1 // SPDX-License-Identifier: GPL-2.0-only 1 // SPDX-License-Identifier: GPL-2.0-only
2 /* 2 /*
3 * System call table mapper 3 * System call table mapper
4 * 4 *
5 * (C) 2016 Arnaldo Carvalho de Melo <acme@red 5 * (C) 2016 Arnaldo Carvalho de Melo <acme@redhat.com>
6 */ 6 */
7 7
8 #include "syscalltbl.h" 8 #include "syscalltbl.h"
9 #include <stdlib.h> 9 #include <stdlib.h>
10 #include <linux/compiler.h> 10 #include <linux/compiler.h>
11 #include <linux/zalloc.h> 11 #include <linux/zalloc.h>
12 12
13 #ifdef HAVE_SYSCALL_TABLE_SUPPORT 13 #ifdef HAVE_SYSCALL_TABLE_SUPPORT
14 #include <string.h> 14 #include <string.h>
15 #include "string2.h" 15 #include "string2.h"
16 16
17 #if defined(__x86_64__) 17 #if defined(__x86_64__)
18 #include <asm/syscalls_64.c> 18 #include <asm/syscalls_64.c>
19 const int syscalltbl_native_max_id = SYSCALLTB 19 const int syscalltbl_native_max_id = SYSCALLTBL_x86_64_MAX_ID;
20 static const char *const *syscalltbl_native = !! 20 static const char **syscalltbl_native = syscalltbl_x86_64;
21 #elif defined(__i386__) <<
22 #include <asm/syscalls_32.c> <<
23 const int syscalltbl_native_max_id = SYSCALLTB <<
24 static const char *const *syscalltbl_native = <<
25 #elif defined(__s390x__) 21 #elif defined(__s390x__)
26 #include <asm/syscalls_64.c> 22 #include <asm/syscalls_64.c>
27 const int syscalltbl_native_max_id = SYSCALLTB 23 const int syscalltbl_native_max_id = SYSCALLTBL_S390_64_MAX_ID;
28 static const char *const *syscalltbl_native = !! 24 static const char **syscalltbl_native = syscalltbl_s390_64;
29 #elif defined(__powerpc64__) 25 #elif defined(__powerpc64__)
30 #include <asm/syscalls_64.c> 26 #include <asm/syscalls_64.c>
31 const int syscalltbl_native_max_id = SYSCALLTB 27 const int syscalltbl_native_max_id = SYSCALLTBL_POWERPC_64_MAX_ID;
32 static const char *const *syscalltbl_native = !! 28 static const char **syscalltbl_native = syscalltbl_powerpc_64;
33 #elif defined(__powerpc__) 29 #elif defined(__powerpc__)
34 #include <asm/syscalls_32.c> 30 #include <asm/syscalls_32.c>
35 const int syscalltbl_native_max_id = SYSCALLTB 31 const int syscalltbl_native_max_id = SYSCALLTBL_POWERPC_32_MAX_ID;
36 static const char *const *syscalltbl_native = !! 32 static const char **syscalltbl_native = syscalltbl_powerpc_32;
37 #elif defined(__aarch64__) 33 #elif defined(__aarch64__)
38 #include <asm/syscalls.c> 34 #include <asm/syscalls.c>
39 const int syscalltbl_native_max_id = SYSCALLTB 35 const int syscalltbl_native_max_id = SYSCALLTBL_ARM64_MAX_ID;
40 static const char *const *syscalltbl_native = !! 36 static const char **syscalltbl_native = syscalltbl_arm64;
41 #elif defined(__mips__) 37 #elif defined(__mips__)
42 #include <asm/syscalls_n64.c> 38 #include <asm/syscalls_n64.c>
43 const int syscalltbl_native_max_id = SYSCALLTB 39 const int syscalltbl_native_max_id = SYSCALLTBL_MIPS_N64_MAX_ID;
44 static const char *const *syscalltbl_native = !! 40 static const char **syscalltbl_native = syscalltbl_mips_n64;
45 #elif defined(__loongarch__) <<
46 #include <asm/syscalls.c> <<
47 const int syscalltbl_native_max_id = SYSCALLTB <<
48 static const char *const *syscalltbl_native = <<
49 #else <<
50 const int syscalltbl_native_max_id = 0; <<
51 static const char *const syscalltbl_native[] = <<
52 [0] = "unknown", <<
53 }; <<
