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ignore the errno EEXIST when symlink for /dev/fd & /dev/std*

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Signed-off-by: Lai Jiangshan <jiangshanlai@gmail.com>
This commit is contained in:
Lai Jiangshan
2016-09-26 17:51:49 +08:00
parent b2e7a0f631
commit db6f286244
1 changed files with 5 additions and 4 deletions
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src/container.c
+5 -4
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@@ -322,10 +322,11 @@ static int container_setup_mount(struct hyper_container *container)
return -1;
}
if (symlink("/proc/self/fd", "./dev/fd") < 0 ||
symlink("/proc/self/fd/0", "./dev/stdin") < 0 ||
symlink("/proc/self/fd/1", "./dev/stdout") < 0 ||
symlink("/proc/self/fd/2", "./dev/stderr") < 0) {
/* all containers share the same devtmpfs, so we need to ignore the errno EEXIST */
if ((symlink("/proc/self/fd", "./dev/fd") < 0 && errno != EEXIST) ||
(symlink("/proc/self/fd/0", "./dev/stdin") < 0 && errno != EEXIST) ||
(symlink("/proc/self/fd/1", "./dev/stdout") < 0 && errno != EEXIST) ||
(symlink("/proc/self/fd/2", "./dev/stderr") < 0 && errno != EEXIST)) {
perror("failed to symlink for /dev/fd, /dev/stdin, /dev/stdout or /dev/stderr");
return -1;
}