Use fetchstr for path in sys_exec

e5609838 · Silas Boyd-Wickizer · 4578b584 · e5609838
--- a/kernel/sysfile.cc
+++ b/kernel/sysfile.cc
@@ -12,6 +12,7 @@
 #include "cpu.hh"
 #include "net.hh"
 #include "kmtrace.hh"
+#include "sperf.hh"

 static bool
 getfile(int fd, sref<file> *f)
@@ -419,20 +420,17 @@ sys_chdir(const char *path)
 }

 long
-sys_exec(const char *path, u64 uargv)
+sys_exec(const char *upath, u64 uargv)
 {
+  ANON_REGION(__func__, &perfgroup);
  char *argv[MAXARG];
-  char pbuf[16];
+  char path[DIRSIZ+1];
  int i;
  u64 uarg;

-  if (fetchstr(pbuf, path, sizeof(pbuf)) < 0)
+  if (fetchstr(path, upath, sizeof(path)) < 0)
    return -1;

-  if(argcheckstr(path) < 0) {
-    return -1;
-  }
-
  mt_ascope ascope("%s(%s)", __func__, path);

  memset(argv, 0, sizeof(argv));