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authorTimo Teras <timo.teras@iki.fi>2008-11-07 17:11:08 +0200
committerTimo Teras <timo.teras@iki.fi>2008-11-07 17:11:08 +0200
commitaef0f036f08f8949e4e2a5b84c9199ef8ec40595 (patch)
tree423ba9a4e5db4b8b38b6ccf2578c8c205ff7db4d
parent6967c28b96784d474e6c2f50b075895d89f9ce02 (diff)
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use zlib internally to decompress
-rw-r--r--TODO3
-rw-r--r--src/Makefile4
-rw-r--r--src/apk_archive.h21
-rw-r--r--src/apk_io.h38
-rw-r--r--src/apk_package.h3
-rw-r--r--src/archive.c241
-rw-r--r--src/database.c40
-rw-r--r--src/gunzip.c93
-rw-r--r--src/io.c221
-rw-r--r--src/package.c27
10 files changed, 469 insertions, 222 deletions
diff --git a/TODO b/TODO
index 9ee75c7..9fdccef 100644
--- a/TODO
+++ b/TODO
@@ -1,5 +1,4 @@
-- Internal gunzip (via lib) to speed up stuff, and avoid threads
- - mmap() if possible for reading
+- mmapped block stream from file
- Index/pkginfo reader: same field multiple times -> memleak
diff --git a/src/Makefile b/src/Makefile
index 15eeb00..62041c2 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -15,6 +15,8 @@ apk_OBJS = \
package.o \
archive.o \
version.o \
+ io.o \
+ gunzip.o \
blob.o \
hash.o \
md5.o \
@@ -30,7 +32,7 @@ ALL_OBJS = $(apk_OBJS)
all: $(TARGETS)
apk: $(apk_OBJS)
- $(CC) $(LDFLAGS) -o $@ $^ $(LIBS)
+ $(CC) $(LDFLAGS) -o $@ $^ $(LIBS) /usr/lib/libz.a
clean::
@rm -f $(TARGETS) $(ALL_OBJS)
diff --git a/src/apk_archive.h b/src/apk_archive.h
index 2e8d274..b51aee5 100644
--- a/src/apk_archive.h
+++ b/src/apk_archive.h
@@ -13,8 +13,8 @@
#define APK_ARCHIVE
#include <sys/types.h>
-#include <pthread.h>
#include "apk_blob.h"
+#include "apk_io.h"
struct apk_archive_entry {
char *name;
@@ -27,16 +27,19 @@ struct apk_archive_entry {
mode_t mode;
time_t mtime;
dev_t device;
- int read_fd;
};
-typedef int (*apk_archive_entry_parser)(struct apk_archive_entry *entry, void *ctx);
+typedef int (*apk_archive_entry_parser)(void *ctx,
+ const struct apk_archive_entry *ae,
+ struct apk_istream *istream);
-pid_t apk_open_gz(int *fd);
-int apk_parse_tar(int fd, apk_archive_entry_parser parser, void *ctx);
-int apk_parse_tar_gz(int fd, apk_archive_entry_parser parser, void *ctx);
-apk_blob_t apk_archive_entry_read(struct apk_archive_entry *ae);
-int apk_archive_entry_extract(struct apk_archive_entry *ae, const char *to);
-pthread_t apk_checksum_and_tee(int *fd, void *ptr);
+struct apk_istream *apk_gunzip_bstream(struct apk_bstream *);
+
+int apk_parse_tar(struct apk_istream *, apk_archive_entry_parser parser, void *ctx);
+int apk_parse_tar_gz(struct apk_bstream *, apk_archive_entry_parser parser, void *ctx);
+
+int apk_archive_entry_extract(const struct apk_archive_entry *ae,
+ struct apk_istream *is,
+ const char *to);
#endif
diff --git a/src/apk_io.h b/src/apk_io.h
new file mode 100644
index 0000000..a0ceac2
--- /dev/null
+++ b/src/apk_io.h
@@ -0,0 +1,38 @@
+/* apk_io.h - Alpine Package Keeper (APK)
+ *
+ * Copyright (C) 2008 Timo Teräs <timo.teras@iki.fi>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation. See http://www.gnu.org/ for details.
