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syscalls.c (288626) syscalls.c (288832)
1/*
2 * Copyright 1997 Sean Eric Fagan
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.

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25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
1/*
2 * Copyright 1997 Sean Eric Fagan
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.

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25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__FBSDID("$FreeBSD: head/usr.bin/truss/syscalls.c 288626 2015-10-03 19:08:36Z bdrewery $");
33__FBSDID("$FreeBSD: head/usr.bin/truss/syscalls.c 288832 2015-10-05 18:08:35Z bdrewery $");
34
35/*
36 * This file has routines used to print out system calls and their
37 * arguments.
38 */
39
40#include <sys/types.h>
41#include <sys/event.h>

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84#define QUAD_SLOTS 1
85#else
86#define QUAD_SLOTS 2
87#endif
88
89/*
90 * This should probably be in its own file, sorted alphabetically.
91 */
34
35/*
36 * This file has routines used to print out system calls and their
37 * arguments.
38 */
39
40#include <sys/types.h>
41#include <sys/event.h>

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84#define QUAD_SLOTS 1
85#else
86#define QUAD_SLOTS 2
87#endif
88
89/*
90 * This should probably be in its own file, sorted alphabetically.
91 */
92static struct syscall syscalls[] = {
92static struct syscall decoded_syscalls[] = {
93 { .name = "fcntl", .ret_type = 1, .nargs = 3,
94 .args = { { Int, 0 }, { Fcntl, 1 }, { Fcntlflag, 2 } } },
95 { .name = "rfork", .ret_type = 1, .nargs = 1,
96 .args = { { Rforkflags, 0 } } },
97 { .name = "linux_readlink", .ret_type = 1, .nargs = 3,
98 .args = { { Name, 0 }, { Name | OUT, 1 }, { Int, 2 } } },
99 { .name = "linux_socketcall", .ret_type = 1, .nargs = 2,
100 .args = { { Int, 0 }, { LinuxSockArgs, 1 } } },

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365 .args = { { Ptr, 0 }, { Umtxop, 1 }, { LongHex, 2 }, { Ptr, 3 },
366 { Ptr, 4 } } },
367 { .name = "thr_kill", .ret_type = 1, .nargs = 2,
368 .args = { { Long, 0 }, { Signal, 1 } } },
369 { .name = "thr_self", .ret_type = 1, .nargs = 1,
370 .args = { { Ptr, 0 } } },
371 { .name = 0 },
372};
93 { .name = "fcntl", .ret_type = 1, .nargs = 3,
94 .args = { { Int, 0 }, { Fcntl, 1 }, { Fcntlflag, 2 } } },
95 { .name = "rfork", .ret_type = 1, .nargs = 1,
96 .args = { { Rforkflags, 0 } } },
97 { .name = "linux_readlink", .ret_type = 1, .nargs = 3,
98 .args = { { Name, 0 }, { Name | OUT, 1 }, { Int, 2 } } },
99 { .name = "linux_socketcall", .ret_type = 1, .nargs = 2,
100 .args = { { Int, 0 }, { LinuxSockArgs, 1 } } },

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365 .args = { { Ptr, 0 }, { Umtxop, 1 }, { LongHex, 2 }, { Ptr, 3 },
366 { Ptr, 4 } } },
367 { .name = "thr_kill", .ret_type = 1, .nargs = 2,
368 .args = { { Long, 0 }, { Signal, 1 } } },
369 { .name = "thr_self", .ret_type = 1, .nargs = 1,
370 .args = { { Ptr, 0 } } },
371 { .name = 0 },
372};
373static STAILQ_HEAD(, syscall) syscalls;
373
374/* Xlat idea taken from strace */
375struct xlat {
376 int val;
377 const char *str;
378};
379
380#define X(a) { a, #a },

