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Code Issues Releases Activity

The id_t type used to pass IDs to wait6(2) and procctl(6) is a 64-bit

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integer.  Fix the argument decoding to treat this as a quad instead of an
int.  This includes using QUAD_ALIGN and QUAD_SLOTS as necessary.  To
continue printing IDs in decimal, add a new QuadHex argument type that
prints a 64-bit integer in hex, use QuadHex for the existing off_t arguments,
repurpose Quad to print a 64-bit integer in decimal, and use Quad for id_t
arguments.

This fixes the decoding of wait6(2) and procctl(2) on 32-bit platforms.
This commit is contained in:
John Baldwin 2015-10-01 17:50:41 +00:00
parent df438f423d
commit 72df19e7ab
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=288455
2 changed files with 22 additions and 10 deletions
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2
usr.bin/truss/syscall.h
View File

@ -42,7 +42,7 @@ enum Argtype { None = 1, Hex, Octal, Int, LongHex, Name, Ptr, Stat, Ioctl, Quad,
Fcntlflag, Rusage, BinString, Shutdown, Resource, Rlimit, Timeval2,
Pathconf, Rforkflags, ExitStatus, Waitoptions, Idtype, Procctl,
LinuxSockArgs, Umtxop, Atfd, Atflags, Timespec2, Accessmode, Long,
Sysarch, ExecArgs, ExecEnv, PipeFds };
Sysarch, ExecArgs, ExecEnv, PipeFds, QuadHex };
#define ARG_MASK 0xff
#define OUT 0x100

30
usr.bin/truss/syscalls.c
View File

@ -106,13 +106,13 @@ static struct syscall syscalls[] = {
.args = { { Atfd, 0 }, { Name, 1 }, { Readlinkres | OUT, 2 },
{ Int, 3 } } },
{ .name = "lseek", .ret_type = 2, .nargs = 3,
.args = { { Int, 0 }, { Quad, 1 + QUAD_ALIGN },
.args = { { Int, 0 }, { QuadHex, 1 + QUAD_ALIGN },
{ Whence, 1 + QUAD_SLOTS + QUAD_ALIGN } } },
{ .name = "linux_lseek", .ret_type = 2, .nargs = 3,
.args = { { Int, 0 }, { Int, 1 }, { Whence, 2 } } },
{ .name = "mmap", .ret_type = 1, .nargs = 6,
.args = { { Ptr, 0 }, { Int, 1 }, { Mprot, 2 }, { Mmapflags, 3 },
{ Int, 4 }, { Quad, 5 + QUAD_ALIGN } } },
{ Int, 4 }, { QuadHex, 5 + QUAD_ALIGN } } },
{ .name = "linux_mkdir", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Int, 1 } } },
{ .name = "mprotect", .ret_type = 1, .nargs = 3,
@ -321,9 +321,9 @@ static struct syscall syscalls[] = {
{ .name = "pipe2", .ret_type = 1, .nargs = 2,
.args = { { Ptr, 0 }, { Open, 1 } } },
{ .name = "truncate", .ret_type = 1, .nargs = 2,
.args = { { Name | IN, 0 }, { Quad | IN, 1 + QUAD_ALIGN } } },
.args = { { Name | IN, 0 }, { QuadHex | IN, 1 + QUAD_ALIGN } } },
{ .name = "ftruncate", .ret_type = 1, .nargs = 2,
.args = { { Int | IN, 0 }, { Quad | IN, 1 + QUAD_ALIGN } } },
.args = { { Int | IN, 0 }, { QuadHex | IN, 1 + QUAD_ALIGN } } },
{ .name = "kill", .ret_type = 1, .nargs = 2,
.args = { { Int | IN, 0 }, { Signal | IN, 1 } } },
{ .name = "munmap", .ret_type = 1, .nargs = 2,
@ -344,10 +344,15 @@ static struct syscall syscalls[] = {
.args = { { Int, 0 }, { ExitStatus | OUT, 1 }, { Waitoptions, 2 },
{ Rusage | OUT, 3 } } },
{ .name = "wait6", .ret_type = 1, .nargs = 6,
.args = { { Idtype, 0 }, { Int, 1 }, { ExitStatus | OUT, 2 },
{ Waitoptions, 3 }, { Rusage | OUT, 4 }, { Ptr, 5 } } },
.args = { { Idtype, 0 }, { Quad, 1 + QUAD_ALIGN },
{ ExitStatus | OUT, 1 + QUAD_ALIGN + QUAD_SLOTS },
{ Waitoptions, 2 + QUAD_ALIGN + QUAD_SLOTS },
{ Rusage | OUT, 3 + QUAD_ALIGN + QUAD_SLOTS },
{ Ptr, 4 + QUAD_ALIGN + QUAD_SLOTS } } },
{ .name = "procctl", .ret_type = 1, .nargs = 4,
.args = { { Idtype, 0 }, { Int, 1 }, { Procctl, 2 }, { Ptr, 3 } } },
.args = { { Idtype, 0 }, { Quad, 1 + QUAD_ALIGN },
{ Procctl, 1 + QUAD_ALIGN + QUAD_SLOTS },
{ Ptr, 2 + QUAD_ALIGN + QUAD_SLOTS } } },
{ .name = "sysarch", .ret_type = 1, .nargs = 2,
.args = { { Sysarch, 0 }, { Ptr, 1 } } },
{ .name = "_umtx_op", .ret_type = 1, .nargs = 5,
@ -966,10 +971,14 @@ print_arg(struct syscall_args *sc, unsigned long *args, long *retval,
}
#ifdef __LP64__
case Quad:
fprintf(fp, "%ld", args[sc->offset]);
break;
case QuadHex:
fprintf(fp, "0x%lx", args[sc->offset]);
break;
#else
case Quad: {
case Quad:
case QuadHex: {
unsigned long long ll;
#if _BYTE_ORDER == _LITTLE_ENDIAN
@ -979,7 +988,10 @@ print_arg(struct syscall_args *sc, unsigned long *args, long *retval,
ll = (unsigned long long)args[sc->offset] << 32 |
args[sc->offset + 1];
#endif
fprintf(fp, "0x%llx", ll);
if ((sc->type & ARG_MASK) == Quad)
fprintf(fp, "%lld", ll);
else
fprintf(fp, "0x%llx", ll);
break;
}
#endif