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[PATCH v6 2/4] read-cache: move 'ce_mode_from_stat()' to 'read-cache.c'

From
Tian Yuchen <cat@malon.dev>
Date
Jul 16, 2026, 08:49 UTC
Message-ID
<20260716084941.1101918-3-cat@malon.dev>
In-Reply-To
<20260716084941.1101918-1-cat@malon.dev>

The ce_mode_from_stat() function is declared as a static inline function in 'read-cache.h'. As we want to migrate configuration variables, this helper function will need access to corresponding repository-specific configuration logic. Move the implementation to 'read-cache.c' to cleanly encapsulate its dependencies.

Note that the 'extern int trust_executable_bit, has_symlinks;' line is discarded because it's not necessary when the function lives in "read-cache.c".

At present, this change has no visible impact, but it is crucial for our future plans to pass in the repo context. Comment has been added whilst we are at it.

Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored-by: Ayush Chandekar <ayu.chandekar@gmail.com>
Mentored-by: Olamide Caleb Bello <belkid98@gmail.com>
Signed-off-by: Tian Yuchen <cat@malon.dev>
---
 read-cache.c | 20 ++++++++++++++++++++
 read-cache.h | 16 ++--------------
 2 files changed, 22 insertions(+), 14 deletions(-)
diff --git a/read-cache.c b/read-cache.c
index c44e4d128f..cb4f4878c8 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -202,6 +202,26 @@ void fill_stat_cache_info(struct index_state *istate, struct cache_entry *ce, st
 	}
 }
 
+/*
+ * Determine the appropriate index mode for a file based on its stat()
+ * information and the existing cache entry (if any).
+ *
+ * This function handles degradation for filesystems that lack
+ * symlink support or reliable executable bits.
+ */
+unsigned int ce_mode_from_stat(const struct cache_entry *ce, unsigned int mode)
+{
+	if (!has_symlinks && S_ISREG(mode) &&
+	    ce && S_ISLNK(ce->ce_mode))
+		return ce->ce_mode;
+	if (!trust_executable_bit && S_ISREG(mode)) {
+		if (ce && S_ISREG(ce->ce_mode))
+			return ce->ce_mode;
+		return create_ce_mode(0666);
+	}
+	return create_ce_mode(mode);
+}
+
 static unsigned int st_mode_from_ce(const struct cache_entry *ce)
 {
 	switch (ce->ce_mode & S_IFMT) {
diff --git a/read-cache.h b/read-cache.h
index 043da1f1aa..3c4af2faeb 100644
--- a/read-cache.h
+++ b/read-cache.h
@@ -5,20 +5,8 @@
 #include "object.h"
 #include "pathspec.h"
 
-static inline unsigned int ce_mode_from_stat(const struct cache_entry *ce,
-					     unsigned int mode)
-{
-	extern int trust_executable_bit, has_symlinks;
-	if (!has_symlinks && S_ISREG(mode) &&
-	    ce && S_ISLNK(ce->ce_mode))
-		return ce->ce_mode;
-	if (!trust_executable_bit && S_ISREG(mode)) {
-		if (ce && S_ISREG(ce->ce_mode))
-			return ce->ce_mode;
-		return create_ce_mode(0666);
-	}
-	return create_ce_mode(mode);
-}
+unsigned int ce_mode_from_stat(const struct cache_entry *ce,
+				unsigned int mode);
 