+ */
+
+#ifndef APK_IO
+#define APK_IO
+
+#include "apk_defines.h"
+#include "apk_blob.h"
+
+struct apk_istream {
+ size_t (*read)(void *stream, void *ptr, size_t size);
+ size_t (*splice)(void *stream, int fd, size_t size);
+ void (*close)(void *stream);
+};
+
+struct apk_bstream {
+ size_t (*read)(void *stream, void **ptr);
+ void (*close)(void *stream, csum_t csum);
+};
+
+struct apk_istream *apk_istream_from_fd(int fd);
+struct apk_istream *apk_istream_from_file(const char *file);
+size_t apk_istream_skip(struct apk_istream *istream, size_t size);
+size_t apk_istream_splice(void *stream, int fd, size_t size);
+
+struct apk_bstream *apk_bstream_from_istream(struct apk_istream *istream);
+struct apk_bstream *apk_bstream_from_fd(int fd);
+
+apk_blob_t apk_blob_from_istream(struct apk_istream *istream, size_t size);
+
+#endif
diff --git a/src/apk_package.h b/src/apk_package.h
index 68e63e1..6f13e94 100644
--- a/src/apk_package.h
+++ b/src/apk_package.h
@@ -14,6 +14,7 @@
#include "apk_version.h"
#include "apk_hash.h"
+#include "apk_io.h"
struct apk_database;
struct apk_name;
@@ -75,7 +76,7 @@ struct apk_package *apk_pkg_read(struct apk_database *db, const char *name);
void apk_pkg_free(struct apk_package *pkg);
int apk_pkg_get_state(struct apk_package *pkg);
-int apk_pkg_add_script(struct apk_package *pkg, int fd,
+int apk_pkg_add_script(struct apk_package *pkg, struct apk_istream *is,
unsigned int type, unsigned int size);
int apk_pkg_run_script(struct apk_package *pkg, int root_fd,
unsigned int type);
diff --git a/src/archive.c b/src/archive.c
index 6de998b..33e3428 100644
--- a/src/archive.c
+++ b/src/archive.c
@@ -47,75 +47,62 @@ struct tar_header {
char padding[12]; /* 500-512 */
};
-static int get_dev_null(void)
-{
- static int fd_null = 0;
+#define GET_OCTAL(s) apk_blob_uint(APK_BLOB_PTR_LEN(s, sizeof(s)), 8)
- if (fd_null == 0) {
- fd_null = open("/dev/null", O_WRONLY);
- if (fd_null < 0)
- err(EX_OSFILE, "/dev/null");
- }
- return fd_null;
-}
+struct apk_tar_entry_istream {
+ struct apk_istream is;
+ struct apk_istream *tar_is;
+ size_t bytes_left;
+};
-pid_t apk_open_gz(int *fd)
+static size_t tar_entry_read(void *stream, void *ptr, size_t size)
{
- int pipe_fd[2];
- pid_t child_pid;
-
- if (pipe(pipe_fd) < 0)
- err(EX_OSERR, "pipe");
-
- child_pid = fork();
- if (child_pid < 0)
- err(EX_OSERR, "fork");
-
- if (child_pid == 0) {
- close(pipe_fd[0]);
- dup2(pipe_fd[1], STDOUT_FILENO);
- dup2(*fd, STDIN_FILENO);
- dup2(get_dev_null(), STDERR_FILENO);
- close(pipe_fd[1]);
- execl(GUNZIP_BINARY, "gunzip", "-c", NULL);
- err(EX_UNAVAILABLE, GUNZIP_BINARY);
- }
-
- close(pipe_fd[1]);
- *fd = pipe_fd[0];
-
- return child_pid;
+ struct apk_tar_entry_istream *teis =
+ container_of(stream, struct apk_tar_entry_istream, is);
+
+ if (size > teis->bytes_left)
+ size = teis->bytes_left;
+ size = teis->tar_is->read(teis->tar_is, ptr, size);
+ if (size >= 0)
+ teis->bytes_left -= size;
+ return size;
}
-#define GET_OCTAL(s) apk_blob_uint(APK_BLOB_PTR_LEN(s, sizeof(s)), 8)
-
-static int do_splice(int from_fd, int to_fd, int len)
