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io: make ostream_file always use tmpname

cute-signatures
Timo Teräs 2020-10-02 15:25:12 +03:00
parent 2156107afc
commit 6d71f49c11
7 changed files with 36 additions and 63 deletions
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2
src/apk_io.h
View File

@ -147,7 +147,7 @@ struct apk_ostream {
struct apk_ostream *apk_ostream_gzip(struct apk_ostream *);
struct apk_ostream *apk_ostream_counter(off_t *);
struct apk_ostream *apk_ostream_to_fd(int fd);
struct apk_ostream *apk_ostream_to_file(int atfd, const char *file, const char *tmpfile, mode_t mode);
struct apk_ostream *apk_ostream_to_file(int atfd, const char *file, mode_t mode);
struct apk_ostream *apk_ostream_to_file_gz(int atfd, const char *file, const char *tmpfile, mode_t mode);
size_t apk_ostream_write_string(struct apk_ostream *ostream, const char *string);
static inline void apk_ostream_cancel(struct apk_ostream *os, int rc) { if (!os->rc) os->rc = rc; }

7
src/app_adbsign.c
View File

@ -64,22 +64,17 @@ static int update_signatures(struct adb_xfrm *xfrm, struct adb_block *blk, struc
static int adbsign_main(void *pctx, struct apk_database *db, struct apk_string_array *args)
{
char tmpname[PATH_MAX];
struct sign_ctx *ctx = pctx;
char **arg;
int r;
ctx->db = db;
foreach_array_item(arg, args) {
if (snprintf(tmpname, sizeof tmpname, "%s.tmp", *arg) >= sizeof tmpname) {
r = ENAMETOOLONG;
} else {
ctx->xfrm.is = apk_istream_from_file(AT_FDCWD, *arg);
ctx->xfrm.os = apk_ostream_to_file(AT_FDCWD, *arg, tmpname, 0644);
ctx->xfrm.os = apk_ostream_to_file(AT_FDCWD, *arg, 0644);
adb_c_xfrm(&ctx->xfrm, update_signatures);
apk_istream_close(ctx->xfrm.is);
r = apk_ostream_close(ctx->xfrm.os);
}
if (r) apk_error("%s: %s", *arg, apk_error_str(r));
}

2
src/app_convdb.c
View File

@ -216,7 +216,7 @@ static int conv_main(void *pctx, struct apk_database *db, struct apk_string_arra
r = adb_c_create(
//apk_ostream_to_file(db->root_fd, "lib/apk/db/installed.adb", 0644),
apk_ostream_to_file(AT_FDCWD, "installed.adb", 0, 0644),
apk_ostream_to_file(AT_FDCWD, "installed.adb", 0644),
&ctx->dbi, &db->trust);
if (r == 0) {
// unlink old files

2
src/app_index.c
View File

@ -199,7 +199,7 @@ static int index_main(void *ctx, struct apk_database *db, struct apk_string_arra
return -1;
if (ictx->output != NULL)
os = apk_ostream_to_file(AT_FDCWD, ictx->output, NULL, 0644);
os = apk_ostream_to_file(AT_FDCWD, ictx->output, 0644);
else
os = apk_ostream_to_fd(STDOUT_FILENO);
if (IS_ERR_OR_NULL(os)) return -1;

2
src/app_mkndx.c
View File

@ -293,7 +293,7 @@ static int mkndx_main(void *pctx, struct apk_database *db, struct apk_string_arr
adb_w_rootobj(&ndx);
r = adb_c_create(
apk_ostream_to_file(AT_FDCWD, ctx->output, NULL, 0644),
apk_ostream_to_file(AT_FDCWD, ctx->output, 0644),
&ctx->db, &db->trust);
adb_free(&ctx->db);

