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[v3,04/12] tools/nolibc/dirent: avoid errno in readdir_r

Message ID 20250924142059.527768-5-benjamin@sipsolutions.net
State Changes Requested
Headers show
Series Start porting UML to nolibc | expand

Commit Message

Benjamin Berg Sept. 24, 2025, 2:20 p.m. UTC 
From: Benjamin Berg <benjamin.berg@intel.com>

Using errno is not possible when NOLIBC_IGNORE_ERRNO is set. Use
sys_lseek instead of lseek as that avoids using errno.

Fixes: 665fa8dea90d ("tools/nolibc: add support for directory access")
Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Acked-by: Thomas Weißschuh <linux@weissschuh.net>
---
 tools/include/nolibc/dirent.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
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Patch

diff --git a/tools/include/nolibc/dirent.h b/tools/include/nolibc/dirent.h
index 758b95c48e7a..61a122a60327 100644
--- a/tools/include/nolibc/dirent.h
+++ b/tools/include/nolibc/dirent.h
@@ -86,9 +86,9 @@  int readdir_r(DIR *dirp, struct dirent *entry, struct dirent **result)
 	 * readdir() can only return one entry at a time.
 	 * Make sure the non-returned ones are not skipped.
 	 */
-	ret = lseek(fd, ldir->d_off, SEEK_SET);
-	if (ret == -1)
-		return errno;
+	ret = sys_lseek(fd, ldir->d_off, SEEK_SET);
+	if (ret < 0)
+		return -ret;
 
 	entry->d_ino = ldir->d_ino;
 	/* the destination should always be big enough */