 static inline int ce_to_dtype(const struct cache_entry *ce)
 {
-- 
2.43.0
Previous: Tian YuchenNext: Junio C Hamano
Message 42 of 62 in “environment.c: migrate 'trust_executable_bit' into 'repo_config_values'”
  1. 0/4 environment.c: migrate 'trust_executable_bit' into 'repo_config_values'Tian Yuchen, May 30, 2026
  2. 2/4 read-cache: move 'ce_mode_from_stat()' to 'read-cache.c'Tian Yuchen, May 30, 2026
  3. Patrick SteinhardtJun 4, 2026
  4. Tian YuchenJun 10, 2026
  5. 3/4 environment: move 'trust_executable_bit' into repo_config_valuesTian Yuchen, May 30, 2026
  6. Christian CouderMay 30, 2026
  7. Junio C HamanoMay 30, 2026
  8. Tian YuchenJun 1, 2026
  9. Tian YuchenJun 1, 2026
  10. Junio C HamanoJun 9, 2026
  11. 4/4 read-cache: pass 'istate' to stat/mode helper functionsTian Yuchen, May 30, 2026
  12. Christian CouderMay 30, 2026
  13. 1/4 read-cache: remove redundant extern declarationsTian Yuchen, May 30, 2026
  14. 0/3 environment: migrate 'trust_executable_bit' into 'repo_config_values'Tian Yuchen, Jun 10, 2026
  15. 1/3 read-cache: remove redundant extern declarationsTian Yuchen, Jun 10, 2026
  16. 2/3 read-cache: move 'ce_mode_from_stat()' to 'read-cache.c'Tian Yuchen, Jun 10, 2026
  17. Christian CouderJun 12, 2026
  18. 3/3 environment: move trust_executable_bit into repo_config_valuesTian Yuchen, Jun 10, 2026
  19. Tian YuchenJun 11, 2026
  20. Christian CouderJun 12, 2026
  21. Junio C HamanoJun 12, 2026
  22. 0/3 environment: migrate 'trust_executable_bit' into 'repo_config_values'Tian Yuchen, Jun 12, 2026
  23. 2/3 read-cache: move 'ce_mode_from_stat()' to 'read-cache.c'Tian Yuchen, Jun 12, 2026
  24. 1/3 read-cache: remove redundant extern declarationsTian Yuchen, Jun 12, 2026
  25. 3/3 environment: move trust_executable_bit into repo_config_valuesTian Yuchen, Jun 12, 2026
  26. 0/3 environment: migrate 'trust_executable_bit' into 'repo_config_values'Tian Yuchen, Jun 19, 2026
  27. 1/3 read-cache: remove redundant extern declarationsTian Yuchen, Jun 19, 2026
  28. 2/3 read-cache: move 'ce_mode_from_stat()' to 'read-cache.c'Tian Yuchen, Jun 19, 2026
  29. 3/3 environment: move trust_executable_bit into repo_config_valuesTian Yuchen, Jun 19, 2026
  30. Junio C HamanoJun 29, 2026
  31. Tian YuchenJul 15, 2026
  32. 0/4 environment: migrate 'trust_executable_bit' and 'has_symlinks' into 'repo_config_values'Tian Yuchen, Jul 15, 2026
  33. 1/4 read-cache: remove redundant extern declarationsTian Yuchen, Jul 15, 2026
  34. 2/4 read-cache: move 'ce_mode_from_stat()' to 'read-cache.c'Tian Yuchen, Jul 15, 2026
  35. 3/4 environment: move trust_executable_bit into repo_config_valuesTian Yuchen, Jul 15, 2026
  36. 4/4 environment: move has_symlinks into repo_config_valuesTian Yuchen, Jul 15, 2026
  37. Christian CouderJul 15, 2026
  38. Junio C HamanoJul 15, 2026
  39. Junio C HamanoJul 15, 2026
  40. 0/4 environment: migrate 'trust_executable_bit' and 'has_symlinks' into 'repo_config_values'Tian Yuchen, Jul 16, 2026
  41. 1/4 read-cache: remove redundant extern declarationsTian Yuchen, Jul 16, 2026
  42. 2/4 read-cache: move 'ce_mode_from_stat()' to 'read-cache.c'Tian Yuchen, Jul 16, 2026
  43. Junio C HamanoJul 16, 2026
  44. 3/4 environment: move trust_executable_bit into repo_config_valuesTian Yuchen, Jul 16, 2026
  45. 4/4 environment: move has_symlinks into repo_config_valuesTian Yuchen, Jul 16, 2026
  46. Junio C HamanoJul 16, 2026
  47. 0/4 environment: migrate 'trust_executable_bit' and 'has_symlinks' into 'repo_config_values'Tian Yuchen, Jul 17, 2026
  48. 2/4 read-cache: pass 'repo' to 'ce_mode_from_stat()'Tian Yuchen, Jul 17, 2026
  49. SZEDER GáborJul 18, 2026
  50. Tian YuchenJul 20, 2026
  51. SZEDER GáborJul 20, 2026
  52. Tian YuchenJul 20, 2026
  53. 1/4 read-cache: remove redundant extern declarationsTian Yuchen, Jul 17, 2026
  54. 3/4 environment: move trust_executable_bit into repo_config_valuesTian Yuchen, Jul 17, 2026
  55. Junio C HamanoJul 17, 2026
  56. Tian YuchenJul 20, 2026
  57. 4/4 environment: move has_symlinks into repo_config_valuesTian Yuchen, Jul 17, 2026
  58. 0/4 environment: migrate 'trust_executable_bit' and 'has_symlinks' into 'repo_config_values'Tian Yuchen, Jul 20, 2026
  59. 1/4 read-cache: remove redundant extern declarationsTian Yuchen, Jul 20, 2026
  60. 2/4 read-cache: pass 'repo' to 'ce_mode_from_stat()'Tian Yuchen, Jul 20, 2026
  61. 3/4 environment: move trust_executable_bit into repo_config_valuesTian Yuchen, Jul 20, 2026
  62. 4/4 environment: move has_symlinks into repo_config_valuesTian Yuchen, Jul 20, 2026

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