+static size_t tar_entry_splice(void *stream, int fd, size_t size)
{
- int i = 0, r;
-
- while (i != len) {
- r = splice(from_fd, NULL, to_fd, NULL, len - i, SPLICE_F_MOVE);
- if (r == -1)
- return i;
- i += r;
- }
-
- return i;
+ struct apk_tar_entry_istream *teis =
+ container_of(stream, struct apk_tar_entry_istream, is);
+
+ if (size > teis->bytes_left)
+ size = teis->bytes_left;
+ size = teis->tar_is->splice(teis->tar_is, fd, size);
+ if (size >= 0)
+ teis->bytes_left -= size;
+ return size;
}
-int apk_parse_tar(int fd, apk_archive_entry_parser parser, void *ctx)
+int apk_parse_tar(struct apk_istream *is, apk_archive_entry_parser parser,
+ void *ctx)
{
+ struct apk_tar_entry_istream teis = {
+ .is.read = tar_entry_read,
+ .is.splice = tar_entry_splice,
+ .tar_is = is,
+ };
struct apk_archive_entry entry;
struct tar_header buf;
unsigned long offset = 0;
int end = 0, r;
+ size_t toskip;
memset(&entry, 0, sizeof(entry));
- while (read(fd, &buf, 512) == 512) {
+ while ((r = is->read(is, &buf, 512)) == 512) {
offset += 512;
if (buf.name[0] == '\0') {
- if (end)
+ if (end) {
+ r = 0;
break;
+ }
end++;
continue;
}
@@ -131,7 +118,6 @@ int apk_parse_tar(int fd, apk_archive_entry_parser parser, void *ctx)
.gname = buf.gname,
.device = makedev(GET_OCTAL(buf.devmajor),
GET_OCTAL(buf.devminor)),
- .read_fd = fd,
};
switch (buf.typeflag) {
@@ -139,7 +125,7 @@ int apk_parse_tar(int fd, apk_archive_entry_parser parser, void *ctx)
if (entry.name != NULL)
free(entry.name);
entry.name = malloc(entry.size+1);
- read(fd, entry.name, entry.size);
+ is->read(is, entry.name, entry.size);
offset += entry.size;
entry.size = 0;
break;
@@ -168,74 +154,48 @@ int apk_parse_tar(int fd, apk_archive_entry_parser parser, void *ctx)
break;
}
+ teis.bytes_left = entry.size;
if (entry.mode & S_IFMT) {
if (entry.name == NULL)
entry.name = strdup(buf.name);
/* callback parser function */
- offset += entry.size;
- r = parser(&entry, ctx);
+ r = parser(ctx, &entry, &teis.is);
if (r != 0)
return r;
- offset -= entry.size;
free(entry.name);
entry.name = NULL;
}
- if (entry.size)
- offset += do_splice(fd, get_dev_null(), entry.size);
+ offset += entry.size - teis.bytes_left;
+ toskip = teis.bytes_left;
+ if ((offset + toskip) & 511)
+ toskip += 512 - ((offset + toskip) & 511);
+ offset += toskip;
+ if (toskip != 0)
+ is->read(is, NULL, toskip);
+ }
- /* align to next 512 block */
- if (offset & 511)
- offset += do_splice(fd, get_dev_null(),
- 512 - (offset & 511));
+ if (r != 0) {
+ apk_error("Bad TAR header (r=%d)", r);
+ return -1;
}
return 0;
}
-int apk_parse_tar_gz(int fd, apk_archive_entry_parser parser, void *ctx)
-{
- pid_t pid;
- int r, status;
-
- pid = apk_open_gz(&fd);
- if (pid < 0)
- return pid;
-
- r = apk_parse_tar(fd, parser, ctx);
- close(fd);
- waitpid(pid, &status, 0);
-
- return r;
-}
-
-apk_blob_t apk_archive_entry_read(struct apk_archive_entry *ae)
+int apk_parse_tar_gz(struct apk_bstream *bs, apk_archive_entry_parser parser,
+ void *ctx)
{
- char *str;
- int pos = 0;
- ssize_t r;
-
- str = malloc(ae->size + 1);
- pos = 0;
- while (ae->size) {
- r = read(ae->read_fd, &str[pos], ae->size);
