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touch: fix diagnostic on macOS 26

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* src/touch.c (touch): Do not use open_errno == EEXIST for diagnostic
if file was a directory as macOS 26 sets it for open("/", O_CREAT, ...).
This commit is contained in:
Grisha Levit 2025-09-18 20:40:59 -04:00 committed by Collin Funk
parent d535ca4c06
commit d9ff4d9af2
1 changed files with 3 additions and 2 deletions
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src/touch.c
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@ -180,11 +180,12 @@ touch (char const *file)
would give a bogus diagnostic for e.g., 'touch /' (assuming we
don't own / or have write access). On Solaris 10 and probably
other systems, opening a directory like "." fails with EINVAL.
(On SunOS 4 it was EPERM but that's obsolete.) */
(On SunOS 4 it was EPERM but that's obsolete.) On macOS 26
opening "/" fails with EEXIST. */
struct stat st;
if (open_errno
&& ! (open_errno == EISDIR
|| (open_errno == EINVAL
|| ((open_errno == EINVAL || open_errno == EEXIST)
&& stat (file, &st) == 0 && S_ISDIR (st.st_mode))))
{
/* The wording of this diagnostic should cover at least two cases: