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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
28 #ifdef RTE_LIBRTE_RING_PMD
30 extern void *send_pkts(void *empty
);
31 extern uint16_t flag_for_send_pkts
;
36 * launches a second copy of the test process using the given argv parameters,
37 * which should include argv[0] as the process name. To identify in the
38 * subprocess the source of the call, the env_value parameter is set in the
39 * environment as $RTE_TEST
42 process_dup(const char *const argv
[], int numargs
, const char *env_value
)
45 char *argv_cpy
[numargs
+ 1];
48 #ifdef RTE_LIBRTE_PDUMP
49 #ifdef RTE_LIBRTE_RING_PMD
58 /* make a copy of the arguments to be passed to exec */
59 for (i
= 0; i
< numargs
; i
++)
60 argv_cpy
[i
] = strdup(argv
[i
]);
64 #ifdef RTE_EXEC_ENV_LINUX
66 const char *procdir
= "/proc/" self
"/fd/";
67 struct dirent
*dirent
;
72 /* close all open file descriptors, check /proc/self/fd
73 * to only call close on open fds. Exclude fds 0, 1 and
76 dir
= opendir(procdir
);
78 rte_panic("Error opening %s: %s\n", procdir
,
86 rte_panic("Error %d obtaining fd for dir %s: %s\n",
91 while ((dirent
= readdir(dir
)) != NULL
) {
93 fd
= strtol(dirent
->d_name
, &endptr
, 10);
94 if (errno
!= 0 || endptr
[0] != '\0') {
95 printf("Error converting name fd %d %s:\n",
100 if (fd
== fdir
|| fd
<= 2)
108 printf("Running binary with argv[]:");
109 for (i
= 0; i
< num
; i
++)
110 printf("'%s' ", argv_cpy
[i
]);
113 /* set the environment variable */
114 if (setenv(RECURSIVE_ENV_VAR
, env_value
, 1) != 0)
115 rte_panic("Cannot export environment variable\n");
117 strlcpy(path
, "/proc/" self
"/" exe
, sizeof(path
));
118 if (execv(path
, argv_cpy
) < 0) {
119 if (errno
== ENOENT
) {
120 printf("Could not find '%s', is procfs mounted?\n",
123 rte_panic("Cannot exec: %s\n", strerror(errno
));
126 /* parent process does a wait */
127 #ifdef RTE_LIBRTE_PDUMP
128 #ifdef RTE_LIBRTE_RING_PMD
129 if ((strcmp(env_value
, "run_pdump_server_tests") == 0))
130 pthread_create(&thread
, NULL
, &send_pkts
, NULL
);
134 while (wait(&status
) != pid
)
136 #ifdef RTE_LIBRTE_PDUMP
137 #ifdef RTE_LIBRTE_RING_PMD
138 if ((strcmp(env_value
, "run_pdump_server_tests") == 0)) {
139 flag_for_send_pkts
= 0;
140 pthread_join(thread
, NULL
);
147 /* FreeBSD doesn't support file prefixes, so force compile failures for any
148 * tests attempting to use this function on FreeBSD.
150 #ifdef RTE_EXEC_ENV_LINUX
152 get_current_prefix(char *prefix
, int size
)
154 char path
[PATH_MAX
] = {0};
155 char buf
[PATH_MAX
] = {0};
157 /* get file for config (fd is always 3) */
158 snprintf(path
, sizeof(path
), "/proc/self/fd/%d", 3);
160 /* return NULL on error */
161 if (readlink(path
, buf
, sizeof(buf
)) == -1)
165 snprintf(prefix
, size
, "%s", basename(dirname(buf
)));
171 #endif /* _PROCESS_H_ */