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Decode the arguments passed to __cap_rights_get() and cap_rights_limit().

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Submitted by:	tobik
This commit is contained in:
John Baldwin 2017-06-02 13:33:50 +00:00
parent c74415ed3b
commit 7136a1d97a
2 changed files with 19 additions and 1 deletions
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3
usr.bin/truss/syscall.h
View File

@ -28,6 +28,7 @@
* Kevent -- a pointer to an array of struct kevents. Prints all elements.
* Pathconf -- the 2nd argument of pathconf().
* Utrace -- utrace(2) buffer.
* CapRights -- a pointer to a cap_rights_t. Prints all set capabilities.
*
* In addition, the pointer types (String, Ptr) may have OUT masked in --
* this means that the data is set on *return* from the system call -- or
@ -47,7 +48,7 @@ enum Argtype { None = 1, Hex, Octal, Int, UInt, LongHex, Name, Ptr, Stat, Ioctl,
Sysarch, ExecArgs, ExecEnv, PipeFds, QuadHex, Utrace, IntArray, Pipe2,
CapFcntlRights, Fadvice, FileFlags, Flockop, Getfsstatmode, Kldsymcmd,
Kldunloadflags, Sizet, Madvice, Socklent, Sockprotocol, Sockoptlevel,
Sockoptname, Msgflags,
Sockoptname, Msgflags, CapRights,
CloudABIAdvice, CloudABIClockID, ClouduABIFDSFlags,
CloudABIFDStat, CloudABIFileStat, CloudABIFileType,

17
usr.bin/truss/syscalls.c
View File

@ -37,6 +37,7 @@ __FBSDID("$FreeBSD$");
* arguments.
*/
#include <sys/capsicum.h>
#include <sys/types.h>
#include <sys/event.h>
#include <sys/ioccom.h>
@ -76,6 +77,8 @@ __FBSDID("$FreeBSD$");
*/
static struct syscall decoded_syscalls[] = {
/* Native ABI */
{ .name = "__cap_rights_get", .ret_type = 1, .nargs = 3,
.args = { { Int, 0 }, { Int, 1 }, { CapRights | OUT, 2 } } },
{ .name = "__getcwd", .ret_type = 1, .nargs = 2,
.args = { { Name | OUT, 0 }, { Int, 1 } } },
{ .name = "_umtx_op", .ret_type = 1, .nargs = 5,
@ -96,6 +99,8 @@ static struct syscall decoded_syscalls[] = {
.args = { { Int, 0 }, { CapFcntlRights | OUT, 1 } } },
{ .name = "cap_fcntls_limit", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { CapFcntlRights, 1 } } },
{ .name = "cap_rights_limit", .ret_type = 1, .nargs = 2,
.args = { { Int, 0 }, { CapRights, 1 } } },
{ .name = "chdir", .ret_type = 1, .nargs = 1,
.args = { { Name, 0 } } },
{ .name = "chflags", .ret_type = 1, .nargs = 2,
@ -1976,6 +1981,18 @@ print_arg(struct syscall_args *sc, unsigned long *args, long *retval,
case Msgflags:
print_mask_arg(sysdecode_msg_flags, fp, args[sc->offset]);
break;
case CapRights: {
cap_rights_t rights;
if (get_struct(pid, (void *)args[sc->offset], &rights,
sizeof(rights)) != -1) {
fputs("{ ", fp);
sysdecode_cap_rights(fp, &rights);
fputs(" }", fp);
} else
fprintf(fp, "0x%lx", args[sc->offset]);
break;
}
case CloudABIAdvice:
fputs(xlookup(cloudabi_advice, args[sc->offset]), fp);