Continue trying execution with "/bin/sh" for execlp and execvp

As Rick stated, this isn't a clean solution because argv can be
arbirtary long and overflow the stack.

I post it here in case you'd find it useful anyway.

1 files changed, 9 insertions, 1 deletions

diff --git a/src/process/execlp.c b/src/process/execlp.c
index 5eed886e..f6da398b 100644
--- a/src/process/execlp.c
+++ b/src/process/execlp.c
@@ -1,6 +1,9 @@
 #include <unistd.h>
+#include <errno.h>
 #include <stdarg.h>
 
+extern int __execsh(const char *, char *const []);
+
 int execlp(const char *file, const char *argv0, ...)
 {
 	int argc;
@@ -17,6 +20,11 @@ int execlp(const char *file, const char *argv0, ...)
 			argv[i] = va_arg(ap, char *);
 		argv[i] = NULL;
 		va_end(ap);
-		return execvp(file, argv);
+		execvp(file, argv);
+		if (errno == ENOEXEC) {
+			errno = 0;
+			return __execsh(file, argv);
+		}
+		return -1;
 	}
 }