fix handling of d_name in struct dirent

basically there are 3 choices for how to implement this variable-size
string member:
1. C99 flexible array member: breaks using dirent.h with pre-C99 compiler.
2. old way: length-1 string: generates array bounds warnings in caller.
3. new way: length-NAME_MAX string. no problems, simplifies all code.

of course the usable part in the pointer returned by readdir might be
shorter than NAME_MAX+1 bytes, but that is allowed by the standard and
doesn't hurt anything.

1 files changed, 3 insertions, 4 deletions

diff --git a/src/dirent/scandir.c b/src/dirent/scandir.c
index aad813ac..a85cfac1 100644
--- a/src/dirent/scandir.c
+++ b/src/dirent/scandir.c
@@ -12,7 +12,7 @@ int scandir(const char *path, struct dirent ***res,
 {
 	DIR *d = opendir(path);
 	struct dirent *de, **names=0, **tmp;
-	size_t cnt=0, len=0, size;
+	size_t cnt=0, len=0;
 	int old_errno = errno;
 
 	if (!d) return -1;
@@ -26,10 +26,9 @@ int scandir(const char *path, struct dirent ***res,
 			if (!tmp) break;
 			names = tmp;
 		}
-		size = offsetof(struct dirent,d_name) + strlen(de->d_name) + 1;
-		names[cnt] = malloc(size);
+		names[cnt] = malloc(de->d_reclen);
 		if (!names[cnt]) break;
-		memcpy(names[cnt++], de, size);
+		memcpy(names[cnt++], de, de->d_reclen);
 	}
 
 	closedir(d);