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Decode FreeBSD 11 compat stat, fstat and lstat calls.

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This commit is contained in:
Warner Losh 2017-06-23 18:06:46 +00:00
parent 5ab191c42b
commit 8207f12d6a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=320279
2 changed files with 28 additions and 1 deletions
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3
usr.bin/truss/syscall.h
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@ -10,6 +10,7 @@
* BinString -- pointer to an array of chars, printed via strvisx().
* Ptr -- pointer to some unspecified structure. Just print as hex for now.
* Stat -- a pointer to a stat buffer. Prints a couple fields.
* Stat11 -- a pointer to a freebsd 11 stat buffer. Prints a couple fields.
* StatFs -- a pointer to a statfs buffer. Prints a few fields.
* Ioctl -- an ioctl command. Woefully limited.
* Quad -- a double-word value. e.g., lseek(int, offset_t, int)
@ -38,7 +39,7 @@
* $FreeBSD$
*/
enum Argtype { None = 1, Hex, Octal, Int, UInt, LongHex, Name, Ptr, Stat, Ioctl,
enum Argtype { None = 1, Hex, Octal, Int, UInt, LongHex, Name, Ptr, Stat, Stat11, Ioctl,
Quad, Signal, Sockaddr, StringArray, Timespec, Timeval, Itimerval,
Pollfd, Fd_set, Sigaction, Fcntl, Mprot, Mmapflags, Whence, Readlinkres,
Sigset, Sigprocmask, StatFs, Kevent, Sockdomain, Socktype, Open,

26
usr.bin/truss/syscalls.c
View File

@ -45,6 +45,7 @@ __FBSDID("$FreeBSD$");
#include <sys/ptrace.h>
#include <sys/resource.h>
#include <sys/socket.h>
#define _WANT_FREEBSD11_STAT
#include <sys/stat.h>
#include <sys/un.h>
#include <sys/wait.h>
@ -215,6 +216,14 @@ static struct syscall decoded_syscalls[] = {
.args = { { Int, 0 }, { Fcntl, 1 }, { Fcntlflag, 2 } } },
{ .name = "flock", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Flockop, 1 } } },
{ .name = "compat11.fstat", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Stat11 | OUT, 1 } } },
{ .name = "compat11.lstat", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Stat11 | OUT, 1 } } },
{ .name = "compat11.stat", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Stat11 | OUT, 1 } } },
{ .name = "compat11.stat", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Stat11 | OUT, 1 } } },
{ .name = "fstat", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { Stat | OUT, 1 } } },
{ .name = "fstatat", .ret_type = 1, .nargs = 4,
@ -1885,6 +1894,23 @@ print_arg(struct syscall_args *sc, unsigned long *args, long *retval,
}
break;
}
case Stat11: {
struct freebsd11_stat st;
if (get_struct(pid, (void *)args[sc->offset], &st, sizeof(st))
!= -1) {
char mode[12];
strmode(st.st_mode, mode);
fprintf(fp,
"{ mode=%s,inode=%ju,size=%jd,blksize=%ld }", mode,
(uintmax_t)st.st_ino, (intmax_t)st.st_size,
(long)st.st_blksize);
} else {
fprintf(fp, "0x%lx", args[sc->offset]);
}
break;
}
case StatFs: {
unsigned int i;
struct statfs buf;