- if (r < 0) {
- free(str);
- return APK_BLOB_NULL;
- }
- pos += r;
- ae->size -= r;
- }
- str[pos] = 0;
-
- return APK_BLOB_PTR_LEN(str, pos+1);
+ return apk_parse_tar(apk_gunzip_bstream(bs), parser, ctx);
}
-int apk_archive_entry_extract(struct apk_archive_entry *ae, const char *fn)
+int apk_archive_entry_extract(const struct apk_archive_entry *ae,
+ struct apk_istream *is,
+ const char *fn)
{
- int r = -1;
+ int r = -1, fd;
if (fn == NULL)
fn = ae->name;
@@ -251,12 +211,14 @@ int apk_archive_entry_extract(struct apk_archive_entry *ae, const char *fn)
break;
case S_IFREG:
if (ae->link_target == NULL) {
- r = open(fn, O_WRONLY | O_CREAT, ae->mode & 07777);
- if (r < 0)
+ fd = open(fn, O_WRONLY | O_CREAT, ae->mode & 07777);
+ if (fd < 0) {
+ r = -1;
break;
- ae->size -= do_splice(ae->read_fd, r, ae->size);
- close(r);
- r = ae->size ? -1 : 0;
+ }
+ if (is->splice(is, fd, ae->size) == ae->size)
+ r = 0;
+ close(fd);
} else {
r = link(ae->link_target, fn);
}
@@ -284,74 +246,3 @@ int apk_archive_entry_extract(struct apk_archive_entry *ae, const char *fn)
}
return r;
}
-
-struct checksum_and_tee {
- int in_fd, tee_fd;
- void *ptr;
-};
-
-static void *__apk_checksum_and_tee(void *arg)
-{
- struct checksum_and_tee *args = (struct checksum_and_tee *) arg;
- char buf[2*1024];
- int r, w, wt;
- __off64_t offset;
- csum_ctx_t ctx;
- int dosplice = 1;
-
- offset = lseek(args->in_fd, 0, SEEK_CUR);
- csum_init(&ctx);
- do {
- r = read(args->in_fd, buf, sizeof(buf));
- if (r <= 0)
- break;
-
- wt = 0;
- do {
- if (dosplice) {
- w = splice(args->in_fd, &offset, args->tee_fd, NULL,
- r - wt, SPLICE_F_MOVE);
- if (w < 0) {
- dosplice = 0;
- continue;
- }
- } else {
- w = write(args->tee_fd, &buf[wt], r - wt);
- if (w < 0)
- break;
- }
- wt += w;
- } while (wt != r);
-
- csum_process(&ctx, buf, r);
- } while (r == sizeof(buf));
-
- csum_finish(&ctx, args->ptr);
- close(args->tee_fd);
- close(args->in_fd);
- free(args);
-
- return NULL;
-}
-
-pthread_t apk_checksum_and_tee(int *fd, void *ptr)
-{
- struct checksum_and_tee *args;
- int fds[2];
- pthread_t tid;
-
- if (pipe(fds) < 0)
- return -1;
-
- fcntl(fds[0], F_SETFD, FD_CLOEXEC);
- fcntl(fds[1], F_SETFD, FD_CLOEXEC);
-
- args = malloc(sizeof(*args));
- *args = (struct checksum_and_tee){ *fd, fds[1], ptr };
- if (pthread_create(&tid, NULL, __apk_checksum_and_tee, args) < 0)
- return -1;
-
- *fd = fds[0];
- return tid;
-}
-
diff --git a/src/database.c b/src/database.c
index a2caa53..a1c0300 100644
--- a/src/database.c
+++ b/src/database.c
@@ -376,14 +376,14 @@ static int apk_db_write_scriptdb(struct apk_database *db, int fd)
return 0;
}
-static int apk_db_read_scriptdb(struct apk_database *db, int fd)
+static int apk_db_read_scriptdb(struct apk_database *db, struct apk_istream *is)
{
struct apk_package *pkg;
struct apk_script_header hdr;
- while (read(fd, &hdr, sizeof(hdr)) == sizeof(hdr)) {
+ while (is->read(is, &hdr, sizeof(hdr)) == sizeof(hdr)) {
pkg = apk_db_get_pkg(db, hdr.csum);
- apk_pkg_add_script(pkg, fd, hdr.type, hdr.size);
+ apk_pkg_add_script(pkg, is, hdr.type, hdr.size);
}
return 0;