54 #endif 41 #endif
55 42
56 struct syscall { 43 struct syscall {
57 int id; 44 int id;
58 const char *name; 45 const char *name;
59 }; 46 };
60 47
61 static int syscallcmpname(const void *vkey, co 48 static int syscallcmpname(const void *vkey, const void *ventry)
62 { 49 {
63 const char *key = vkey; 50 const char *key = vkey;
64 const struct syscall *entry = ventry; 51 const struct syscall *entry = ventry;
65 52
66 return strcmp(key, entry->name); 53 return strcmp(key, entry->name);
67 } 54 }
68 55
69 static int syscallcmp(const void *va, const vo 56 static int syscallcmp(const void *va, const void *vb)
70 { 57 {
71 const struct syscall *a = va, *b = vb; 58 const struct syscall *a = va, *b = vb;
72 59
73 return strcmp(a->name, b->name); 60 return strcmp(a->name, b->name);
74 } 61 }
75 62
76 static int syscalltbl__init_native(struct sysc 63 static int syscalltbl__init_native(struct syscalltbl *tbl)
77 { 64 {
78 int nr_entries = 0, i, j; 65 int nr_entries = 0, i, j;
79 struct syscall *entries; 66 struct syscall *entries;
80 67
81 for (i = 0; i <= syscalltbl_native_max 68 for (i = 0; i <= syscalltbl_native_max_id; ++i)
82 if (syscalltbl_native[i]) 69 if (syscalltbl_native[i])
83 ++nr_entries; 70 ++nr_entries;
84 71
85 entries = tbl->syscalls.entries = mall 72 entries = tbl->syscalls.entries = malloc(sizeof(struct syscall) * nr_entries);
86 if (tbl->syscalls.entries == NULL) 73 if (tbl->syscalls.entries == NULL)
87 return -1; 74 return -1;
88 75
89 for (i = 0, j = 0; i <= syscalltbl_nat 76 for (i = 0, j = 0; i <= syscalltbl_native_max_id; ++i) {
90 if (syscalltbl_native[i]) { 77 if (syscalltbl_native[i]) {
91 entries[j].name = sysc 78 entries[j].name = syscalltbl_native[i];
92 entries[j].id = i; 79 entries[j].id = i;
93 ++j; 80 ++j;
94 } 81 }
95 } 82 }
96 83
97 qsort(tbl->syscalls.entries, nr_entrie 84 qsort(tbl->syscalls.entries, nr_entries, sizeof(struct syscall), syscallcmp);
98 tbl->syscalls.nr_entries = nr_entries; 85 tbl->syscalls.nr_entries = nr_entries;
99 tbl->syscalls.max_id = syscalltbl_ 86 tbl->syscalls.max_id = syscalltbl_native_max_id;
100 return 0; 87 return 0;
101 } 88 }
102 89
103 struct syscalltbl *syscalltbl__new(void) 90 struct syscalltbl *syscalltbl__new(void)
104 { 91 {
105 struct syscalltbl *tbl = malloc(sizeof 92 struct syscalltbl *tbl = malloc(sizeof(*tbl));
106 if (tbl) { 93 if (tbl) {
107 if (syscalltbl__init_native(tb 94 if (syscalltbl__init_native(tbl)) {
108 free(tbl); 95 free(tbl);
109 return NULL; 96 return NULL;
110 } 97 }
111 } 98 }
112 return tbl; 99 return tbl;
113 } 100 }
114 101
115 void syscalltbl__delete(struct syscalltbl *tbl 102 void syscalltbl__delete(struct syscalltbl *tbl)
116 { 103 {
117 zfree(&tbl->syscalls.entries); 104 zfree(&tbl->syscalls.entries);
118 free(tbl); 105 free(tbl);
119 } 106 }
120 107
121 const char *syscalltbl__name(const struct sysc 108 const char *syscalltbl__name(const struct syscalltbl *tbl __maybe_unused, int id)
122 { 109 {
123 return id <= syscalltbl_native_max_id 110 return id <= syscalltbl_native_max_id ? syscalltbl_native[id]: NULL;
124 } 111 }
125 112
126 int syscalltbl__id(struct syscalltbl *tbl, con 113 int syscalltbl__id(struct syscalltbl *tbl, const char *name)
127 { 114 {
128 struct syscall *sc = bsearch(name, tbl 115 struct syscall *sc = bsearch(name, tbl->syscalls.entries,
