Small utility collection for dealing with file archives that have dependencies
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pkg-utils/main/cmd/pack/write_toc.c

83 lines
1.6 KiB

/* SPDX-License-Identifier: ISC */
#include "pack.h"
static int write_entry(pkg_writer_t *wr, image_entry_t *it)
{
toc_entry_t ent;
size_t len;
len = strlen(it->name);
memset(&ent, 0, sizeof(ent));
ent.mode = htole32(it->mode);
ent.uid = htole32(it->uid);
ent.gid = htole32(it->gid);
ent.path_length = htole16(len);
if (pkg_writer_write_payload(wr, &ent, sizeof(ent)))
return -1;
if (pkg_writer_write_payload(wr, it->name, len))
return -1;
switch (it->mode & S_IFMT) {
case S_IFREG: {
toc_file_extra_t file;
memset(&file, 0, sizeof(file));
file.size = htole64(it->data.file.size);
file.id = htole32(it->data.file.id);
if (pkg_writer_write_payload(wr, &file, sizeof(file)))
return -1;
break;
}
case S_IFLNK: {
toc_symlink_extra_t sym;
len = strlen(it->data.symlink.target);
memset(&sym, 0, sizeof(sym));
sym.target_length = htole16(len);
if (pkg_writer_write_payload(wr, &sym, sizeof(sym)))
return -1;
if (pkg_writer_write_payload(wr, it->data.symlink.target, len))
return -1;
break;
}
case S_IFDIR:
break;
case S_IFBLK:
case S_IFCHR: {
toc_device_extra_t dev;
dev.devno = htole64(it->data.device.devno);
if (pkg_writer_write_payload(wr, &dev, sizeof(dev)))
return -1;
break;
}
default:
assert(0);
}
return 0;
}
int write_toc(pkg_writer_t *wr, image_entry_t *list, compressor_t *cmp)
{
if (pkg_writer_start_record(wr, PKG_MAGIC_TOC, cmp))
return -1;
while (list != NULL) {
if (write_entry(wr, list))
return -1;
list = list->next;
}
return pkg_writer_end_record(wr);
}