diff options
| author | Warner Losh <imp@bsdimp.com> | 2021-08-03 13:39:31 -0600 |
|---|---|---|
| committer | Warner Losh <imp@bsdimp.com> | 2021-09-10 14:13:06 -0600 |
| commit | 01a298a57ed3cd1fefbe70c691d74247c8f84906 (patch) | |
| tree | 3322dcbd549d95b494c2497a12ef9ffa0cffc2fd | |
| parent | d1dc9ab3afd51f0a8d6a6b19edca3dd345deb32d (diff) | |
| download | qemu-01a298a57ed3cd1fefbe70c691d74247c8f84906.zip | |
bsd-user: save the path to the qemu emulator
Save the path to the qemu emulator. This will be used later when we have
a more complete implementation of exec.
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
| -rw-r--r-- | bsd-user/main.c | 21 | ||||
| -rw-r--r-- | bsd-user/qemu.h | 1 |
2 files changed, 22 insertions, 0 deletions
diff --git a/bsd-user/main.c b/bsd-user/main.c index 607fdd8380..d7c8a3e348 100644 --- a/bsd-user/main.c +++ b/bsd-user/main.c @@ -43,6 +43,8 @@ #include "host-os.h" +#include <sys/sysctl.h> + int singlestep; unsigned long mmap_min_addr; uintptr_t guest_base; @@ -52,6 +54,7 @@ unsigned long reserved_va; static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX; const char *qemu_uname_release; enum BSDType bsd_type; +char qemu_proc_pathname[PATH_MAX]; /* full path to exeutable */ /* * XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so @@ -336,6 +339,22 @@ void init_task_state(TaskState *ts) ts->sigqueue_table[i].next = NULL; } +static void save_proc_pathname(char *argv0) +{ + int mib[4]; + size_t len; + + mib[0] = CTL_KERN; + mib[1] = KERN_PROC; + mib[2] = KERN_PROC_PATHNAME; + mib[3] = -1; + + len = sizeof(qemu_proc_pathname); + if (sysctl(mib, 4, qemu_proc_pathname, &len, NULL, 0)) { + perror("sysctl"); + } +} + int main(int argc, char **argv) { const char *filename; @@ -360,6 +379,8 @@ int main(int argc, char **argv) usage(); } + save_proc_pathname(argv[0]); + error_init(argv[0]); module_call_init(MODULE_INIT_TRACE); qemu_init_cpu_list(); diff --git a/bsd-user/qemu.h b/bsd-user/qemu.h index cf248ad3df..6c4ec61d76 100644 --- a/bsd-user/qemu.h +++ b/bsd-user/qemu.h @@ -207,6 +207,7 @@ void mmap_fork_start(void); void mmap_fork_end(int child); /* main.c */ +extern char qemu_proc_pathname[]; extern unsigned long x86_stack_size; /* user access */ |