diff options
Diffstat (limited to 'usr.bin/kdump/linux.c')
| -rw-r--r-- | usr.bin/kdump/linux.c | 525 |
1 files changed, 525 insertions, 0 deletions
diff --git a/usr.bin/kdump/linux.c b/usr.bin/kdump/linux.c new file mode 100644 index 000000000000..a52fbb2ba498 --- /dev/null +++ b/usr.bin/kdump/linux.c @@ -0,0 +1,525 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2022 Dmitry Chagin <dchagin@FreeBSD.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/param.h> +#include <sys/uio.h> +#include <sys/ktrace.h> +#include <err.h> +#include <errno.h> +#include <stddef.h> +#include <stdlib.h> +#include <string.h> +#include <sysdecode.h> + +#include "kdump.h" + +#ifdef __amd64__ +#include <amd64/linux/linux.h> +#include <amd64/linux32/linux32_syscall.h> +#elif __aarch64__ +#include <arm64/linux/linux.h> +#elif __i386__ +#include <i386/linux/linux.h> +#endif + +#include <compat/linux/linux.h> +#include <compat/linux/linux_file.h> + +static void +print_linux_signal(int signo) +{ + const char *signame; + + signame = sysdecode_linux_signal(signo); + if (signame != NULL) + printf("%s", signame); + else + printf("SIG %d", signo); +} + +void +ktrsyscall_linux(struct ktr_syscall *ktr, register_t **resip, + int *resnarg, char *resc) +{ + int narg = ktr->ktr_narg; + register_t *ip, *first; + int quad_align, quad_slots; + char c; + + ip = first = &ktr->ktr_args[0]; + c = *resc; + quad_align = 0; + quad_slots = 1; + switch (ktr->ktr_code) { + case LINUX_SYS_linux_faccessat: + case LINUX_SYS_linux_fchmodat: + case LINUX_SYS_linux_fchownat: +#ifdef LINUX_SYS_linux_newfstatat + case LINUX_SYS_linux_newfstatat: +#endif +#ifdef LINUX_SYS_linux_fstatat64 + case LINUX_SYS_linux_fstatat64: +#endif +#ifdef LINUX_SYS_linux_futimesat + case LINUX_SYS_linux_futimesat: +#endif + case LINUX_SYS_linux_linkat: + case LINUX_SYS_linux_mkdirat: + case LINUX_SYS_linux_mknodat: + case LINUX_SYS_linux_openat: + case LINUX_SYS_linux_readlinkat: + case LINUX_SYS_linux_renameat: + case LINUX_SYS_linux_unlinkat: + case LINUX_SYS_linux_utimensat: + putchar('('); + print_integer_arg_valid(sysdecode_atfd, *ip); + c = ','; + ip++; + narg--; + break; + } + switch (ktr->ktr_code) { +#ifdef LINUX_SYS_linux_access + case LINUX_SYS_linux_access: +#endif + case LINUX_SYS_linux_faccessat: + print_number(ip, narg, c); + putchar(','); + print_mask_arg(sysdecode_access_mode, *ip); + ip++; + narg--; + break; +#ifdef LINUX_SYS_linux_chmod + case LINUX_SYS_linux_chmod: +#endif + case LINUX_SYS_linux_fchmodat: + print_number(ip, narg, c); + putchar(','); + decode_filemode(*ip); + ip++; + narg--; + break; + case LINUX_SYS_linux_mknodat: + print_number(ip, narg, c); + putchar(','); + decode_filemode(*ip); + ip++; + narg--; + break; +#ifdef LINUX_SYS_linux_mkdir + case LINUX_SYS_linux_mkdir: +#endif + case LINUX_SYS_linux_mkdirat: + print_number(ip, narg, c); + putchar(','); + decode_filemode(*ip); + ip++; + narg--; + break; + case