uint64_t *u64data = data; 519976aa07aSJean-Sébastien Pédron *u64data = (uint64_t)value; 520976aa07aSJean-Sébastien Pédron return (0); 521976aa07aSJean-Sébastien Pédron } 522976aa07aSJean-Sébastien Pédron 523976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_u64, debugfs_u64_get, debugfs_u64_set, "%u\n"); 524976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_u64_ro, debugfs_u64_get, NULL, "%u\n"); 525976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_u64_wo, NULL, debugfs_u64_set, "%u\n"); 526976aa07aSJean-Sébastien Pédron 527976aa07aSJean-Sébastien Pédron void 528976aa07aSJean-Sébastien Pédron debugfs_create_u64(const char *name, umode_t mode, struct dentry *parent, uint64_t *value) 529976aa07aSJean-Sébastien Pédron { 530976aa07aSJean-Sébastien Pédron 531976aa07aSJean-Sébastien Pédron debugfs_create_mode_unsafe(name, mode, parent, value, &fops_u64, 532976aa07aSJean-Sébastien Pédron &fops_u64_ro, &fops_u64_wo); 533976aa07aSJean-Sébastien Pédron } 534976aa07aSJean-Sébastien Pédron 535976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_x64, debugfs_u64_get, debugfs_u64_set, "0x%016llx\n"); 536976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_x64_ro, debugfs_u64_get, NULL, "0x%016llx\n"); 537976aa07aSJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_x64_wo, NULL, debugfs_u64_set, "0x%016llx\n"); 538976aa07aSJean-Sébastien Pédron 539976aa07aSJean-Sébastien Pédron void 540976aa07aSJean-Sébastien Pédron debugfs_create_x64(const char *name, umode_t mode, struct dentry *parent, uint64_t *value) 541976aa07aSJean-Sébastien Pédron { 542976aa07aSJean-Sébastien Pédron 543976aa07aSJean-Sébastien Pédron debugfs_create_mode_unsafe(name, mode, parent, value, &fops_x64, 544976aa07aSJean-Sébastien Pédron &fops_x64_ro, &fops_x64_wo); 545976aa07aSJean-Sébastien Pédron } 546976aa07aSJean-Sébastien Pédron 5470fce2dc1SBjoern A. Zeeb 548f697b943SJake Freeland static int 549f697b943SJake Freeland debugfs_ulong_get(void *data, uint64_t *value) 550f697b943SJake Freeland { 551f697b943SJake Freeland uint64_t *uldata = data; 552f697b943SJake Freeland *value = *uldata; 553f697b943SJake Freeland return (0); 554f697b943SJake Freeland } 555f697b943SJake Freeland 556f697b943SJake Freeland static int 557f697b943SJake Freeland debugfs_ulong_set(void *data, uint64_t value) 558f697b943SJake Freeland { 559f697b943SJake Freeland uint64_t *uldata = data; 560f697b943SJake Freeland *uldata = value; 561f697b943SJake Freeland return (0); 562f697b943SJake Freeland } 563f697b943SJake Freeland 564f697b943SJake Freeland DEFINE_DEBUGFS_ATTRIBUTE(fops_ulong, debugfs_ulong_get, debugfs_ulong_set, "%llu\n"); 565f697b943SJake Freeland DEFINE_DEBUGFS_ATTRIBUTE(fops_ulong_ro, debugfs_ulong_get, NULL, "%llu\n"); 566f697b943SJake Freeland DEFINE_DEBUGFS_ATTRIBUTE(fops_ulong_wo, NULL, debugfs_ulong_set, "%llu\n"); 567f697b943SJake Freeland 568f697b943SJake Freeland void 569f697b943SJake Freeland debugfs_create_ulong(const char *name, umode_t mode, struct dentry *parent, unsigned long *value) 570f697b943SJake Freeland { 571976aa07aSJean-Sébastien Pédron 572f697b943SJake Freeland debugfs_create_mode_unsafe(name, mode, parent, value, &fops_ulong, 573f697b943SJake Freeland &fops_ulong_ro, &fops_ulong_wo); 574f697b943SJake Freeland } 575f697b943SJake Freeland 5760fce2dc1SBjoern A. Zeeb 577f2044a30SJean-Sébastien Pédron static int 578f2044a30SJean-Sébastien Pédron debugfs_atomic_t_get(void *data, uint64_t *value) 579f2044a30SJean-Sébastien Pédron { 580f2044a30SJean-Sébastien Pédron atomic_t *atomic_data = data; 581f2044a30SJean-Sébastien Pédron *value = atomic_read(atomic_data); 582f2044a30SJean-Sébastien Pédron return (0); 583f2044a30SJean-Sébastien Pédron } 584f2044a30SJean-Sébastien Pédron 585f2044a30SJean-Sébastien Pédron static int 586f2044a30SJean-Sébastien Pédron debugfs_atomic_t_set(void *data, uint64_t value) 587f2044a30SJean-Sébastien Pédron { 588f2044a30SJean-Sébastien Pédron atomic_t *atomic_data = data; 589f2044a30SJean-Sébastien Pédron atomic_set(atomic_data, (int)value); 590f2044a30SJean-Sébastien Pédron return (0); 591f2044a30SJean-Sébastien Pédron } 592f2044a30SJean-Sébastien Pédron 593f2044a30SJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_atomic_t, debugfs_atomic_t_get, debugfs_atomic_t_set, "%d\n"); 594f2044a30SJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_atomic_t_ro, debugfs_atomic_t_get, NULL, "%d\n"); 595f2044a30SJean-Sébastien Pédron DEFINE_DEBUGFS_ATTRIBUTE(fops_atomic_t_wo, NULL, debugfs_atomic_t_set, "%d\n"); 596f2044a30SJean-Sébastien Pédron 597f2044a30SJean-Sébastien Pédron void 598f2044a30SJean-Sébastien Pédron debugfs_create_atomic_t(const char *name, umode_t mode, struct dentry *parent, atomic_t *value) 599f2044a30SJean-Sébastien Pédron { 600f2044a30SJean-Sébastien Pédron 601f2044a30SJean-Sébastien Pédron debugfs_create_mode_unsafe(name, mode, parent, value, &fops_atomic_t, 602f2044a30SJean-Sébastien Pédron &fops_atomic_t_ro, &fops_atomic_t_wo); 603f2044a30SJean-Sébastien Pédron } 604f2044a30SJean-Sébastien Pédron 605f2044a30SJean-Sébastien Pédron 6060fce2dc1SBjoern A. Zeeb static ssize_t 6070fce2dc1SBjoern A. Zeeb fops_blob_read(struct file *filp, char __user *ubuf, size_t read_size, loff_t *ppos) 6080fce2dc1SBjoern A. Zeeb { 6090fce2dc1SBjoern A. Zeeb struct debugfs_blob_wrapper *blob; 6100fce2dc1SBjoern A. Zeeb 6110fce2dc1SBjoern A. Zeeb blob = filp->private_data; 6120fce2dc1SBjoern A. Zeeb if (blob == NULL) 6130fce2dc1SBjoern A. Zeeb return (-EINVAL); 6140fce2dc1SBjoern A. Zeeb if (blob->size == 0 || blob->data == NULL) 6150fce2dc1SBjoern A. Zeeb return (-EINVAL); 6160fce2dc1SBjoern A. Zeeb 6170fce2dc1SBjoern A. Zeeb return (simple_read_from_buffer(ubuf, read_size, ppos, blob->data, blob->size)); 6180fce2dc1SBjoern A. Zeeb } 6190fce2dc1SBjoern A. Zeeb 6200fce2dc1SBjoern A. Zeeb static int 6210fce2dc1SBjoern A. Zeeb fops_blob_open(struct inode *inode, struct file *filp) 6220fce2dc1SBjoern A. Zeeb { 623976aa07aSJean-Sébastien Pédron 6240fce2dc1SBjoern A. Zeeb return (simple_open(inode, filp)); 6250fce2dc1SBjoern A. Zeeb } 6260fce2dc1SBjoern A. Zeeb 6270fce2dc1SBjoern A. Zeeb static const struct file_operations __fops_blob_ro = { 6280fce2dc1SBjoern A. Zeeb .owner = THIS_MODULE, 6290fce2dc1SBjoern A. Zeeb .open = fops_blob_open, 6300fce2dc1SBjoern A. Zeeb .read = fops_blob_read, 6310fce2dc1SBjoern A. Zeeb .llseek = no_llseek 6320fce2dc1SBjoern A. Zeeb }; 6330fce2dc1SBjoern A. Zeeb 6340fce2dc1SBjoern A. Zeeb struct dentry * 6350fce2dc1SBjoern A. Zeeb debugfs_create_blob(const char *name, umode_t mode, struct dentry *parent, 6360fce2dc1SBjoern A. Zeeb struct debugfs_blob_wrapper *value) 6370fce2dc1SBjoern A. Zeeb { 6380fce2dc1SBjoern A. Zeeb /* Blobs are read-only. */ 6390fce2dc1SBjoern A. Zeeb return (debugfs_create_file(name, mode & 0444, parent, value, &__fops_blob_ro)); 6400fce2dc1SBjoern A. Zeeb } 6410fce2dc1SBjoern A. Zeeb 6420fce2dc1SBjoern A. Zeeb 643f697b943SJake Freeland static int 644f697b943SJake Freeland lindebugfs_init(PFS_INIT_ARGS) 6453f6cab07SMatt Macy { 6463f6cab07SMatt Macy 6473f6cab07SMatt Macy debugfs_root = pi->pi_root; 64846888dedSMark Johnston 64946888dedSMark Johnston (void)debugfs_create_symlink("kcov", NULL, "/dev/kcov"); 65046888dedSMark Johnston 6513f6cab07SMatt Macy return (0); 6523f6cab07SMatt Macy } 6533f6cab07SMatt Macy 6543f6cab07SMatt Macy static int 655f697b943SJake Freeland lindebugfs_uninit(PFS_INIT_ARGS) 6563f6cab07SMatt Macy { 657976aa07aSJean-Sébastien Pédron 6583f6cab07SMatt Macy return (0); 6593f6cab07SMatt Macy } 6603f6cab07SMatt Macy 661f697b943SJake Freeland PSEUDOFS(lindebugfs, 1, VFCF_JAIL); 66203f1cf9fSJohannes Lundberg MODULE_DEPEND(lindebugfs, linuxkpi, 1, 1, 1); 663