35
src/database.c
View File

@ -53,23 +53,13 @@ unsigned int apk_flags = 0, apk_force = 0;
static apk_blob_t tmpprefix = { .len=8, .ptr = ".apknew." };
static const char * const apkindex_tar_gz = "APKINDEX.tar.gz";
static const char * const apk_static_cache_dir = "var/cache/apk";
static const char * const apk_world_file = "etc/apk/world";
static const char * const apk_world_file_tmp = "etc/apk/world.new";
static const char * const apk_arch_file = "etc/apk/arch";
static const char * const apk_lock_file = "lib/apk/db/lock";
static const char * const apk_scripts_file = "lib/apk/db/scripts.tar";
static const char * const apk_scripts_file_tmp = "lib/apk/db/scripts.tar.new";
static const char * const apk_triggers_file = "lib/apk/db/triggers";
static const char * const apk_triggers_file_tmp = "lib/apk/db/triggers.new";
const char * const apk_installed_file = "lib/apk/db/installed";
static const char * const apk_installed_file_tmp = "lib/apk/db/installed.new";
static struct apk_db_acl *apk_default_acl_dir, *apk_default_acl_file;
@ -1221,10 +1211,7 @@ static int apk_db_index_write_nr_cache(struct apk_database *db)
/* Write list of installed non-repository packages to
* cached index file */
os = apk_ostream_to_file(db->cache_fd,
"installed",
"installed.new",
0644);
os = apk_ostream_to_file(db->cache_fd, "installed", 0644);
if (IS_ERR_OR_NULL(os)) return PTR_ERR(os);
ctx.os = os;
@ -1767,29 +1754,20 @@ int apk_db_write_config(struct apk_database *db)
return -1;
}
os = apk_ostream_to_file(db->root_fd,
apk_world_file,
apk_world_file_tmp,
0644);
os = apk_ostream_to_file(db->root_fd, apk_world_file, 0644);
if (IS_ERR_OR_NULL(os)) return PTR_ERR(os);
apk_deps_write(db, db->world, os, APK_BLOB_PTR_LEN("\n", 1));
apk_ostream_write(os, "\n", 1);
r = apk_ostream_close(os);
if (r < 0) return r;
os = apk_ostream_to_file(db->root_fd,
apk_installed_file,
apk_installed_file_tmp,
0644);
os = apk_ostream_to_file(db->root_fd, apk_installed_file, 0644);
if (IS_ERR_OR_NULL(os)) return PTR_ERR(os);
apk_db_write_fdb(db, os);
r = apk_ostream_close(os);
if (r < 0) return r;
os = apk_ostream_to_file(db->root_fd,
apk_scripts_file,
apk_scripts_file_tmp,
0644);
os = apk_ostream_to_file(db->root_fd, apk_scripts_file, 0644);
if (IS_ERR_OR_NULL(os)) return PTR_ERR(os);
apk_db_scriptdb_write(db, os);
r = apk_ostream_close(os);
@ -1797,10 +1775,7 @@ int apk_db_write_config(struct apk_database *db)
apk_db_index_write_nr_cache(db);
os = apk_ostream_to_file(db->root_fd,
apk_triggers_file,
apk_triggers_file_tmp,
0644);
os = apk_ostream_to_file(db->root_fd, apk_triggers_file, 0644);
if (IS_ERR_OR_NULL(os)) return PTR_ERR(os);
apk_db_triggers_write(db, os);
r = apk_ostream_close(os);

37
src/io.c
View File

@ -829,7 +829,7 @@ struct apk_fd_ostream {
struct apk_ostream os;
int fd;
const char *file, *tmpfile;
const char *file;
int atfd;
size_t bytes;
@ -902,12 +902,17 @@ static int fdo_close(struct apk_ostream *os)
close(fos->fd) < 0)
rc = -errno;
if (fos->tmpfile != NULL) {
if (rc == 0)
renameat(fos->atfd, fos->tmpfile,
fos->atfd, fos->file);
else
unlinkat(fos->atfd, fos->tmpfile, 0);
if (fos->file) {
char tmpname[PATH_MAX];
snprintf(tmpname, sizeof tmpname, "%s.tmp", fos->file);
if (rc == 0) {
if (renameat(fos->atfd, tmpname,
fos->atfd, fos->file) < 0)
rc = -errno;
} else {
unlinkat(fos->atfd, tmpname, 0);
}
}
free(fos);
@ -940,15 +945,16 @@ struct apk_ostream *apk_ostream_to_fd(int fd)
return &fos->os;
}
struct apk_ostream *apk_ostream_to_file(int atfd,
const char *file,
const char *tmpfile,
mode_t mode)
struct apk_ostream *apk_ostream_to_file(int atfd, const char *file, mode_t mode)
{
char tmpname[PATH_MAX];
struct apk_ostream *os;
int fd;
fd = openat(atfd, tmpfile ?: file, O_CREAT | O_RDWR | O_TRUNC | O_CLOEXEC, mode);
if (snprintf(tmpname, sizeof tmpname, "%s.tmp", file) >= sizeof tmpname)
return ERR_PTR(-ENAMETOOLONG);
fd = openat(atfd, tmpname, O_CREAT | O_RDWR | O_TRUNC | O_CLOEXEC, mode);
if (fd < 0) return ERR_PTR(-errno);
fcntl(fd, F_SETFD, FD_CLOEXEC);
@ -956,13 +962,10 @@ struct apk_ostream *apk_ostream_to_file(int atfd,
os = apk_ostream_to_fd(fd);
if (IS_ERR_OR_NULL(os)) return ERR_CAST(os);
if (tmpfile != NULL) {
struct apk_fd_ostream *fos =
container_of(os, struct apk_fd_ostream, os);
struct apk_fd_ostream *fos = container_of(os, struct apk_fd_ostream, os);
fos->file = file;
fos->tmpfile = tmpfile;
fos->atfd = atfd;
}
return os;
}