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 *const *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 *const *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 *const *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 *const *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 *const *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 *const *syscalltbl_native = syscalltbl_mips_n64;
45 #elif defined(__loongarch__) 41 #elif defined(__loongarch__)
46 #include <asm/syscalls.c> 42 #include <asm/syscalls.c>
47 const int syscalltbl_native_max_id = SYSCALLTB 43 const int syscalltbl_native_max_id = SYSCALLTBL_LOONGARCH_MAX_ID;
48 static const char *const *syscalltbl_native = 44 static const char *const *syscalltbl_native = syscalltbl_loongarch;
49 #else <<
50 const int syscalltbl_native_max_id = 0; <<
51 static const char *const syscalltbl_native[] = <<
52 [0] = "unknown", <<
53 }; <<
54 #endif 45 #endif
55 46
56 struct syscall { 47 struct syscall {
57 int id; 48 int id;
58 const char *name; 49 const char *name;
59 }; 50 };
60 51
61 static int syscallcmpname(const void *vkey, co 52 static int syscallcmpname(const void *vkey, const void *ventry)
62 { 53 {
63 const char *key = vkey; 54 const char *key = vkey;
64 const struct syscall *entry = ventry; 55 const struct syscall *entry = ventry;
65 56
66 return strcmp(key, entry->name); 57 return strcmp(key, entry->name);
67 } 58 }
68 59
69 static int syscallcmp(const void *va, const vo 60 static int syscallcmp(const void *va, const void *vb)
70 { 61 {
71 const struct syscall *a = va, *b = vb; 62 const struct syscall *a = va, *b = vb;
72 63
73 return strcmp(a->name, b->name); 64 return strcmp(a->name, b->name);
74 } 65 }
75 66
76 static int syscalltbl__init_native(struct sysc 67 static int syscalltbl__init_native(struct syscalltbl *tbl)
77 { 68 {
78 int nr_entries = 0, i, j; 69 int nr_entries = 0, i, j;
79 struct syscall *entries; 70 struct syscall *entries;
80 71
81 for (i = 0; i <= syscalltbl_native_max 72 for (i = 0; i <= syscalltbl_native_max_id; ++i)
82 if (syscalltbl_native[i]) 73 if (syscalltbl_native[i])
83 ++nr_entries; 74 ++nr_entries;
84 75
85 entries = tbl->syscalls.entries = mall 76 entries = tbl->syscalls.entries = malloc(sizeof(struct syscall) * nr_entries);
86 if (tbl->syscalls.entries == NULL) 77 if (tbl->syscalls.entries == NULL)
87 return -1; 78 return -1;
88 79
89 for (i = 0, j = 0; i <= syscalltbl_nat 80 for (i = 0, j = 0; i <= syscalltbl_native_max_id; ++i) {
90 if (syscalltbl_native[i]) { 81 if (syscalltbl_native[i]) {
91 entries[j].name = sysc 82 entries[j].name = syscalltbl_native[i];
92 entries[j].id = i; 83 entries[j].id = i;
93 ++j; 84 ++j;
94 } 85 }
95 } 86 }
96 87
97 qsort(tbl->syscalls.entries, nr_entrie 88 qsort(tbl->syscalls.entries, nr_entries, sizeof(struct syscall), syscallcmp);
98 tbl->syscalls.nr_entries = nr_entries; 89 tbl->syscalls.nr_entries = nr_entries;
99 tbl->syscalls.max_id = syscalltbl_ 90 tbl->syscalls.max_id = syscalltbl_native_max_id;
100 return 0; 91 return 0;
101 } 92 }
102 93
103 struct syscalltbl *syscalltbl__new(void) 94 struct syscalltbl *syscalltbl__new(void)
104 { 95 {
105 struct syscalltbl *tbl = malloc(sizeof 96 struct syscalltbl *tbl = malloc(sizeof(*tbl));
106 if (tbl) { 97 if (tbl) {
107 if (syscalltbl__init_native(tb 98 if (syscalltbl__init_native(tbl)) {
108 free(tbl); 99 free(tbl);
109 return NULL; 100 return NULL;
110 } 101 }
111 } 102 }
112 return tbl; 103 return tbl;
113 } 104 }
114 105
115 void syscalltbl__delete(struct syscalltbl *tbl 106 void syscalltbl__delete(struct syscalltbl *tbl)
116 { 107 {