@@ -416,6 +416,7 @@ int apk_db_create(const char *root)
static int apk_db_read_config(struct apk_database *db)
{
+ struct apk_istream *is;
struct stat st;
char *buf;
int fd;
@@ -452,10 +453,10 @@ static int apk_db_read_config(struct apk_database *db)
close(fd);
}
- fd = open("var/lib/apk/scripts", O_RDONLY);
- if (fd >= 0) {
- apk_db_read_scriptdb(db, fd);
- close(fd);
+ is = apk_istream_from_file("var/lib/apk/scripts");
+ if (is != NULL) {
+ apk_db_read_scriptdb(db, is);
+ is->close(is);
}
return 0;
@@ -664,9 +665,11 @@ int apk_db_recalculate_and_commit(struct apk_database *db)
return r;
}
-static int apk_db_install_archive_entry(struct apk_archive_entry *ae,
- struct install_ctx *ctx)
+static int apk_db_install_archive_entry(void *_ctx,
+ const struct apk_archive_entry *ae,
+ struct apk_istream *is)
{
+ struct install_ctx *ctx = (struct install_ctx *) _ctx;
struct apk_database *db = ctx->db;
struct apk_package *pkg = ctx->pkg;
apk_blob_t name = APK_BLOB_STR(ae->name);
@@ -698,8 +701,7 @@ static int apk_db_install_archive_entry(struct apk_archive_entry *ae,
/* Handle script */
if (type != APK_SCRIPT_INVALID) {
- ae->size -= apk_pkg_add_script(pkg, ae->read_fd,
- type, ae->size);
+ apk_pkg_add_script(pkg, is, type, ae->size);
if (type == APK_SCRIPT_GENERIC ||
type == ctx->script) {
@@ -736,7 +738,7 @@ static int apk_db_install_archive_entry(struct apk_archive_entry *ae,
if (strncmp(file->filename, ".keep_", 6) == 0)
return 0;
- r = apk_archive_entry_extract(ae, NULL);
+ r = apk_archive_entry_extract(ae, is, NULL);
} else {
if (name.ptr[name.len-1] == '/')
name.len--;
@@ -775,10 +777,10 @@ int apk_db_install_pkg(struct apk_database *db,
struct apk_package *oldpkg,
struct apk_package *newpkg)
{
+ struct apk_bstream *bs;
struct install_ctx ctx;
csum_t csum;
char file[256];
- pthread_t tid = 0;
int fd, r;
if (fchdir(db->root_fd) < 0)
@@ -813,8 +815,8 @@ int apk_db_install_pkg(struct apk_database *db,
fcntl(fd, F_SETFD, FD_CLOEXEC);
- tid = apk_checksum_and_tee(&fd, csum);
- if (tid < 0)
+ bs = apk_bstream_from_fd(fd);
+ if (bs == NULL)
goto err_close;
ctx = (struct install_ctx) {
@@ -823,12 +825,10 @@ int apk_db_install_pkg(struct apk_database *db,
.script = (oldpkg == NULL) ?
APK_SCRIPT_PRE_INSTALL : APK_SCRIPT_PRE_UPGRADE,
};
- if (apk_parse_tar_gz(fd, (apk_archive_entry_parser)
- apk_db_install_archive_entry, &ctx) != 0)
+ if (apk_parse_tar_gz(bs, apk_db_install_archive_entry, &ctx) != 0)
goto err_close;
- pthread_join(tid, NULL);
- close(fd);
+ bs->close(bs, csum);
db->installed.stats.packages++;
hlist_add_head(&newpkg->installed_pkgs_list, &db->installed.packages);
@@ -850,7 +850,5 @@ int apk_db_install_pkg(struct apk_database *db,
err_close:
close(fd);
- if (tid != 0)
- pthread_join(tid, NULL);
return -1;
}
diff --git a/src/gunzip.c b/src/gunzip.c
new file mode 100644
index 0000000..f488fa4
--- /dev/null
+++ b/src/gunzip.c
@@ -0,0 +1,93 @@
+/* gunzip.c - Alpine Package Keeper (APK)
+ *
+ * Copyright (C) 2008 Timo Teräs <timo.teras@iki.fi>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation. See http://www.gnu.org/ for details.
