1 // Tests involving 2 capability file descriptors.
3 #include <sys/socket.h>
8 #include "capsicum-test.h"
10 TEST(CapabilityPair, sendfile) {
11 int in_fd = open(TmpFile("cap_sendfile_in"), O_CREAT|O_RDWR, 0644);
12 EXPECT_OK(write(in_fd, "1234", 4));
13 // Output fd for sendfile must be a stream socket in FreeBSD.
15 EXPECT_OK(socketpair(AF_UNIX, SOCK_STREAM, 0, sock_fds));
18 cap_rights_init(&r_rs, CAP_READ, CAP_SEEK);
20 cap_rights_init(&r_ws, CAP_WRITE, CAP_SEEK);
22 int cap_in_ro = dup(in_fd);
24 EXPECT_OK(cap_rights_limit(cap_in_ro, &r_rs));
25 int cap_in_wo = dup(in_fd);
27 EXPECT_OK(cap_rights_limit(cap_in_wo, &r_ws));
28 int cap_out_ro = dup(sock_fds[0]);
29 EXPECT_OK(cap_out_ro);
30 EXPECT_OK(cap_rights_limit(cap_out_ro, &r_rs));
31 int cap_out_wo = dup(sock_fds[0]);
32 EXPECT_OK(cap_out_wo);
33 EXPECT_OK(cap_rights_limit(cap_out_wo, &r_ws));
36 EXPECT_NOTCAPABLE(sendfile_(cap_out_ro, cap_in_ro, &offset, 4));
37 EXPECT_NOTCAPABLE(sendfile_(cap_out_wo, cap_in_wo, &offset, 4));
38 EXPECT_OK(sendfile_(cap_out_wo, cap_in_ro, &offset, 4));
47 unlink(TmpFile("cap_sendfile_in"));
51 TEST(CapabilityPair, tee) {
53 EXPECT_OK(pipe2(pipe1_fds, O_NONBLOCK));
55 EXPECT_OK(pipe2(pipe2_fds, O_NONBLOCK));
57 // Put some data into pipe1.
58 unsigned char buffer[4] = {1, 2, 3, 4};
59 EXPECT_OK(write(pipe1_fds[1], buffer, 4));
62 cap_rights_init(&r_ro, CAP_READ);
64 cap_rights_init(&r_wo, CAP_WRITE);
66 cap_rights_init(&r_rw, CAP_READ, CAP_WRITE);
68 // Various attempts to tee into pipe2.
69 int cap_in_wo = dup(pipe1_fds[0]);
71 EXPECT_OK(cap_rights_limit(cap_in_wo, &r_wo));
72 int cap_in_rw = dup(pipe1_fds[0]);
74 EXPECT_OK(cap_rights_limit(cap_in_rw, &r_rw));
75 int cap_out_ro = dup(pipe2_fds[1]);
76 EXPECT_OK(cap_out_ro);
77 EXPECT_OK(cap_rights_limit(cap_out_ro, &r_ro));
78 int cap_out_rw = dup(pipe2_fds[1]);
79 EXPECT_OK(cap_out_rw);
80 EXPECT_OK(cap_rights_limit(cap_out_rw, &r_rw));
82 EXPECT_NOTCAPABLE(tee(cap_in_wo, cap_out_rw, 4, SPLICE_F_NONBLOCK));
83 EXPECT_NOTCAPABLE(tee(cap_in_rw, cap_out_ro, 4, SPLICE_F_NONBLOCK));
84 EXPECT_OK(tee(cap_in_rw, cap_out_rw, 4, SPLICE_F_NONBLOCK));
98 TEST(CapabilityPair, splice) {
100 EXPECT_OK(pipe2(pipe1_fds, O_NONBLOCK));
102 EXPECT_OK(pipe2(pipe2_fds, O_NONBLOCK));
104 // Put some data into pipe1.
105 unsigned char buffer[4] = {1, 2, 3, 4};
106 EXPECT_OK(write(pipe1_fds[1], buffer, 4));
109 cap_rights_init(&r_ro, CAP_READ);
111 cap_rights_init(&r_wo, CAP_WRITE);
113 cap_rights_init(&r_rs, CAP_READ, CAP_SEEK);
115 cap_rights_init(&r_ws, CAP_WRITE, CAP_SEEK);
117 // Various attempts to splice.
118 int cap_in_wo = dup(pipe1_fds[0]);
119 EXPECT_OK(cap_in_wo);
120 EXPECT_OK(cap_rights_limit(cap_in_wo, &r_wo));
121 int cap_in_ro = dup(pipe1_fds[0]);
122 EXPECT_OK(cap_in_ro);
123 EXPECT_OK(cap_rights_limit(cap_in_ro, &r_ro));
124 int cap_in_ro_seek = dup(pipe1_fds[0]);
125 EXPECT_OK(cap_in_ro_seek);
126 EXPECT_OK(cap_rights_limit(cap_in_ro_seek, &r_rs));
127 int cap_out_wo = dup(pipe2_fds[1]);
128 EXPECT_OK(cap_out_wo);
129 EXPECT_OK(cap_rights_limit(cap_out_wo, &r_wo));
130 int cap_out_ro = dup(pipe2_fds[1]);
131 EXPECT_OK(cap_out_ro);
132 EXPECT_OK(cap_rights_limit(cap_out_ro, &r_ro));
133 int cap_out_wo_seek = dup(pipe2_fds[1]);
134 EXPECT_OK(cap_out_wo_seek);
135 EXPECT_OK(cap_rights_limit(cap_out_wo_seek, &r_ws));
137 EXPECT_NOTCAPABLE(splice(cap_in_ro, NULL, cap_out_wo_seek, NULL, 4, SPLICE_F_NONBLOCK));
138 EXPECT_NOTCAPABLE(splice(cap_in_wo, NULL, cap_out_wo_seek, NULL, 4, SPLICE_F_NONBLOCK));
139 EXPECT_NOTCAPABLE(splice(cap_in_ro_seek, NULL, cap_out_ro, NULL, 4, SPLICE_F_NONBLOCK));
140 EXPECT_NOTCAPABLE(splice(cap_in_ro_seek, NULL, cap_out_wo, NULL, 4, SPLICE_F_NONBLOCK));
141 EXPECT_OK(splice(cap_in_ro_seek, NULL, cap_out_wo_seek, NULL, 4, SPLICE_F_NONBLOCK));
145 close(cap_in_ro_seek);
148 close(cap_out_wo_seek);
157 // Although it only involves a single file descriptor, test vmsplice(2) here too.
158 TEST(CapabilityPair, vmsplice) {
160 EXPECT_OK(pipe2(pipe_fds, O_NONBLOCK));
163 cap_rights_init(&r_ro, CAP_READ);
165 cap_rights_init(&r_rw, CAP_READ, CAP_WRITE);
167 int cap_ro = dup(pipe_fds[1]);
169 EXPECT_OK(cap_rights_limit(cap_ro, &r_ro));
170 int cap_rw = dup(pipe_fds[1]);
172 EXPECT_OK(cap_rights_limit(cap_rw, &r_rw));
174 unsigned char buffer[4] = {1, 2, 3, 4};
176 memset(&iov, 0, sizeof(iov));
177 iov.iov_base = buffer;
178 iov.iov_len = sizeof(buffer);
180 EXPECT_NOTCAPABLE(vmsplice(cap_ro, &iov, 1, SPLICE_F_NONBLOCK));
181 EXPECT_OK(vmsplice(cap_rw, &iov, 1, SPLICE_F_NONBLOCK));