From a627ef40cd267c907cd9aeafe0dc863111bab9fd Mon Sep 17 00:00:00 2001 From: Etienne CHAMPETIER Date: Mon, 30 Nov 2015 23:09:26 +0000 Subject: [PATCH] ujail: split name (-n) and hostname (-h) options Signed-off-by: Etienne CHAMPETIER --- jail/jail.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/jail/jail.c b/jail/jail.c index 97ddaab..541363a 100644 --- a/jail/jail.c +++ b/jail/jail.c @@ -35,10 +35,11 @@ #include #define STACK_SIZE (1024 * 1024) -#define OPT_ARGS "S:C:n:r:w:d:psuloc" +#define OPT_ARGS "S:C:n:h:r:w:d:psuloc" static struct { char *name; + char *hostname; char **jail_argv; char *seccomp; char *capabilities; @@ -216,6 +217,7 @@ static void usage(void) fprintf(stderr, " -c\t\tset PR_SET_NO_NEW_PRIVS\n"); fprintf(stderr, " -n \tthe name of the jail\n"); fprintf(stderr, "namespace jail options:\n"); + fprintf(stderr, " -h \tchange the hostname of the jail\n"); fprintf(stderr, " -r \treadonly files that should be staged\n"); fprintf(stderr, " -w \twriteable files that should be staged\n"); fprintf(stderr, " -p\t\tjail has /proc\n"); @@ -255,8 +257,8 @@ static int exec_jail(void) static int spawn_jail(void *_notused) { - if (opts.name && sethostname(opts.name, strlen(opts.name))) { - ERROR("failed to sethostname: %s\n", strerror(errno)); + if (opts.hostname && sethostname(opts.hostname, strlen(opts.hostname))) { + ERROR("sethostname(%s) failed: %s\n", opts.hostname, strerror(errno)); } if (build_jail_fs()) { @@ -334,6 +336,9 @@ int main(int argc, char **argv) case 'n': opts.name = optarg; break; + case 'h': + opts.hostname = optarg; + break; case 'r': opts.namespace = 1; add_path_and_deps(optarg, 1, 0, 0); -- 2.30.2