diff options
| author | Michal Suchanek <msuchanek@suse.de> | 2018-03-28 15:15:17 +0200 |
|---|---|---|
| committer | Simon Horman <horms@verge.net.au> | 2018-03-30 10:44:52 +0200 |
| commit | b58d076a6ed3612840bd7d71c65aa45641d6165a (patch) | |
| tree | 5dd6e99d10766de5605c4fb594c81848bb489b5b | |
| parent | cb434cbe6f401037e448276bb12056d1fdc3dbfc (diff) | |
kexec: Add option to revert -s
The undocumented -s option selects KEXEC_FILE_LOAD syscall but there is
no option to select KEXEC_LOAD syscall. Add it so -s can be reverted.
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Signed-off-by: Simon Horman <horms@verge.net.au>
| -rw-r--r-- | kexec/kexec.c | 5 | ||||
| -rw-r--r-- | kexec/kexec.h | 4 |
2 files changed, 8 insertions, 1 deletions
diff --git a/kexec/kexec.c b/kexec/kexec.c index 68ae059..8768931 100644 --- a/kexec/kexec.c +++ b/kexec/kexec.c @@ -1005,6 +1005,8 @@ void usage(void) " preserve context)\n" " to original kernel.\n" " -s, --kexec-file-syscall Use file based syscall for kexec operation\n" + " -c, --kexec-syscall Use the kexec_load syscall for for compatibility\n" + " with systems that don't support -s (default)\n" " -d, --debug Enable debugging to help spot a failure.\n" " -S, --status Return 0 if the type (by default crash) is loaded.\n" "\n" @@ -1368,6 +1370,9 @@ int main(int argc, char *argv[]) case OPT_KEXEC_FILE_SYSCALL: do_kexec_file_syscall = 1; break; + case OPT_KEXEC_SYSCALL: + do_kexec_file_syscall = 0; + break; case OPT_STATUS: do_status = 1; break; diff --git a/kexec/kexec.h b/kexec/kexec.h index 26225d2..9fd0355 100644 --- a/kexec/kexec.h +++ b/kexec/kexec.h @@ -219,6 +219,7 @@ extern int file_types; #define OPT_TYPE 't' #define OPT_PANIC 'p' #define OPT_KEXEC_FILE_SYSCALL 's' +#define OPT_KEXEC_SYSCALL 'c' #define OPT_STATUS 'S' #define OPT_MEM_MIN 256 #define OPT_MEM_MAX 257 @@ -246,11 +247,12 @@ extern int file_types; { "mem-max", 1, 0, OPT_MEM_MAX }, \ { "reuseinitrd", 0, 0, OPT_REUSE_INITRD }, \ { "kexec-file-syscall", 0, 0, OPT_KEXEC_FILE_SYSCALL }, \ + { "kexec-syscall", 0, 0, OPT_KEXEC_SYSCALL }, \ { "debug", 0, 0, OPT_DEBUG }, \ { "status", 0, 0, OPT_STATUS }, \ { "print-ckr-size", 0, 0, OPT_PRINT_CKR_SIZE }, \ -#define KEXEC_OPT_STR "h?vdfxyluet:psS" +#define KEXEC_OPT_STR "h?vdfxyluet:pscS" extern void dbgprint_mem_range(const char *prefix, struct memory_range *mr, int nr_mr); extern void die(const char *fmt, ...) |