| 1 | #define PERL_NO_GET_CONTEXT |
| 2 | #include "EXTERN.h" |
| 3 | #include "perl.h" |
| 4 | #include "XSUB.h" |
| 5 | |
| 6 | #include "ppport.h" |
| 7 | |
| 8 | #include <seccomp.h> |
| 9 | #include <stdio.h> |
| 10 | |
| 11 | #include "const-c.inc" |
| 12 | |
| 13 | #define die_check_errno if(RETVAL < 0) \ |
| 14 | croak("Failed with error %d (%s)\n", RETVAL, strerror(RETVAL)) |
| 15 | |
| 16 | #define die_if_error if(RETVAL == __NR_SCMP_ERROR) \ |
| 17 | croak("Failed to resolve system call %s", name); |
| 18 | |
| 19 | MODULE = Linux::Seccomp PACKAGE = Linux::Seccomp PREFIX = seccomp_ |
| 20 | |
| 21 | INCLUDE: const-xs.inc |
| 22 | PROTOTYPES: ENABLE |
| 23 | |
| 24 | struct scmp_arg_cmp |
| 25 | seccomp_make_arg_cmp(arg, op, datum_a, datum_b = (scmp_datum_t) 0) |
| 26 | unsigned int arg; |
| 27 | enum scmp_compare op; |
| 28 | scmp_datum_t datum_a; |
| 29 | scmp_datum_t datum_b; |
| 30 | PROTOTYPE: DISABLE |
| 31 | CODE: |
| 32 | RETVAL = SCMP_CMP(arg, op, datum_a, datum_b); |
| 33 | OUTPUT: |
| 34 | RETVAL |
| 35 | |
| 36 | U32 SCMP_ACT_ERRNO(I16 errno1) |
| 37 | |
| 38 | U32 SCMP_ACT_TRACE(I16 msg_num) |
| 39 | |
| 40 | |
| 41 | NO_OUTPUT int |
| 42 | seccomp_arch_add(ctx, arch_token) |
| 43 | scmp_filter_ctx ctx |
| 44 | U32 arch_token |
| 45 | POSTCALL: |
| 46 | die_check_errno; |
| 47 | |
| 48 | bool |
| 49 | seccomp_arch_exist(ctx, arch_token) |
| 50 | scmp_filter_ctx ctx |
| 51 | U32 arch_token |
| 52 | PREINIT: |
| 53 | int ret; |
| 54 | CODE: |
| 55 | ret = seccomp_arch_exist(ctx, arch_token); |
| 56 | if(ret != -EEXIST) |
| 57 | die_check_errno; |
| 58 | RETVAL = (ret != -EEXIST); |
| 59 | OUTPUT: |
| 60 | RETVAL |
| 61 | |
| 62 | U32 |
| 63 | seccomp_arch_native() |
| 64 | |
| 65 | NO_OUTPUT int |
| 66 | seccomp_arch_remove(ctx, arch_token) |
| 67 | scmp_filter_ctx ctx |
| 68 | U32 arch_token |
| 69 | POSTCALL: |
| 70 | die_check_errno; |
| 71 | |
| 72 | U32 |
| 73 | seccomp_arch_resolve_name(arch_name) |
| 74 | const char *arch_name |
| 75 | POSTCALL: |
| 76 | die_check_errno; |
| 77 | |
| 78 | NO_OUTPUT int |
| 79 | seccomp_attr_get(ctx, attr, OUTLIST value) |
| 80 | scmp_filter_ctx ctx |
| 81 | enum scmp_filter_attr attr |
| 82 | U32 value |
| 83 | POSTCALL: |
| 84 | die_check_errno; |
| 85 | |
| 86 | NO_OUTPUT int |
| 87 | seccomp_attr_set(ctx, attr, value) |
| 88 | scmp_filter_ctx ctx |
| 89 | enum scmp_filter_attr attr |
| 90 | U32 value |
| 91 | POSTCALL: |
| 92 | die_check_errno; |
| 93 | |
| 94 | NO_OUTPUT int |
| 95 | seccomp_export_bpf(ctx, fd) |
| 96 | scmp_filter_ctx ctx |
| 97 | FILE *fd |
| 98 | INTERFACE: |
| 99 | seccomp_export_bpf seccomp_export_pfc |
| 100 | C_ARGS: |
| 101 | ctx, fileno(fd) |
| 102 | POSTCALL: |
| 103 | die_check_errno; |
| 104 | |
| 105 | scmp_filter_ctx |
| 106 | seccomp_init(def_action) |
