1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
8 #include <errno.h> /* errno */
9 #include <limits.h> /* PATH_MAX */
10 #include <libgen.h> /* basename et al */
11 #include <stdlib.h> /* NULL */
12 #include <string.h> /* strerror */
13 #include <unistd.h> /* readlink */
17 #include <rte_string_fns.h> /* strlcpy */
19 #ifdef RTE_EXEC_ENV_FREEBSD
20 #define self "curproc"
27 #ifdef RTE_LIBRTE_PDUMP
29 extern void *send_pkts(void *empty);
30 extern uint16_t flag_for_send_pkts;
34 * launches a second copy of the test process using the given argv parameters,
35 * which should include argv[0] as the process name. To identify in the
36 * subprocess the source of the call, the env_value parameter is set in the
37 * environment as $RTE_TEST
40 process_dup(const char *const argv[], int numargs, const char *env_value)
43 char *argv_cpy[numargs + 1];
46 #ifdef RTE_LIBRTE_PDUMP
54 /* make a copy of the arguments to be passed to exec */
55 for (i = 0; i < numargs; i++)
56 argv_cpy[i] = strdup(argv[i]);
60 #ifdef RTE_EXEC_ENV_LINUX
62 const char *procdir = "/proc/" self "/fd/";
63 struct dirent *dirent;
68 /* close all open file descriptors, check /proc/self/fd
69 * to only call close on open fds. Exclude fds 0, 1 and
72 dir = opendir(procdir);
74 rte_panic("Error opening %s: %s\n", procdir,
82 rte_panic("Error %d obtaining fd for dir %s: %s\n",
87 while ((dirent = readdir(dir)) != NULL) {
89 fd = strtol(dirent->d_name, &endptr, 10);
90 if (errno != 0 || endptr[0] != '\0') {
91 printf("Error converting name fd %d %s:\n",
96 if (fd == fdir || fd <= 2)
104 printf("Running binary with argv[]:");
105 for (i = 0; i < num; i++)
106 printf("'%s' ", argv_cpy[i]);
109 /* set the environment variable */
110 if (setenv(RECURSIVE_ENV_VAR, env_value, 1) != 0)
111 rte_panic("Cannot export environment variable\n");
113 strlcpy(path, "/proc/" self "/" exe, sizeof(path));
114 if (execv(path, argv_cpy) < 0) {
115 if (errno == ENOENT) {
116 printf("Could not find '%s', is procfs mounted?\n",
119 rte_panic("Cannot exec: %s\n", strerror(errno));
122 /* parent process does a wait */
123 #ifdef RTE_LIBRTE_PDUMP
124 if ((strcmp(env_value, "run_pdump_server_tests") == 0))
125 pthread_create(&thread, NULL, &send_pkts, NULL);
128 while (wait(&status) != pid)
130 #ifdef RTE_LIBRTE_PDUMP
131 if ((strcmp(env_value, "run_pdump_server_tests") == 0)) {
132 flag_for_send_pkts = 0;
133 pthread_join(thread, NULL);
139 /* FreeBSD doesn't support file prefixes, so force compile failures for any
140 * tests attempting to use this function on FreeBSD.
142 #ifdef RTE_EXEC_ENV_LINUX
144 get_current_prefix(char *prefix, int size)
146 char path[PATH_MAX] = {0};
147 char buf[PATH_MAX] = {0};
149 /* get file for config (fd is always 3) */
150 snprintf(path, sizeof(path), "/proc/self/fd/%d", 3);
152 /* return NULL on error */
153 if (readlink(path, buf, sizeof(buf)) == -1)
157 snprintf(prefix, size, "%s", basename(dirname(buf)));
163 #endif /* _PROCESS_H_ */