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Improve zipos path handling (#579)

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This change adds opendir, readdir, and stat support for the /zip/ root,
as well as directories not explicitly encoded in the zip file.
This commit is contained in:
Gavin Hayes 2022-09-04 01:50:23 -04:00 • committed by GitHub
parent 494d74271b
commit 1ef955c33b
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 73 additions and 10 deletions
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15
libc/stdio/dirstream.c
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@ -326,6 +326,7 @@ static struct dirent *readdir_impl(DIR *dir) {
uint8_t *s, *p;
struct Zipos *zip;
struct dirent *ent;
struct dirent *lastent;
struct dirent_bsd *bsd;
struct dirent_netbsd *nbsd;
struct dirent_openbsd *obsd;
@ -351,6 +352,20 @@ static struct dirent *readdir_impl(DIR *dir) {
ent->d_type = S_ISDIR(mode) ? DT_DIR : DT_REG;
memcpy(ent->d_name, s, ent->d_reclen);
ent->d_name[ent->d_reclen] = 0;
} else {
lastent = (struct dirent *)dir->buf;
n = p - s;
n = MIN(n, 255);
if (!lastent->d_ino || (n != lastent->d_reclen) ||
memcmp(lastent->d_name, s, n)) {
ent = lastent;
ent->d_ino++;
ent->d_off = -1;
ent->d_reclen = n;
ent->d_type = DT_DIR;
memcpy(ent->d_name, s, ent->d_reclen);
ent->d_name[ent->d_reclen] = 0;
}
}
}
dir->zip.offset += ZIP_CFILE_HDRSIZE(zip->map + dir->zip.offset);