From c8ab9926132085f2daf6b949cafda43378d50fb5 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Wed, 28 Feb 2024 13:00:54 -0500
Subject: stat: Use errno_is_like(ENOSYS) for EPERM kludge
---
src/bfstd.c | 4 ++++
src/stat.c | 4 +---
2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/src/bfstd.c b/src/bfstd.c
index d19049f..ce4aa49 100644
--- a/src/bfstd.c
+++ b/src/bfstd.c
@@ -45,6 +45,10 @@ bool error_is_like(int error, int category) {
case ENOENT:
return error == ENOTDIR;
+ case ENOSYS:
+ // https://github.com/opencontainers/runc/issues/2151
+ return errno == EPERM;
+
#if __DragonFly__
// https://twitter.com/tavianator/status/1742991411203485713
case ENAMETOOLONG:
diff --git a/src/stat.c b/src/stat.c
index 36222cb..2f2743b 100644
--- a/src/stat.c
+++ b/src/stat.c
@@ -253,9 +253,7 @@ static int bfs_stat_explicit(int at_fd, const char *at_path, int at_flags, struc
if (load(&has_statx, relaxed)) {
int ret = bfs_statx_impl(at_fd, at_path, at_flags, buf);
- // EPERM is commonly returned in a seccomp() sandbox that does
- // not allow statx()
- if (ret != 0 && (errno == ENOSYS || errno == EPERM)) {
+ if (ret != 0 && errno_is_like(ENOSYS)) {
store(&has_statx, false, relaxed);
} else {
return ret;
--
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