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kdump: Decode Linux *at() syscalls

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MFC after:		2 weeks
This commit is contained in:
Dmitry Chagin 2022-06-22 14:29:38 +03:00
parent d416ee86c7
commit 4d496ab44a
1 changed files with 232 additions and 3 deletions
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235
usr.bin/kdump/linux.c
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@ -41,15 +41,16 @@ __FBSDID("$FreeBSD$");
#include "kdump.h"
#ifdef __amd64__
#include <amd64/linux/linux_syscall.h>
#include <amd64/linux/linux.h>
#include <amd64/linux32/linux32_syscall.h>
#elif __aarch64__
#include <arm64/linux/linux_syscall.h>
#include <arm64/linux/linux.h>
#elif __i386__
#include <i386/linux/linux_syscall.h>
#include <i386/linux/linux.h>
#endif
#include <compat/linux/linux.h>
#include <compat/linux/linux_file.h>
static void
print_linux_signal(int signo)
@ -77,6 +78,99 @@ ktrsyscall_linux(struct ktr_syscall *ktr, register_t **resip,
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:
@ -116,6 +210,20 @@ ktrsyscall_linux(struct ktr_syscall *ktr, register_t **resip,
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);
@ -147,6 +255,25 @@ ktrsyscall_linux(struct ktr_syscall *ktr, register_t **resip,
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;
@ -167,6 +294,82 @@ ktrsyscall_linux32(struct ktr_syscall *ktr, register_t **resip,
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:
@ -209,6 +412,18 @@ ktrsyscall_linux32(struct ktr_syscall *ktr, register_t **resip,
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:
@ -240,6 +455,20 @@ ktrsyscall_linux32(struct ktr_syscall *ktr, register_t **resip,
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;