ref: 3b5a50f3bf1570e2b1ee329be64762cf1fc8a8f0
parent: 68e61c65494f36f4b35981914016276c62e2c574
author: Sigrid Solveig Haflínudóttir <ftrvxmtrx@gmail.com>
date: Sat Apr 2 07:35:03 EDT 2022
devcmd: fix perm "no-change" comparison on wstat
Since ulong is 32 bits in 64-bit builds, this would always result in changing perm:
devcmd.c:573:14: warning: result of comparison of constant 18446744073709551615 with expression of type 'p9_ulong' (aka 'unsigned int') is always true[-Wtautological-constant-out-of-range-compare]
if(d->mode != ~0UL)
Cast to ulong, so even if it becomes 64 bits, it should still work.
--- a/kern/devcmd.c
+++ b/kern/devcmd.c
@@ -570,7 +570,7 @@
error(Eperm);
if(!emptystr(d->uid))
kstrdup(&cv->owner, d->uid);
- if(d->mode != ~0UL)
+ if(d->mode != (ulong)~0UL)
cv->perm = d->mode & 0777;
poperror();
free(d);