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Explicitly set errno to ENOENT if err is not ERROR_DIRECTORY

PATCH Superseded Rose via GitGitGadget 3 participants 4 messages Dec 19, 2022 – Dec 20, 2022

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#0 lore raw

PATCH 1/1 Explicitly set errno to ENOENT if err is not ERROR_DIRECTORY

From: Seija Kijin <[email protected]>

At this point, the only two possible errors are
ERROR_DIRECTORY or ERROR_BAD_PATHNAME.

This code clarifies this and also saves a call to
err_win_to_posix.

---
Explicitly set errno to ENOENT if err is not ERROR_DIRECTORY

At this point, the only two possible errors are ERROR_DIRECTORY or ERROR_BAD_PATHNAME.

This code clarifies this and also saves a call to err_win_to_posix.

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1402%2FAtariDreams%2Fopendir-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1402/AtariDreams/opendir-v1
Pull-Request: https://github.com/git/git/pull/1402

 compat/win32/dirent.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
compat/win32/dirent.c +2 -2
index 52420ec7d4d..8f94a5ab6db 100644
@@ -34,13 +34,13 @@ DIR *opendir(const char *name)
 	if (len && !is_dir_sep(pattern[len - 1]))
 		pattern[len++] = '/';
 	pattern[len++] = '*';
-	pattern[len] = 0;
+	pattern[len] = '\0';
 
 	/* open find handle */
 	h = FindFirstFileW(pattern, &fdata);
 	if (h == INVALID_HANDLE_VALUE) {
 		DWORD err = GetLastError();
-		errno = (err == ERROR_DIRECTORY) ? ENOTDIR : err_win_to_posix(err);
+		errno = (err == ERROR_DIRECTORY) ? ENOTDIR : ENOENT;
 		return NULL;
 	}
 

base-commit: 7c2ef319c52c4997256f5807564523dfd4acdfc7

Signature · 1 line
gitgitgadget
#1 lore raw

PATCH v2 1/1 win32: explicitly set errno to enoent if err is not error_directory

From: Seija Kijin <[email protected]>

At this point, the only two possible errors are
ERROR_DIRECTORY or ERROR_BAD_PATHNAME.

This code clarifies this and also saves a call to
err_win_to_posix.

---
win32: explicitly set errno to enoent if err is not error_directory

At this point, the only two possible errors are ERROR_DIRECTORY or ERROR_BAD_PATHNAME.

This code clarifies this and also saves a call to err_win_to_posix.

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1402%2FAtariDreams%2Fopendir-v2
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1402/AtariDreams/opendir-v2
Pull-Request: https://github.com/git/git/pull/1402

Range-diff vs v1:

1: 6e66c0deaf9 ! 1: bf757aee0be Explicitly set errno to ENOENT if err is not ERROR_DIRECTORY
@@ Metadata
Author: Seija Kijin <[email protected]>

## Commit message ##
- Explicitly set errno to ENOENT if err is not ERROR_DIRECTORY
+ win32: explicitly set errno to enoent if err is not error_directory

At this point, the only two possible errors are ERROR_DIRECTORY or ERROR_BAD_PATHNAME.

 compat/win32/dirent.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
compat/win32/dirent.c +2 -2
index 52420ec7d4d..8f94a5ab6db 100644
@@ -34,13 +34,13 @@ DIR *opendir(const char *name)
 	if (len && !is_dir_sep(pattern[len - 1]))
 		pattern[len++] = '/';
 	pattern[len++] = '*';
-	pattern[len] = 0;
+	pattern[len] = '\0';
 
 	/* open find handle */
 	h = FindFirstFileW(pattern, &fdata);
 	if (h == INVALID_HANDLE_VALUE) {
 		DWORD err = GetLastError();
-		errno = (err == ERROR_DIRECTORY) ? ENOTDIR : err_win_to_posix(err);
+		errno = (err == ERROR_DIRECTORY) ? ENOTDIR : ENOENT;
 		return NULL;
 	}
 

base-commit: 7c2ef319c52c4997256f5807564523dfd4acdfc7

Signature · 1 line
gitgitgadget
#3 lore raw
In reply to Rose via GitGitGadget
Quoted 31 lines · Rose via GitGitGadget

From: Seija Kijin <[email protected]>

At this point, the only two possible errors are
ERROR_DIRECTORY or ERROR_BAD_PATHNAME.

This code clarifies this and also saves a call to
err_win_to_posix.

---
Explicitly set errno to ENOENT if err is not ERROR_DIRECTORY

At this point, the only two possible errors are ERROR_DIRECTORY or ERROR_BAD_PATHNAME.

This code clarifies this and also saves a call to err_win_to_posix.

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1402%2FAtariDreams%2Fopendir-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1402/AtariDreams/opendir-v1
Pull-Request: https://github.com/git/git/pull/1402

 compat/win32/dirent.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
compat/win32/dirent.c +0 -0
index 52420ec7d4d..8f94a5ab6db 100644

compat/win32/dirent.c DIR *opendir(const char *name) · line 37

Quoted 5 lines
compat/win32/dirent.c +1 -1
@@ -34,13 +34,13 @@ DIR *opendir(const char *name)
 	if (len && !is_dir_sep(pattern[len - 1]))
 		pattern[len++] = '/';
 	pattern[len++] = '*';
-	pattern[len] = 0;
+	pattern[len] = '\0';

Maybe the subject of this patch is a good change (I have no idea, and don't use Windows), but this just seems like unrelated general cleanup.

I think it's probably good to change these sorts cases from 0 to '\0', but let's do that as a seperate change...

#2 lore raw

Re: [PATCH v2] win32: explicitly set errno to enoent if err is not error_directory

In reply to Rose via GitGitGadget

Am 19.12.22 um 17:20 schrieb Rose via GitGitGadget:

Quoted 18 lines

From: Seija Kijin <[email protected]>

At this point, the only two possible errors are
ERROR_DIRECTORY or ERROR_BAD_PATHNAME.

This code clarifies this and also saves a call to
err_win_to_posix.

---

compat/win32/dirent.c +0 -0
index 52420ec7d4d..8f94a5ab6db 100644
@@ -34,13 +34,13 @@ DIR *opendir(const char *name)
 	if (len && !is_dir_sep(pattern[len - 1]))
 		pattern[len++] = '/';

compat/win32/dirent.c DIR *opendir(const char *name) · line 43

Quoted 10 lines
compat/win32/dirent.c +2 -2
 	pattern[len++] = '*';
-	pattern[len] = 0;
+	pattern[len] = '\0';
 
 	/* open find handle */
 	h = FindFirstFileW(pattern, &fdata);
 	if (h == INVALID_HANDLE_VALUE) {
 		DWORD err = GetLastError();
-		errno = (err == ERROR_DIRECTORY) ? ENOTDIR : err_win_to_posix(err);
+		errno = (err == ERROR_DIRECTORY) ? ENOTDIR : ENOENT;

This change does not look correct. The documentation of FindFirstFileW()[*] does not give any guarantees that ERROR_DIRECTORY and ERROR_BAD_PATHNAME are the only possible error values. It is certainly not unthinkable that a hardware error is reported as ERROR_IO_DEVICE and should be translated to EIO.

[*]
https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-findfirstfilew

-- Hannes