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[Qemu-devel] [PATCH] linux-user: make binfmt flag O require P
From: |
Joakim Tjernlund |
Subject: |
[Qemu-devel] [PATCH] linux-user: make binfmt flag O require P |
Date: |
Mon, 14 Jul 2014 20:32:55 +0200 |
Qemu can autodetect if it is started from Linux binfmt loader
when binfmt flag O is on.
Use that and require binfmt flag P as well which will enable QEMU
to pass in correct argv0 to the application.
Signed-off-by: Joakim Tjernlund <address@hidden>
---
linux-user/main.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/linux-user/main.c b/linux-user/main.c
index 71a33c7..9736768 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -3829,6 +3829,18 @@ int main(int argc, char **argv, char **envp)
int ret;
int execfd;
+ execfd = qemu_getauxval(AT_EXECFD);
+ if (execfd > 0 ) {
+ if (argc < 3) {
+ fprintf(stderr, "%s: Please use me through binfmt with P flag\n",
+ argv[0]);
+ exit(1);
+ }
+ handle_arg_argv0(argv[2]); /* binfmt wrapper */
+ memmove(&argv[2], &argv[3], (argc-2)*sizeof(argv));
+ argc--;
+ }
+
module_call_init(MODULE_INIT_QOM);
if ((envlist = envlist_create()) == NULL) {
@@ -4003,7 +4015,6 @@ int main(int argc, char **argv, char **envp)
cpu->opaque = ts;
task_settid(ts);
- execfd = qemu_getauxval(AT_EXECFD);
if (execfd == 0) {
execfd = open(filename, O_RDONLY);
if (execfd < 0) {
--
1.8.5.5
- [Qemu-devel] [PATCH] linux-user: make binfmt flag O require P,
Joakim Tjernlund <=