129 tbl->sysc 116 tbl->syscalls.nr_entries, sizeof(*sc),
130 syscallcm 117 syscallcmpname);
131 118
132 return sc ? sc->id : -1; 119 return sc ? sc->id : -1;
133 } 120 }
134 121
135 int syscalltbl__id_at_idx(struct syscalltbl *t <<
136 { <<
137 struct syscall *syscalls = tbl->syscal <<
138 <<
139 return idx < tbl->syscalls.nr_entries <<
140 } <<
141 <<
142 int syscalltbl__strglobmatch_next(struct sysca 122 int syscalltbl__strglobmatch_next(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
143 { 123 {
144 int i; 124 int i;
145 struct syscall *syscalls = tbl->syscal 125 struct syscall *syscalls = tbl->syscalls.entries;
146 126
147 for (i = *idx + 1; i < tbl->syscalls.n 127 for (i = *idx + 1; i < tbl->syscalls.nr_entries; ++i) {
148 if (strglobmatch(syscalls[i].n 128 if (strglobmatch(syscalls[i].name, syscall_glob)) {
149 *idx = i; 129 *idx = i;
150 return syscalls[i].id; 130 return syscalls[i].id;
151 } 131 }
152 } 132 }
153 133
154 return -1; 134 return -1;
155 } 135 }
156 136
157 int syscalltbl__strglobmatch_first(struct sysc 137 int syscalltbl__strglobmatch_first(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
158 { 138 {
159 *idx = -1; 139 *idx = -1;
160 return syscalltbl__strglobmatch_next(t 140 return syscalltbl__strglobmatch_next(tbl, syscall_glob, idx);
161 } 141 }
162 142
163 #else /* HAVE_SYSCALL_TABLE_SUPPORT */ 143 #else /* HAVE_SYSCALL_TABLE_SUPPORT */
164 144
165 #include <libaudit.h> 145 #include <libaudit.h>
166 146
167 struct syscalltbl *syscalltbl__new(void) 147 struct syscalltbl *syscalltbl__new(void)
168 { 148 {
169 struct syscalltbl *tbl = zalloc(sizeof 149 struct syscalltbl *tbl = zalloc(sizeof(*tbl));
170 if (tbl) 150 if (tbl)
171 tbl->audit_machine = audit_det 151 tbl->audit_machine = audit_detect_machine();
172 return tbl; 152 return tbl;
173 } 153 }
174 154
175 void syscalltbl__delete(struct syscalltbl *tbl 155 void syscalltbl__delete(struct syscalltbl *tbl)
176 { 156 {
177 free(tbl); 157 free(tbl);
178 } 158 }
179 159
180 const char *syscalltbl__name(const struct sysc 160 const char *syscalltbl__name(const struct syscalltbl *tbl, int id)
181 { 161 {
182 return audit_syscall_to_name(id, tbl-> 162 return audit_syscall_to_name(id, tbl->audit_machine);
183 } 163 }
184 164
185 int syscalltbl__id(struct syscalltbl *tbl, con 165 int syscalltbl__id(struct syscalltbl *tbl, const char *name)
186 { 166 {
187 return audit_name_to_syscall(name, tbl 167 return audit_name_to_syscall(name, tbl->audit_machine);
188 } <<
189 <<
190 int syscalltbl__id_at_idx(struct syscalltbl *t <<
191 { <<
192 return idx; <<
193 } 168 }
194 169
195 int syscalltbl__strglobmatch_next(struct sysca 170 int syscalltbl__strglobmatch_next(struct syscalltbl *tbl __maybe_unused,
196 const char * 171 const char *syscall_glob __maybe_unused, int *idx __maybe_unused)
197 { 172 {
198 return -1; 173 return -1;
199 } 174 }
200 175
201 int syscalltbl__strglobmatch_first(struct sysc 176 int syscalltbl__strglobmatch_first(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
202 { 177 {
203 return syscalltbl__strglobmatch_next(t 178 return syscalltbl__strglobmatch_next(tbl, syscall_glob, idx);
204 } 179 }
205 #endif /* HAVE_SYSCALL_TABLE_SUPPORT */ 180 #endif /* HAVE_SYSCALL_TABLE_SUPPORT */
206 181
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.