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io: flag for following symlinks on fstat 

usually we are interested on the actual file's length. but
audit is interested about the link. so add a flag for this and
use it in audit.
cute-signatures
Timo Teras 2009-08-05 13:13:52 +03:00
parent 856181a032
commit 46e9329568
3 changed files with 11 additions and 5 deletions
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4
src/apk_io.h
View File

@ -88,7 +88,9 @@ size_t apk_ostream_write_string(struct apk_ostream *ostream, const char *string)
apk_blob_t apk_blob_from_istream(struct apk_istream *istream, size_t size);
apk_blob_t apk_blob_from_file(int atfd, const char *file);
int apk_file_get_info(int atfd, const char *filename, int checksum,
#define APK_FI_NOFOLLOW 0x80000000
int apk_file_get_info(int atfd, const char *filename, unsigned int flags,
struct apk_file_info *fi);
int apk_url_download(const char *url, int atfd, const char *file);
const char *apk_url_local_file(const char *url);

4
src/audit.c
View File

@ -27,7 +27,7 @@ static int audit_file(struct apk_database *db, struct apk_db_file *dbf,
{
struct apk_file_info fi;
if (apk_file_get_info(db->root_fd, name, dbf->csum.type, &fi) != 0)
if (apk_file_get_info(db->root_fd, name, APK_FI_NOFOLLOW | dbf->csum.type, &fi) != 0)
return 1;
if (dbf->csum.type != APK_CHECKSUM_NONE &&
@ -62,7 +62,7 @@ static int audit_directory(apk_hash_item item, void *ctx)
snprintf(tmp, sizeof(tmp), "%s/%s", dbd->name, de->d_name);
if (apk_file_get_info(db->root_fd, tmp, APK_CHECKSUM_NONE, &fi) < 0)
if (apk_file_get_info(db->root_fd, tmp, APK_FI_NOFOLLOW, &fi) < 0)
continue;
if ((dbd->flags & APK_DBDIRF_SYMLINKS_ONLY) &&

8
src/io.c
View File

@ -463,13 +463,17 @@ err_fd:
return APK_BLOB_NULL;
}
int apk_file_get_info(int atfd, const char *filename, int checksum,
int apk_file_get_info(int atfd, const char *filename, unsigned int flags,
struct apk_file_info *fi)
{
struct stat64 st;
struct apk_bstream *bs;
int checksum = flags & 0xffff, atflags = 0;
if (fstatat64(atfd, filename, &st, AT_SYMLINK_NOFOLLOW) != 0)
if (flags & APK_FI_NOFOLLOW)
atflags |= AT_SYMLINK_NOFOLLOW;
if (fstatat64(atfd, filename, &st, atflags) != 0)
return -errno;
*fi = (struct apk_file_info) {