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654 if (rem || len == 0)
655 len += sprintf(str + len, "0x%x", rem);
656 if (len && str[len - 1] == '|')
657 len--;
658 str[len] = 0;
659 return (str);
660}
661
374
375/* Xlat idea taken from strace */
376struct xlat {
377 int val;
378 const char *str;
379};
380
381#define X(a) { a, #a },

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655 if (rem || len == 0)
656 len += sprintf(str + len, "0x%x", rem);
657 if (len && str[len - 1] == '|')
658 len--;
659 str[len] = 0;
660 return (str);
661}
662
663void
664init_syscalls(void)
665{
666 struct syscall *sc;
667
668 STAILQ_INIT(&syscalls);
669 for (sc = decoded_syscalls; sc->name != NULL; sc++)
670 STAILQ_INSERT_HEAD(&syscalls, sc, entries);
671}
662/*
663 * If/when the list gets big, it might be desirable to do it
664 * as a hash table or binary search.
665 */
666struct syscall *
672/*
673 * If/when the list gets big, it might be desirable to do it
674 * as a hash table or binary search.
675 */
676struct syscall *
667get_syscall(const char *name)
677get_syscall(const char *name, int nargs)
668{
669 struct syscall *sc;
678{
679 struct syscall *sc;
680 int i;
670
681
671 sc = syscalls;
672 if (name == NULL)
673 return (NULL);
682 if (name == NULL)
683 return (NULL);
674 while (sc->name) {
684 STAILQ_FOREACH(sc, &syscalls, entries)
675 if (strcmp(name, sc->name) == 0)
676 return (sc);
685 if (strcmp(name, sc->name) == 0)
686 return (sc);
677 sc++;
687
688 /* It is unknown. Add it into the list. */
689#if DEBUG
690 fprintf(stderr, "unknown syscall %s -- setting args to %d\n", name,
691 nargs);
692#endif
693
694 sc = calloc(1, sizeof(struct syscall));
695 sc->name = strdup(name);
696 sc->ret_type = 1;
697 sc->nargs = nargs;
698 for (i = 0; i < nargs; i++) {
699 sc->args[i].offset = i;
700 /* Treat all unknown arguments as LongHex. */
701 sc->args[i].type = LongHex;
678 }
702 }
679 return (NULL);
703 STAILQ_INSERT_HEAD(&syscalls, sc, entries);
704
705 return (sc);
680}
681
682/*
683 * Copy a fixed amount of bytes from the process.
684 */
685static int
686get_struct(pid_t pid, void *offset, void *buf, int len)
687{

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1627
1628void
1629print_syscall_ret(struct trussinfo *trussinfo, const char *name, int nargs,
1630 char **s_args, int errorp, long *retval, struct syscall *sc)
1631{
1632 struct timespec timediff;
1633
1634 if (trussinfo->flags & COUNTONLY) {
706}
707
708/*
709 * Copy a fixed amount of bytes from the process.
710 */
711static int
712get_struct(pid_t pid, void *offset, void *buf, int len)
713{

