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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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10
libc/zipos/find.c
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@ -28,6 +28,9 @@
ssize_t __zipos_find(struct Zipos *zipos, const struct ZiposUri *name) {
const char *zname;
size_t i, n, c, znamesize;
if (!name->len) {
return 0;
}
c = GetZipCdirOffset(zipos->cdir);
n = GetZipCdirRecords(zipos->cdir);
for (i = 0; i < n; ++i, c += ZIP_CFILE_HDRSIZE(zipos->map + c)) {
@ -38,6 +41,13 @@ ssize_t __zipos_find(struct Zipos *zipos, const struct ZiposUri *name) {
(name->len + 1 == znamesize && !memcmp(name->path, zname, name->len) &&
zname[name->len] == '/')) {
return c;
} else if ((name->len < znamesize &&
!memcmp(name->path, zname, name->len) &&
zname[name->len - 1] == '/') ||
(name->len + 1 < znamesize &&
!memcmp(name->path, zname, name->len) &&
zname[name->len] == '/')) {
return 0;
}
}
return -1;