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kdump: Improve decoding of various *at calls:

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* Write AT_FDCWD where appropriate.
* Decode the remaining arguments of openat() etc like open() etc.
This commit is contained in:
Jilles Tjoelker 2013-08-13 19:57:35 +00:00
parent 89521d4108
commit 8447b7cddc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=254291
2 changed files with 47 additions and 0 deletions
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35
usr.bin/kdump/kdump.c
View File

@ -605,6 +605,27 @@ ktrsyscall(struct ktr_syscall *ktr, u_int flags)
char c = '(';
if (fancy &&
(flags == 0 || (flags & SV_ABI_MASK) == SV_ABI_FREEBSD)) {
switch (ktr->ktr_code) {
case SYS_faccessat:
case SYS_fchmodat:
case SYS_fchownat:
case SYS_fstatat:
case SYS_futimesat:
case SYS_linkat:
case SYS_mkdirat:
case SYS_mkfifoat:
case SYS_mknodat:
case SYS_openat:
case SYS_readlinkat:
case SYS_renameat:
case SYS_unlinkat:
putchar('(');
atfdname(*ip, decimal);
c = ',';
ip++;
narg--;
break;
}
switch (ktr->ktr_code) {
case SYS_ioctl: {
print_number(ip, narg, c);
@ -624,6 +645,7 @@ ktrsyscall(struct ktr_syscall *ktr, u_int flags)
break;
case SYS_access:
case SYS_eaccess:
case SYS_faccessat:
print_number(ip, narg, c);
putchar(',');
accessmodename(*ip);
@ -631,6 +653,7 @@ ktrsyscall(struct ktr_syscall *ktr, u_int flags)
narg--;
break;
case SYS_open:
case SYS_openat:
print_number(ip, narg, c);
putchar(',');
flagsandmodename(ip[0], ip[1], decimal);
@ -655,6 +678,7 @@ ktrsyscall(struct ktr_syscall *ktr, u_int flags)
narg--;
break;
case SYS_mknod:
case SYS_mknodat:
print_number(ip, narg, c);
putchar(',');
modename(*ip);
@ -860,7 +884,9 @@ ktrsyscall(struct ktr_syscall *ktr, u_int flags)
narg--;
break;
case SYS_mkfifo:
case SYS_mkfifoat:
case SYS_mkdir:
case SYS_mkdirat:
print_number(ip, narg, c);
putchar(',');
modename(*ip);
@ -1083,6 +1109,15 @@ ktrsyscall(struct ktr_syscall *ktr, u_int flags)
ip++;
narg--;
break;
case SYS_linkat:
case SYS_renameat:
case SYS_symlinkat:
print_number(ip, narg, c);
putchar(',');
atfdname(*ip, decimal);
ip++;
narg--;
break;
case SYS_cap_new:
case SYS_cap_rights_limit:
print_number(ip, narg, c);

12
usr.bin/kdump/mksubr
View File

@ -208,6 +208,18 @@ cat <<_EOF_
print_or(#flag,orflag); } \\
while (0)
/* MANUAL */
void
atfdname(int fd, int decimal)
{
if (fd == AT_FDCWD)
printf("AT_FDCWD");
else if (decimal)
printf("%d", fd);
else
printf("%#x", fd);
}
/* MANUAL */
extern char *signames[]; /* from kdump.c */
void