117 zfree(&tbl->syscalls.entries); 108 zfree(&tbl->syscalls.entries);
118 free(tbl); 109 free(tbl);
119 } 110 }
120 111
121 const char *syscalltbl__name(const struct sysc 112 const char *syscalltbl__name(const struct syscalltbl *tbl __maybe_unused, int id)
122 { 113 {
123 return id <= syscalltbl_native_max_id 114 return id <= syscalltbl_native_max_id ? syscalltbl_native[id]: NULL;
124 } 115 }
125 116
126 int syscalltbl__id(struct syscalltbl *tbl, con 117 int syscalltbl__id(struct syscalltbl *tbl, const char *name)
127 { 118 {
128 struct syscall *sc = bsearch(name, tbl 119 struct syscall *sc = bsearch(name, tbl->syscalls.entries,
129 tbl->sysc 120 tbl->syscalls.nr_entries, sizeof(*sc),
130 syscallcm 121 syscallcmpname);
131 122
132 return sc ? sc->id : -1; 123 return sc ? sc->id : -1;
133 } 124 }
134 125
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 126 int syscalltbl__strglobmatch_next(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
143 { 127 {
144 int i; 128 int i;
145 struct syscall *syscalls = tbl->syscal 129 struct syscall *syscalls = tbl->syscalls.entries;
146 130
147 for (i = *idx + 1; i < tbl->syscalls.n 131 for (i = *idx + 1; i < tbl->syscalls.nr_entries; ++i) {
148 if (strglobmatch(syscalls[i].n 132 if (strglobmatch(syscalls[i].name, syscall_glob)) {
149 *idx = i; 133 *idx = i;
150 return syscalls[i].id; 134 return syscalls[i].id;
151 } 135 }
152 } 136 }
153 137
154 return -1; 138 return -1;
155 } 139 }
156 140
157 int syscalltbl__strglobmatch_first(struct sysc 141 int syscalltbl__strglobmatch_first(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
158 { 142 {
159 *idx = -1; 143 *idx = -1;
160 return syscalltbl__strglobmatch_next(t 144 return syscalltbl__strglobmatch_next(tbl, syscall_glob, idx);
161 } 145 }
162 146
163 #else /* HAVE_SYSCALL_TABLE_SUPPORT */ 147 #else /* HAVE_SYSCALL_TABLE_SUPPORT */
164 148
165 #include <libaudit.h> 149 #include <libaudit.h>
166 150
167 struct syscalltbl *syscalltbl__new(void) 151 struct syscalltbl *syscalltbl__new(void)
168 { 152 {
169 struct syscalltbl *tbl = zalloc(sizeof 153 struct syscalltbl *tbl = zalloc(sizeof(*tbl));
170 if (tbl) 154 if (tbl)
171 tbl->audit_machine = audit_det 155 tbl->audit_machine = audit_detect_machine();
172 return tbl; 156 return tbl;
173 } 157 }
174 158
175 void syscalltbl__delete(struct syscalltbl *tbl 159 void syscalltbl__delete(struct syscalltbl *tbl)
176 { 160 {
177 free(tbl); 161 free(tbl);
178 } 162 }
179 163
180 const char *syscalltbl__name(const struct sysc 164 const char *syscalltbl__name(const struct syscalltbl *tbl, int id)
181 { 165 {
182 return audit_syscall_to_name(id, tbl-> 166 return audit_syscall_to_name(id, tbl->audit_machine);
183 } 167 }
184 168
185 int syscalltbl__id(struct syscalltbl *tbl, con 169 int syscalltbl__id(struct syscalltbl *tbl, const char *name)
186 { 170 {
187 return audit_name_to_syscall(name, tbl 171 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 } 172 }
194 173
195 int syscalltbl__strglobmatch_next(struct sysca 174 int syscalltbl__strglobmatch_next(struct syscalltbl *tbl __maybe_unused,
196 const char * 175 const char *syscall_glob __maybe_unused, int *idx __maybe_unused)
197 { 176 {
198 return -1; 177 return -1;
199 } 178 }
200 179
201 int syscalltbl__strglobmatch_first(struct sysc 180 int syscalltbl__strglobmatch_first(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
202 { 181 {
203 return syscalltbl__strglobmatch_next(t 182 return syscalltbl__strglobmatch_next(tbl, syscall_glob, idx);
204 } 183 }
205 #endif /* HAVE_SYSCALL_TABLE_SUPPORT */ 184 #endif /* HAVE_SYSCALL_TABLE_SUPPORT */
206 185
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.