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fix handling of d_name in struct dirent

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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.
This commit is contained in:
Rich Felker
2011-06-06 18:04:28 -04:00
parent 0dc99ac413
commit da88b16a22
3 changed files with 6 additions and 8 deletions
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5
src/regex/glob.c
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@ -53,8 +53,7 @@ static int append(struct match **tail, const char *name, size_t len, int mark)
static int match_in_dir(const char *d, const char *p, int flags, int (*errfunc)(const char *path, int err), struct match **tail)
{
DIR *dir;
long long de_buf[(sizeof(struct dirent) + NAME_MAX + sizeof(long long))/sizeof(long long)];
struct dirent *de;
struct dirent de_buf, *de;
char pat[strlen(p)+1];
char *p2;
size_t l = strlen(d);
@ -94,7 +93,7 @@ static int match_in_dir(const char *d, const char *p, int flags, int (*errfunc)(
closedir(dir);
return error;
}
while (!(error = readdir_r(dir, (void *)de_buf, &de)) && de) {
while (!(error = readdir_r(dir, &de_buf, &de)) && de) {
char namebuf[l+de->d_reclen+2], *name = namebuf;
if (!literal && fnmatch(p, de->d_name, fnm_flags))
continue;