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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
View file

@ -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;

23
libc/zipos/stat-impl.c
View file

@ -16,9 +16,10 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/intrin/safemacros.internal.h"
#include "libc/calls/struct/stat.h"
#include "libc/intrin/safemacros.internal.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/s.h"
#include "libc/sysv/errfuns.h"
#include "libc/zip.h"
#include "libc/zipos/zipos.internal.h"
@ -27,14 +28,18 @@ int __zipos_stat_impl(struct Zipos *zipos, size_t cf, struct stat *st) {
size_t lf;
if (zipos && st) {
bzero(st, sizeof(*st));
lf = GetZipCfileOffset(zipos->map + cf);
st->st_mode = GetZipCfileMode(zipos->map + cf);
st->st_size = GetZipLfileUncompressedSize(zipos->map + lf);
st->st_blocks =
roundup(GetZipLfileCompressedSize(zipos->map + lf), 512) / 512;
GetZipCfileTimestamps(zipos->map + cf, &st->st_mtim, &st->st_atim,
&st->st_ctim, 0);
st->st_birthtim = st->st_ctim;
if (cf) {
lf = GetZipCfileOffset(zipos->map + cf);
st->st_mode = GetZipCfileMode(zipos->map + cf);
st->st_size = GetZipLfileUncompressedSize(zipos->map + lf);
st->st_blocks =
roundup(GetZipLfileCompressedSize(zipos->map + lf), 512) / 512;
GetZipCfileTimestamps(zipos->map + cf, &st->st_mtim, &st->st_atim,
&st->st_ctim, 0);
st->st_birthtim = st->st_ctim;
} else {
st->st_mode = 0444 | S_IFDIR | 0111;
}
return 0;
} else {
return einval();