| 107 | U32 def_action |
| 108 | |
| 109 | int |
| 110 | seccomp_load(ctx) |
| 111 | scmp_filter_ctx ctx |
| 112 | |
| 113 | NO_OUTPUT int |
| 114 | seccomp_merge(ctx_dst, ctx_src) |
| 115 | scmp_filter_ctx ctx_dst |
| 116 | scmp_filter_ctx ctx_src |
| 117 | POSTCALL: |
| 118 | die_check_errno; |
| 119 | |
| 120 | void |
| 121 | seccomp_release(ctx) |
| 122 | scmp_filter_ctx ctx |
| 123 | |
| 124 | NO_OUTPUT int |
| 125 | seccomp_reset(ctx, def_action) |
| 126 | scmp_filter_ctx ctx |
| 127 | U32 def_action |
| 128 | POSTCALL: |
| 129 | die_check_errno; |
| 130 | |
| 131 | NO_OUTPUT int |
| 132 | seccomp_rule_add_array(ctx, action, syscall, args) |
| 133 | scmp_filter_ctx ctx |
| 134 | U32 action |
| 135 | int syscall |
| 136 | AV* args |
| 137 | PREINIT: |
| 138 | unsigned int arg_cnt, i; |
| 139 | struct scmp_arg_cmp *arg_array; |
| 140 | SV **sv; |
| 141 | char *intermediate; |
| 142 | INIT: |
| 143 | arg_cnt = av_len(args) + 1; |
| 144 | Newx(arg_array, arg_cnt, struct scmp_arg_cmp); |
| 145 | for(i = 0 ; i < arg_cnt ; i++){ |
| 146 | sv = av_fetch(args, i, 0); |
| 147 | if(sv == NULL) |
| 148 | croak("Bad input array (av_fetch returned NULL)"); |
| 149 | arg_array[i] = *((struct scmp_arg_cmp*) SvPV_nolen(*sv)); |
| 150 | } |
| 151 | C_ARGS: |
| 152 | ctx, action, syscall, arg_cnt, arg_array |
| 153 | INTERFACE: |
| 154 | seccomp_rule_add_array seccomp_rule_add_exact_array |
| 155 | POSTCALL: |
| 156 | Safefree(arg_array); |
| 157 | die_check_errno; |
| 158 | |
| 159 | |
| 160 | NO_OUTPUT int |
| 161 | seccomp_syscall_priority(ctx, syscall, priority) |
| 162 | scmp_filter_ctx ctx |
| 163 | int syscall |
| 164 | I8 priority |
| 165 | POSTCALL: |
| 166 | die_check_errno; |
| 167 | |
| 168 | int |
| 169 | seccomp_syscall_resolve_name(name) |
| 170 | const char *name |
| 171 | POSTCALL: |
| 172 | die_if_error; |
| 173 | |
| 174 | int |
| 175 | seccomp_syscall_resolve_name_arch(arch_token, name) |
| 176 | U32 arch_token |
| 177 | const char *name |
| 178 | POSTCALL: |
| 179 | die_if_error; |
| 180 | |
| 181 | int |
| 182 | seccomp_syscall_resolve_name_rewrite(arch_token, name) |
| 183 | U32 arch_token |
| 184 | const char *name |
| 185 | POSTCALL: |
| 186 | die_if_error; |
| 187 | |
| 188 | char * |
| 189 | seccomp_syscall_resolve_num_arch(arch_token, num) |
| 190 | U32 arch_token |
| 191 | int num |
| 192 | |
| 193 | AV* |
| 194 | seccomp_version() |
| 195 | PREINIT: |
| 196 | const struct scmp_version* ver; |
| 197 | CODE: |
| 198 | ver = seccomp_version(); |
| 199 | if(ver == NULL) |
| 200 | croak("seccomp_version() returned NULL"); |
| 201 | RETVAL = newAV(); |
| 202 | av_push(RETVAL, newSViv(ver->major)); |
| 203 | av_push(RETVAL, newSViv(ver->minor)); |
| 204 | av_push(RETVAL, newSViv(ver->micro)); |
| 205 | OUTPUT: |
| 206 | RETVAL |