diff options
Diffstat (limited to 'linux-user/main.c')
| -rw-r--r-- | linux-user/main.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/linux-user/main.c b/linux-user/main.c index 4f4746dce8..f956afccab 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -26,6 +26,7 @@ #include <sys/syscall.h> #include <sys/resource.h> #include <sys/shm.h> +#include <linux/binfmts.h> #include "qapi/error.h" #include "qemu.h" @@ -49,6 +50,11 @@ #include "cpu_loop-common.h" #include "crypto/init.h" +#ifndef AT_FLAGS_PRESERVE_ARGV0 +#define AT_FLAGS_PRESERVE_ARGV0_BIT 0 +#define AT_FLAGS_PRESERVE_ARGV0 (1 << AT_FLAGS_PRESERVE_ARGV0_BIT) +#endif + char *exec_path; int singlestep; @@ -632,6 +638,7 @@ int main(int argc, char **argv, char **envp) int execfd; int log_mask; unsigned long max_reserved_va; + bool preserve_argv0; error_init(argv[0]); module_call_init(MODULE_INIT_TRACE); @@ -688,6 +695,9 @@ int main(int argc, char **argv, char **envp) init_qemu_uname_release(); + /* + * Manage binfmt-misc open-binary flag + */ execfd = qemu_getauxval(AT_EXECFD); if (execfd == 0) { execfd = open(exec_path, O_RDONLY); @@ -697,6 +707,20 @@ int main(int argc, char **argv, char **envp) } } + /* + * get binfmt_misc flags + */ + preserve_argv0 = !!(qemu_getauxval(AT_FLAGS) & AT_FLAGS_PRESERVE_ARGV0); + + /* + * Manage binfmt-misc preserve-arg[0] flag + * argv[optind] full path to the binary + * argv[optind + 1] original argv[0] + */ + if (optind + 1 < argc && preserve_argv0) { + optind++; + } + if (cpu_model == NULL) { cpu_model = cpu_get_model(get_elf_eflags(execfd)); } |