+ */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <malloc.h>
+#include <zlib.h>
+
+#include "apk_defines.h"
+#include "apk_io.h"
+
+struct apk_gzip_istream {
+ struct apk_istream is;
+ struct apk_bstream *bs;
+ z_stream zs;
+ int z_err;
+};
+
+static size_t gz_read(void *stream, void *ptr, size_t size)
+{
+ struct apk_gzip_istream *gis =
+ container_of(stream, struct apk_gzip_istream, is);
+
+ if (gis->z_err == Z_DATA_ERROR || gis->z_err == Z_ERRNO)
+ return -1;
+ if (gis->z_err == Z_STREAM_END)
+ return 0;
+
+ if (ptr == NULL)
+ return apk_istream_skip(&gis->is, size);
+
+ gis->zs.avail_out = size;
+ gis->zs.next_out = ptr;
+
+ while (gis->zs.avail_out != 0 && gis->z_err == Z_OK) {
+ if (gis->zs.avail_in == 0) {
+ gis->zs.avail_in = gis->bs->read(gis->bs, (void **) &gis->zs.next_in);
+ if (gis->zs.avail_in < 0) {
+ gis->z_err = Z_DATA_ERROR;
+ return size - gis->zs.avail_out;
+ }
+ }
+
+ gis->z_err = inflate(&gis->zs, Z_NO_FLUSH);
+ }
+
+ if (gis->z_err != Z_OK && gis->z_err != Z_STREAM_END)
+ return -1;
+
+ return size - gis->zs.avail_out;
+}
+
+static void gz_close(void *stream)
+{
+ struct apk_gzip_istream *gis =
+ container_of(stream, struct apk_gzip_istream, is);
+
+ inflateEnd(&gis->zs);
+ free(gis);
+}
+
+struct apk_istream *apk_gunzip_bstream(struct apk_bstream *bs)
+{
+ struct apk_gzip_istream *gis;
+
+ gis = malloc(sizeof(struct apk_gzip_istream));
+ if (gis == NULL)
+ return NULL;
+
+ *gis = (struct apk_gzip_istream) {
+ .is.read = gz_read,
+ .is.splice = apk_istream_splice,
+ .is.close = gz_close,
+ .bs = bs,
+ .z_err = 0,
+ };
+
+ if (inflateInit2(&gis->zs, 15+32) != Z_OK) {
+ free(gis);
+ return NULL;
+ }
+
+ return &gis->is;
+}
+
diff --git a/src/io.c b/src/io.c
new file mode 100644
index 0000000..38a1b07
--- /dev/null
+++ b/src/io.c
@@ -0,0 +1,221 @@
+/* io.c - Alpine Package Keeper (APK)
+ *
+ * Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
+ * Copyright (C) 2008 Timo Teräs <timo.teras@iki.fi>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation. See http://www.gnu.org/ for details.