LINUX_SYS_linux_linkat: + case LINUX_SYS_linux_renameat: + case LINUX_SYS_linux_symlinkat: + print_number(ip, narg, c); + putchar(','); + print_integer_arg_valid(sysdecode_atfd, *ip); + ip++; + narg--; + print_number(ip, narg, c); + break; + case LINUX_SYS_linux_fchownat: + print_number(ip, narg, c); + print_number(ip, narg, c); + print_number(ip, narg, c); + break; +#ifdef LINUX_SYS_linux_newfstatat + case LINUX_SYS_linux_newfstatat: +#endif +#ifdef LINUX_SYS_linux_fstatat64 + case LINUX_SYS_linux_fstatat64: +#endif + case LINUX_SYS_linux_utimensat: + print_number(ip, narg, c); + print_number(ip, narg, c); + break; + case LINUX_SYS_linux_unlinkat: + print_number(ip, narg, c); + break; + case LINUX_SYS_linux_clock_gettime: + case LINUX_SYS_linux_clock_settime: + case LINUX_SYS_linux_clock_getres: + case LINUX_SYS_linux_timer_create: + putchar('('); + sysdecode_linux_clockid(stdout, *ip); + c = ','; + ip++; + narg--; + break; + case LINUX_SYS_linux_clock_nanosleep: + putchar('('); + sysdecode_linux_clockid(stdout, *ip); + putchar(','); + ip++; + narg--; + print_mask_arg0(sysdecode_linux_clock_flags, *ip); + c = ','; + ip++; + narg--; + break; + case LINUX_SYS_linux_clone: + putchar('('); + print_mask_arg(sysdecode_linux_clone_flags, *ip); + ip++; + narg--; + c = ','; + break; + case LINUX_SYS_linux_kill: + case LINUX_SYS_linux_tkill: + case LINUX_SYS_linux_rt_sigqueueinfo: + print_decimal_number(ip, narg, c); + putchar(','); + print_linux_signal(*ip); + ip++; + narg--; + break; + case LINUX_SYS_linux_tgkill: + case LINUX_SYS_linux_rt_tgsigqueueinfo: + print_decimal_number(ip, narg, c); + print_decimal_number(ip, narg, c); + putchar(','); + print_linux_signal(*ip); + ip++; + narg--; + break; +#ifdef LINUX_SYS_linux_open + case LINUX_SYS_linux_open: +#endif + case LINUX_SYS_linux_openat: + print_number(ip, narg, c); + putchar(','); + print_mask_arg(sysdecode_linux_open_flags, ip[0]); + if ((ip[0] & LINUX_O_CREAT) == LINUX_O_CREAT) { + putchar(','); + decode_filemode(ip[1]); + } + ip += 2; + narg -= 2; + break; + case LINUX_SYS_linux_rt_sigaction: + putchar('('); + print_linux_signal(*ip); + ip++; + narg--; + c = ','; + break; + case LINUX_SYS_linux_ftruncate: + case LINUX_SYS_linux_truncate: + print_number(ip, narg, c); + print_number64(first, ip, narg, c); + break; + case LINUX_SYS_linux_getitimer: + case LINUX_SYS_linux_setitimer: + putchar('('); + print_integer_arg(sysdecode_itimer, *ip); + ip++; + narg--; + c = ','; + break; + case LINUX_SYS_linux_rt_sigprocmask: +#ifdef LINUX_SYS_linux_sigprocmask + case LINUX_SYS_linux_sigprocmask: +#endif + putchar('('); + print_integer_arg(sysdecode_linux_sigprocmask_how, *ip); + ip++; + narg--; + c = ','; + break; + } + switch (ktr->ktr_code) { + case LINUX_SYS_linux_fchownat: + case LINUX_SYS_linux_faccessat: + case LINUX_SYS_linux_fchmodat: +#ifdef LINUX_SYS_linux_newfstatat + case LINUX_SYS_linux_newfstatat: +#endif +#ifdef LINUX_SYS_linux_fstatat64 + case LINUX_SYS_linux_fstatat64: +#endif + case LINUX_SYS_linux_linkat: + case LINUX_SYS_linux_unlinkat: + case LINUX_SYS_linux_utimensat: + putchar(','); + print_mask_arg0(sysdecode_linux_atflags, *ip); + ip++; + narg--; + break; + } + *resc = c; + *resip = ip; + *resnarg = narg; +} + +#if defined(__amd64__) +void +ktrsyscall_linux32(struct ktr_syscall *ktr, register_t **resip, + int *resnarg, char *resc) +{ + int narg = ktr->ktr_narg; + register_t *ip, *first; + int quad_align, quad_slots; + char c; + + ip = first = &ktr->ktr_args[0]; + c = *resc; + quad_align = 0; + quad_slots = 2; + switch (ktr->ktr_code) { + case LINUX32_SYS_linux_faccessat: + case LINUX32_SYS_linux_fchmodat: + case LINUX32_SYS_linux_fchownat: + case LINUX32_SYS_linux_fstatat64: + case LINUX32_SYS_linux_futimesat: + case LINUX32_SYS_linux_linkat: + case LINUX32_SYS_linux_mkdirat: + case LINUX32_SYS_linux_mknodat: + case LINUX32_SYS_linux_openat: + case LINUX32_SYS_linux_readlinkat: + case LINUX32_SYS_linux_renameat: + case LINUX32_SYS_linux_unlinkat: + case LINUX32_SYS_linux_utimensat: + putchar('('); + print_integer_arg_valid(sysdecode_atfd, *ip); + c = ','; + ip++; + narg--; + break; + } + switch (ktr->ktr_code) { + case LINUX32_SYS_linux_access: + case LINUX32_SYS_linux_faccessat: + print_number(ip, narg, c); + putchar(','); + print_mask_arg(sysdecode_access_mode, *ip); + ip++; + narg--; + break; + case LINUX32_SYS_linux_chmod: + case LINUX32_SYS_fchmod: + case LINUX32_SYS_linux_fchmodat: + print_number(ip, narg, c); + putchar(','); + decode_filemode(*ip); + ip++; + narg--; + break; + case LINUX32_SYS_linux_mknodat: + print_number(ip, narg, c); + putchar(','); + decode_filemode(*ip); + ip++; + narg--; + break; + case LINUX32_SYS_linux_mkdir: + case LINUX32_SYS_linux_mkdirat: + print_number(ip, narg, c); + putchar(','); + decode_filemode(*ip); + ip++; + narg--; + break; + case LINUX32_SYS_linux_linkat: + case LINUX32_SYS_linux_renameat: + case LINUX32_SYS_linux_symlinkat: + print_number(ip, narg, c); + putchar(','); + print_integer_arg_valid(sysdecode_atfd, *ip); + ip++; + narg--; + print_number(ip, narg, c); + break; + case LINUX32_SYS_linux_fchownat: + print_number(ip, narg, c); + print_number(ip, narg, c); + print_number(ip, narg, c); + break; + case LINUX32_SYS_linux_fstatat64: + case LINUX32_SYS_linux_utimensat: + print_number(ip, narg, c); + print_number(ip, narg, c); + break; + case LINUX32_SYS_linux_unlinkat: + print_number(ip, narg, c); + break; + case LINUX32_SYS_linux_clock_gettime: + case LINUX32_SYS_linux_clock_settime: + case LINUX32_SYS_linux_clock_getres: + case LINUX32_SYS_linux_timer_create: + case LINUX32_SYS_linux_clock_gettime64: + case LINUX32_SYS_linux_clock_settime64: + case LINUX32_SYS_linux_clock_getres_time64: + putchar('('); + sysdecode_linux_clockid(stdout, *ip); + c = ','; + ip++; + narg--; + break; + case LINUX32_SYS_linux_clock_nanosleep: + putchar('('); + sysdecode_linux_clockid(stdout, *ip); + putchar(','); + ip++; + narg--; + print_mask_arg0(sysdecode_linux_clock_flags, *ip); + c = ','; + ip++; + narg--; + break; + case LINUX32_SYS_linux_clone: + putchar('('); + print_mask_arg(sysdecode_linux_clone_flags, *ip); + ip++; + narg--; + c = ','; + break; + case LINUX32_SYS_linux_kill: + case LINUX32_SYS_linux_tkill: + case LINUX32_SYS_linux_rt_sigqueueinfo: + print_decimal_number(ip, narg, c); + putchar(','); + print_linux_signal(*ip); + ip++; + narg--; + break; + case LINUX32_SYS_linux_tgkill: + case LINUX32_SYS_linux_rt_tgsigqueueinfo: + print_decimal_number(ip, narg, c); + print_decimal_number(ip, narg, c); + putchar(','); + print_linux_signal(*ip); + ip++; + narg--; + break; + case LINUX32_SYS_linux_open: + case LINUX32_SYS_linux_openat: + print_number(ip, narg, c); + putchar(','); + print_mask_arg(sysdecode_linux_open_flags, ip[0]); + if ((ip[0] & LINUX_O_CREAT) == LINUX_O_CREAT) { + putchar(','); + decode_filemode(ip[1]); + } + ip += 2; + narg -= 2; + break; + case LINUX32_SYS_linux_signal: + case LINUX32_SYS_linux_sigaction: + case LINUX32_SYS_linux_rt_sigaction: + putchar('('); + print_linux_signal(*ip); + ip++; + narg--; + c = ','; + break; + case LINUX32_SYS_linux_ftruncate: + case LINUX32_SYS_linux_truncate: + print_number(ip, narg, c); + print_number64(first, ip, narg, c); + break; + case LINUX32_SYS_linux_getitimer: + case LINUX32_SYS_linux_setitimer: + putchar('('); + print_integer_arg(sysdecode_itimer, *ip); + ip++; + narg--; + c = ','; + break; + case LINUX32_SYS_linux_rt_sigprocmask: + case LINUX32_SYS_linux_sigprocmask: + putchar('('); + print_integer_arg(sysdecode_linux_sigprocmask_how, *ip); + ip++; + narg--; + c = ','; + break; + } + switch (ktr->ktr_code) { + case LINUX32_SYS_linux_fchownat: + case LINUX32_SYS_linux_faccessat: + case LINUX32_SYS_linux_fchmodat: + case LINUX32_SYS_linux_fstatat64: + case LINUX32_SYS_linux_linkat: + case LINUX32_SYS_linux_unlinkat: + case LINUX32_SYS_linux_utimensat: + putchar(','); + print_mask_arg0(sysdecode_linux_atflags, *ip); + ip++; + narg--; + break; + } + *resc = c; + *resip = ip; + *resnarg = narg; +} +#endif /* __amd64__ */ + +static void +ktrsigset(const char *name, const l_sigset_t *mask, size_t sz) +{ + unsigned long i, c; + + printf("%s [ ", name); + c = 0; + for (i = 1; i <= sz * CHAR_BIT; i++) { + if (!LINUX_SIGISMEMBER(*mask, i)) + continue; + if (c != 0) + printf(", "); + printf("%s", sysdecode_linux_signal(i)); + c++; + } + if (c == 0) + printf("empty ]\n"); + else + printf(" ]\n"); +} + +bool +ktrstruct_linux(const char *name, const char *data, size_t datalen) +{ + l_sigset_t mask; + + if (strcmp(name, "l_sigset_t") == 0) { + /* Old Linux sigset_t is one word size. */ + if (datalen < sizeof(int) || datalen > sizeof(l_sigset_t)) + return (false); + memcpy(&mask, data, datalen); + ktrsigset(name, &mask, datalen); + } else + return (false); + + return (true); +} |