diff options
Diffstat (limited to 'usr.bin/truss/syscalls.c')
| -rw-r--r-- | usr.bin/truss/syscalls.c | 44 |
1 files changed, 34 insertions, 10 deletions
diff --git a/usr.bin/truss/syscalls.c b/usr.bin/truss/syscalls.c index 6211bae..8218b77 100644 --- a/usr.bin/truss/syscalls.c +++ b/usr.bin/truss/syscalls.c @@ -89,7 +89,7 @@ __FBSDID("$FreeBSD$"); /* * This should probably be in its own file, sorted alphabetically. */ -static struct syscall syscalls[] = { +static struct syscall decoded_syscalls[] = { { .name = "fcntl", .ret_type = 1, .nargs = 3, .args = { { Int, 0 }, { Fcntl, 1 }, { Fcntlflag, 2 } } }, { .name = "rfork", .ret_type = 1, .nargs = 1, @@ -370,6 +370,7 @@ static struct syscall syscalls[] = { .args = { { Ptr, 0 } } }, { .name = 0 }, }; +static STAILQ_HEAD(, syscall) syscalls; /* Xlat idea taken from strace */ struct xlat { @@ -659,24 +660,49 @@ xlookup_bits(struct xlat *xlat, int val) return (str); } +void +init_syscalls(void) +{ + struct syscall *sc; + + STAILQ_INIT(&syscalls); + for (sc = decoded_syscalls; sc->name != NULL; sc++) + STAILQ_INSERT_HEAD(&syscalls, sc, entries); +} /* * If/when the list gets big, it might be desirable to do it * as a hash table or binary search. */ struct syscall * -get_syscall(const char *name) +get_syscall(const char *name, int nargs) { struct syscall *sc; + int i; - sc = syscalls; if (name == NULL) return (NULL); - while (sc->name) { + STAILQ_FOREACH(sc, &syscalls, entries) if (strcmp(name, sc->name) == 0) return (sc); - sc++; + + /* It is unknown. Add it into the list. */ +#if DEBUG + fprintf(stderr, "unknown syscall %s -- setting args to %d\n", name, + nargs); +#endif + + sc = calloc(1, sizeof(struct syscall)); + sc->name = strdup(name); + sc->ret_type = 1; + sc->nargs = nargs; + for (i = 0; i < nargs; i++) { + sc->args[i].offset = i; + /* Treat all unknown arguments as LongHex. */ + sc->args[i].type = LongHex; } - return (NULL); + STAILQ_INSERT_HEAD(&syscalls, sc, entries); + + return (sc); } /* @@ -1632,8 +1658,6 @@ print_syscall_ret(struct trussinfo *trussinfo, const char *name, int nargs, struct timespec timediff; if (trussinfo->flags & COUNTONLY) { - if (!sc) - return; clock_gettime(CLOCK_REALTIME, &trussinfo->curthread->after); timespecsubt(&trussinfo->curthread->after, &trussinfo->curthread->before, &timediff); @@ -1650,7 +1674,7 @@ print_syscall_ret(struct trussinfo *trussinfo, const char *name, int nargs, fprintf(trussinfo->outfile, " ERR#%ld '%s'\n", retval[0], strerror(retval[0])); #ifndef __LP64__ - else if (sc != NULL && sc->ret_type == 2) { + else if (sc->ret_type == 2) { off_t off; #if _BYTE_ORDER == _LITTLE_ENDIAN @@ -1677,7 +1701,7 @@ print_summary(struct trussinfo *trussinfo) fprintf(trussinfo->outfile, "%-20s%15s%8s%8s\n", "syscall", "seconds", "calls", "errors"); ncall = nerror = 0; - for (sc = syscalls; sc->name != NULL; sc++) + STAILQ_FOREACH(sc, &syscalls, entries) if (sc->ncalls) { fprintf(trussinfo->outfile, "%-20s%5jd.%09ld%8d%8d\n", sc->name, (intmax_t)sc->time.tv_sec, |
