Currently, if there is no procfs mounted, test application will
fail to run any multiprocess-related autotests (EAL flags etc.)
without a clear explanation as to why this happens.
Add a check specifically for that condition, as well as add a
general stringified error message to rte_panic.
Signed-off-by: Anatoly Burakov <anatoly.bura...@intel.com>
---
app/test/process.h | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/app/test/process.h b/app/test/process.h
index 513bc9420..128ce4121 100644
--- a/app/test/process.h
+++ b/app/test/process.h
@@ -5,12 +5,16 @@
#ifndef _PROCESS_H_
#define _PROCESS_H_
+#include <errno.h> /* errno */
#include <limits.h> /* PATH_MAX */
#include <libgen.h> /* basename et al */
#include <stdlib.h> /* NULL */
+#include <string.h> /* strerror */
#include <unistd.h> /* readlink */
#include <sys/wait.h>
+#include <rte_string_fns.h> /* strlcpy */
+
#ifdef RTE_EXEC_ENV_FREEBSD
#define self "curproc"
#define exe "file"
@@ -67,8 +71,15 @@ process_dup(const char *const argv[], int numargs, const
char *env_value)
/* set the environment variable */
if (setenv(RECURSIVE_ENV_VAR, env_value, 1) != 0)
rte_panic("Cannot export environment variable\n");
- if (execv("/proc/" self "/" exe, argv_cpy) < 0)
- rte_panic("Cannot exec\n");
+
+ strlcpy(path, "/proc/" self "/" exe, sizeof(path));
+ if (execv(path, argv_cpy) < 0) {
+ if (errno == ENOENT) {
+ printf("Could not find '%s', is procfs
mounted?\n",
+ path);
+ }
+ rte_panic("Cannot exec: %s\n", strerror(errno));
+ }
}
/* parent process does a wait */
#ifdef RTE_LIBRTE_PDUMP
--
2.17.1
