2 * System call table mapper
4 * (C) 2016 Arnaldo Carvalho de Melo <acme@redhat.com>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 #include "syscalltbl.h"
18 #include <linux/compiler.h>
20 #ifdef HAVE_SYSCALL_TABLE
25 #if defined(__x86_64__)
26 #include <asm/syscalls_64.c>
27 const int syscalltbl_native_max_id = SYSCALLTBL_x86_64_MAX_ID;
28 static const char **syscalltbl_native = syscalltbl_x86_64;
36 static int syscallcmpname(const void *vkey, const void *ventry)
38 const char *key = vkey;
39 const struct syscall *entry = ventry;
41 return strcmp(key, entry->name);
44 static int syscallcmp(const void *va, const void *vb)
46 const struct syscall *a = va, *b = vb;
48 return strcmp(a->name, b->name);
51 static int syscalltbl__init_native(struct syscalltbl *tbl)
53 int nr_entries = 0, i, j;
54 struct syscall *entries;
56 for (i = 0; i <= syscalltbl_native_max_id; ++i)
57 if (syscalltbl_native[i])
60 entries = tbl->syscalls.entries = malloc(sizeof(struct syscall) * nr_entries);
61 if (tbl->syscalls.entries == NULL)
64 for (i = 0, j = 0; i <= syscalltbl_native_max_id; ++i) {
65 if (syscalltbl_native[i]) {
66 entries[j].name = syscalltbl_native[i];
72 qsort(tbl->syscalls.entries, nr_entries, sizeof(struct syscall), syscallcmp);
73 tbl->syscalls.nr_entries = nr_entries;
77 struct syscalltbl *syscalltbl__new(void)
79 struct syscalltbl *tbl = malloc(sizeof(*tbl));
81 if (syscalltbl__init_native(tbl)) {
89 void syscalltbl__delete(struct syscalltbl *tbl)
91 zfree(&tbl->syscalls.entries);
95 const char *syscalltbl__name(const struct syscalltbl *tbl __maybe_unused, int id)
97 return id <= syscalltbl_native_max_id ? syscalltbl_native[id]: NULL;
100 int syscalltbl__id(struct syscalltbl *tbl, const char *name)
102 struct syscall *sc = bsearch(name, tbl->syscalls.entries,
103 tbl->syscalls.nr_entries, sizeof(*sc),
106 return sc ? sc->id : -1;
109 int syscalltbl__strglobmatch_next(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
112 struct syscall *syscalls = tbl->syscalls.entries;
114 for (i = *idx + 1; i < tbl->syscalls.nr_entries; ++i) {
115 if (strglobmatch(syscalls[i].name, syscall_glob)) {
117 return syscalls[i].id;
124 int syscalltbl__strglobmatch_first(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
127 return syscalltbl__strglobmatch_next(tbl, syscall_glob, idx);
130 #else /* HAVE_SYSCALL_TABLE */
132 #include <libaudit.h>
134 struct syscalltbl *syscalltbl__new(void)
136 struct syscalltbl *tbl = malloc(sizeof(*tbl));
138 tbl->audit_machine = audit_detect_machine();
142 void syscalltbl__delete(struct syscalltbl *tbl)
147 const char *syscalltbl__name(const struct syscalltbl *tbl, int id)
149 return audit_syscall_to_name(id, tbl->audit_machine);
152 int syscalltbl__id(struct syscalltbl *tbl, const char *name)
154 return audit_name_to_syscall(name, tbl->audit_machine);
157 int syscalltbl__strglobmatch_next(struct syscalltbl *tbl __maybe_unused,
158 const char *syscall_glob __maybe_unused, int *idx __maybe_unused)
163 int syscalltbl__strglobmatch_first(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
165 return syscalltbl__strglobmatch_next(tbl, syscall_glob, idx);
167 #endif /* HAVE_SYSCALL_TABLE */