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strbuf_readlink(): support link targets that exceed PATH_MAX

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The `strbuf_readlink()` function refuses to read link targets that
exceed PATH_MAX (even if a sufficient size was specified by the caller).

As some platforms (*cough* Windows *cough*) support longer paths, remove
this restriction (similar to `strbuf_getcwd()`).

Signed-off-by: Karsten Blees <blees@dcon.de>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Karsten Blees 2025-12-16 15:33:48 +00:00 committed by Junio C Hamano
parent ac2339de65
commit 5f09f93726
1 changed files with 1 additions and 3 deletions
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4
strbuf.c
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@ -566,8 +566,6 @@ ssize_t strbuf_write(struct strbuf *sb, FILE *f)
return sb->len ? fwrite(sb->buf, 1, sb->len, f) : 0;
}
#define STRBUF_MAXLINK (2*PATH_MAX)
int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint)
{
size_t oldalloc = sb->alloc;
@ -575,7 +573,7 @@ int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint)
if (hint < 32)
hint = 32;
while (hint < STRBUF_MAXLINK) {
for (;;) {
ssize_t len;
strbuf_grow(sb, hint + 1);