+ */
+
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <malloc.h>
+
+#include "apk_defines.h"
+#include "apk_io.h"
+
+struct apk_fd_istream {
+ struct apk_istream is;
+ int fd;
+};
+
+static size_t fd_read(void *stream, void *ptr, size_t size)
+{
+ struct apk_fd_istream *fis =
+ container_of(stream, struct apk_fd_istream, is);
+ size_t i = 0, r;
+
+ if (ptr == NULL) {
+ if (lseek(fis->fd, size, SEEK_CUR) < 0)
+ return -1;
+ return size;
+ }
+
+ while (i < size) {
+ r = read(fis->fd, ptr + i, size - i);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return i;
+ i += r;
+ }
+
+ return i;
+}
+
+static size_t fd_splice(void *stream, int fd, size_t size)
+{
+ struct apk_fd_istream *fis =
+ container_of(stream, struct apk_fd_istream, is);
+ size_t i = 0, r;
+
+ while (i != size) {
+ r = splice(fis->fd, NULL, fd, NULL, size - i, SPLICE_F_MOVE);
+ if (r == -1)
+ return i;
+ i += r;
+ }
+
+ return i;
+}
+
+static void fd_close(void *stream)
+{
+ struct apk_fd_istream *fis =
+ container_of(stream, struct apk_fd_istream, is);
+
+ close(fis->fd);
+ free(fis);
+}
+
+struct apk_istream *apk_istream_from_fd(int fd)
+{
+ struct apk_fd_istream *fis;
+
+ fis = malloc(sizeof(struct apk_fd_istream));
+ if (fis == NULL)
+ return NULL;
+
+ *fis = (struct apk_fd_istream) {
+ .is.read = fd_read,
+ .is.splice = fd_splice,
+ .is.close = fd_close,
+ .fd = fd,
+ };
+
+ return &fis->is;
+}
+
+struct apk_istream *apk_istream_from_file(const char *file)
+{
+ int fd;
+
+ fd = open(file, O_RDONLY);
+ if (fd < 0)
+ return NULL;
+
+ return apk_istream_from_fd(fd);
+}
+
+size_t apk_istream_skip(struct apk_istream *is, size_t size)
+{
+ unsigned char buf[2048];
+ size_t done = 0, r, togo;
+
+ while (done < size) {
+ togo = size - done;
+ if (togo > sizeof(buf))
+ togo = sizeof(buf);
+ r = is->read(is, buf, togo);
+ if (r < 0)
+ return r;
+ done += r;
+ if (r != togo)
+ break;
+ }
+ return done;
+}
+
+size_t apk_istream_splice(void *stream, int fd, size_t size)
+{
+ struct apk_istream *is = (struct apk_istream *) stream;
+ unsigned char buf[2048];
+ size_t done = 0, r, togo;
+
+ while (done < size) {
+ togo = size - done;
+ if (togo > sizeof(buf))
+ togo = sizeof(buf);
+ r = is->read(is, buf, togo);
+ if (r < 0)
+ return r;
+ if (write(fd, buf, r) != r)
+ return -1;
+ done += r;
+ if (r != togo)
+ break;
+ }
+ return done;
+}
+
+struct apk_istream_bstream {
+ struct apk_bstream bs;
+ struct apk_istream *is;
+ csum_ctx_t csum_ctx;
+ unsigned char buffer[8*1024];
+};
+
+static size_t is_bs_read(void *stream, void **ptr)
+{
+ struct apk_istream_bstream *isbs =
+ container_of(stream, struct apk_istream_bstream, bs);
+ size_t size;
+
+ size = isbs->is->read(isbs->is, isbs->buffer, sizeof(isbs->buffer));
+ if (size <= 0)
+ return size;
+
+ csum_process(&isbs->csum_ctx, isbs->buffer, size);
+
+ *ptr = isbs->buffer;
+ return size;
+}
+
+static void is_bs_close(void *stream, csum_t csum)
+{
+ struct apk_istream_bstream *isbs =
+ container_of(stream, struct apk_istream_bstream, bs);
+
+ if (csum != NULL)
+ csum_finish(&isbs->csum_ctx, csum);
+
+ isbs->is->close(isbs->is);
+ free(isbs);
+}
+struct apk_bstream *apk_bstream_from_istream(struct apk_istream *istream)
+{
+ struct apk_istream_bstream *isbs;
+
+ isbs = malloc(sizeof(struct apk_istream_bstream));
+ if (isbs == NULL)
+ return NULL;
+
+ isbs->bs = (struct apk_bstream) {
+ .read = is_bs_read,
+ .close = is_bs_close,
+ };
+ isbs->is = istream;
+ csum_init(&isbs->csum_ctx);
+
