read-cache.h

#ifndef READ_CACHE_H
#define READ_CACHE_H

#include "read-cache-ll.h"
#include "object.h"
#include "pathspec.h"
#include "environment.h"

/*
 * 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.
 */
static inline unsigned int ce_mode_from_stat(struct repository *repo,
					     const struct cache_entry *ce,
					     unsigned int mode)
{
	if (S_ISREG(mode) && !repo_has_symlinks(repo) &&
	    ce && S_ISLNK(ce->ce_mode))
		return ce->ce_mode;
	if (S_ISREG(mode) && !repo_trust_executable_bit(repo)) {
		if (ce && S_ISREG(ce->ce_mode))
			return ce->ce_mode;
		return create_ce_mode(0666);
	}
	return create_ce_mode(mode);
}

static inline int ce_to_dtype(const struct cache_entry *ce)
{
	unsigned ce_mode = ntohl(ce->ce_mode);
	if (S_ISREG(ce_mode))
		return DT_REG;
	else if (S_ISDIR(ce_mode) || S_ISGITLINK(ce_mode))
		return DT_DIR;
	else if (S_ISLNK(ce_mode))
		return DT_LNK;
	else
		return DT_UNKNOWN;
}

static inline int ce_path_match(struct index_state *istate,
				const struct cache_entry *ce,
				const struct pathspec *pathspec,
				char *seen)
{
	return match_pathspec(istate, pathspec, ce->name, ce_namelen(ce), 0, seen,
			      S_ISDIR(ce->ce_mode) || S_ISGITLINK(ce->ce_mode));
}

#endif /* READ_CACHE_H */