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1653
1654void
1655print_syscall_ret(struct trussinfo *trussinfo, const char *name, int nargs,
1656 char **s_args, int errorp, long *retval, struct syscall *sc)
1657{
1658 struct timespec timediff;
1659
1660 if (trussinfo->flags & COUNTONLY) {
1635 if (!sc)
1636 return;
1637 clock_gettime(CLOCK_REALTIME, &trussinfo->curthread->after);
1638 timespecsubt(&trussinfo->curthread->after,
1639 &trussinfo->curthread->before, &timediff);
1640 timespecadd(&sc->time, &timediff, &sc->time);
1641 sc->ncalls++;
1642 if (errorp)
1643 sc->nerror++;
1644 return;
1645 }
1646
1647 print_syscall(trussinfo, name, nargs, s_args);
1648 fflush(trussinfo->outfile);
1649 if (errorp)
1650 fprintf(trussinfo->outfile, " ERR#%ld '%s'\n", retval[0],
1651 strerror(retval[0]));
1652#ifndef __LP64__
1661 clock_gettime(CLOCK_REALTIME, &trussinfo->curthread->after);
1662 timespecsubt(&trussinfo->curthread->after,
1663 &trussinfo->curthread->before, &timediff);
1664 timespecadd(&sc->time, &timediff, &sc->time);
1665 sc->ncalls++;
1666 if (errorp)
1667 sc->nerror++;
1668 return;
1669 }
1670
1671 print_syscall(trussinfo, name, nargs, s_args);
1672 fflush(trussinfo->outfile);
1673 if (errorp)
1674 fprintf(trussinfo->outfile, " ERR#%ld '%s'\n", retval[0],
1675 strerror(retval[0]));
1676#ifndef __LP64__
1653 else if (sc != NULL && sc->ret_type == 2) {
1677 else if (sc->ret_type == 2) {
1654 off_t off;
1655
1656#if _BYTE_ORDER == _LITTLE_ENDIAN
1657 off = (off_t)retval[1] << 32 | retval[0];
1658#else
1659 off = (off_t)retval[0] << 32 | retval[1];
1660#endif
1661 fprintf(trussinfo->outfile, " = %jd (0x%jx)\n", (intmax_t)off,

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1672{
1673 struct timespec total = {0, 0};
1674 struct syscall *sc;
1675 int ncall, nerror;
1676
1677 fprintf(trussinfo->outfile, "%-20s%15s%8s%8s\n",
1678 "syscall", "seconds", "calls", "errors");
1679 ncall = nerror = 0;
1678 off_t off;
1679
1680#if _BYTE_ORDER == _LITTLE_ENDIAN
1681 off = (off_t)retval[1] << 32 | retval[0];
1682#else
1683 off = (off_t)retval[0] << 32 | retval[1];
1684#endif
1685 fprintf(trussinfo->outfile, " = %jd (0x%jx)\n", (intmax_t)off,

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1696{
1697 struct timespec total = {0, 0};
1698 struct syscall *sc;
1699 int ncall, nerror;
1700
1701 fprintf(trussinfo->outfile, "%-20s%15s%8s%8s\n",
1702 "syscall", "seconds", "calls", "errors");
1703 ncall = nerror = 0;
1680 for (sc = syscalls; sc->name != NULL; sc++)
1704 STAILQ_FOREACH(sc, &syscalls, entries)
1681 if (sc->ncalls) {
1682 fprintf(trussinfo->outfile, "%-20s%5jd.%09ld%8d%8d\n",
1683 sc->name, (intmax_t)sc->time.tv_sec,
1684 sc->time.tv_nsec, sc->ncalls, sc->nerror);
1685 timespecadd(&total, &sc->time, &total);
1686 ncall += sc->ncalls;
1687 nerror += sc->nerror;
1688 }
1689 fprintf(trussinfo->outfile, "%20s%15s%8s%8s\n",
1690 "", "-------------", "-------", "-------");
1691 fprintf(trussinfo->outfile, "%-20s%5jd.%09ld%8d%8d\n",
1692 "", (intmax_t)total.tv_sec, total.tv_nsec, ncall, nerror);
1693}
1705 if (sc->ncalls) {
1706 fprintf(trussinfo->outfile, "%-20s%5jd.%09ld%8d%8d\n",
1707 sc->name, (intmax_t)sc->time.tv_sec,
1708 sc->time.tv_nsec, sc->ncalls, sc->nerror);
1709 timespecadd(&total, &sc->time, &total);
1710 ncall += sc->ncalls;
1711 nerror += sc->nerror;
1712 }
1713 fprintf(trussinfo->outfile, "%20s%15s%8s%8s\n",
1714 "", "-------------", "-------", "-------");
1715 fprintf(trussinfo->outfile, "%-20s%5jd.%09ld%8d%8d\n",
1716 "", (intmax_t)total.tv_sec, total.tv_nsec, ncall, nerror);
1717}