+ return &isbs->bs;
+}
+
+struct apk_bstream *apk_bstream_from_fd(int fd)
+{
+ /* FIXME: Write mmap based bstream for files */
+ return apk_bstream_from_istream(apk_istream_from_fd(fd));
+}
+
+apk_blob_t apk_blob_from_istream(struct apk_istream *is, size_t size)
+{
+ void *ptr;
+ size_t rsize;
+
+ ptr = malloc(size);
+ if (ptr == NULL)
+ return APK_BLOB_NULL;
+
+ rsize = is->read(is, ptr, size);
+ if (rsize < 0) {
+ free(ptr);
+ return APK_BLOB_NULL;
+ }
+ if (rsize != size)
+ ptr = realloc(ptr, rsize);
+
+ return APK_BLOB_PTR_LEN(ptr, rsize);
+}
+
diff --git a/src/package.c b/src/package.c
index 1b41444..9132b18 100644
--- a/src/package.c
+++ b/src/package.c
@@ -254,7 +254,8 @@ static int read_info_line(void *ctx, apk_blob_t line)
return 0;
}
-static int read_info_entry(struct apk_archive_entry *ae, void *ctx)
+static int read_info_entry(void *ctx, const struct apk_archive_entry *ae,
+ struct apk_istream *is)
{
static struct {
const char *str;
@@ -277,7 +278,7 @@ static int read_info_entry(struct apk_archive_entry *ae, void *ctx)
if (ae->name[0] == '.') {
/* APK 2.0 format */
if (strcmp(ae->name, ".PKGINFO") == 0) {
- apk_blob_t blob = apk_archive_entry_read(ae);
+ apk_blob_t blob = apk_blob_from_istream(is, ae->size);
apk_blob_for_each_segment(blob, "\n", read_info_line, ctx);
free(blob.ptr);
/* FIXME: all done after checking if .INSTALL exists */
@@ -306,7 +307,7 @@ static int read_info_entry(struct apk_archive_entry *ae, void *ctx)
for (i = 0; i < ARRAY_SIZE(fields); i++) {
if (strcmp(fields[i].str, slash+1) == 0) {
- apk_blob_t blob = apk_archive_entry_read(ae);
+ apk_blob_t blob = apk_blob_from_istream(is, ae->size);
add_info(ri->db, ri->pkg, fields[i].field,
trim(blob));
free(blob.ptr);
@@ -326,8 +327,8 @@ static int read_info_entry(struct apk_archive_entry *ae, void *ctx)
struct apk_package *apk_pkg_read(struct apk_database *db, const char *file)
{
struct read_info_ctx ctx;
+ struct apk_bstream *bs;
struct stat st;
- pthread_t tid;
int fd;
ctx.pkg = calloc(1, sizeof(struct apk_package));
@@ -341,27 +342,27 @@ struct apk_package *apk_pkg_read(struct apk_database *db, const char *file)
fstat(fd, &st);
fcntl(fd, F_SETFD, FD_CLOEXEC);
- tid = apk_checksum_and_tee(&fd, ctx.pkg->csum);
- if (fd < 0)
+ bs = apk_bstream_from_fd(fd);
+ if (bs == NULL) {
+ close(fd);
goto err;
+ }
ctx.db = db;
ctx.pkg->size = st.st_size;
ctx.has_install = 0;
- if (apk_parse_tar_gz(fd, read_info_entry, &ctx) < 0) {
+ if (apk_parse_tar_gz(bs, read_info_entry, &ctx) < 0) {
apk_error("File %s is not an APK archive", file);
- pthread_join(tid, NULL);
+ bs->close(bs, NULL);
goto err;
}
- pthread_join(tid, NULL);
+ bs->close(bs, ctx.pkg->csum);
if (ctx.pkg->name == NULL) {
apk_error("File %s is corrupted", file);
goto err;
}
- close(fd);
-
/* Add implicit busybox dependency if there is scripts */
if (ctx.has_install) {
struct apk_dependency dep = {
@@ -405,7 +406,7 @@ int apk_pkg_get_state(struct apk_package *pkg)
return APK_STATE_NO_INSTALL;
}
-int apk_pkg_add_script(struct apk_package *pkg, int fd,
+int apk_pkg_add_script(struct apk_package *pkg, struct apk_istream *is,
unsigned int type, unsigned int size)
{
struct apk_script *script;
@@ -414,7 +415,7 @@ int apk_pkg_add_script(struct apk_package *pkg, int fd,
script = malloc(sizeof(struct apk_script) + size);
script->type = type;
script->size = size;
- r = read(fd, script->script, size);
+ r = is->read(is, script->script, size);
if (r < 0) {
free(script);
return r;