diff options
| author | Denys Vlasenko <vda.linux@googlemail.com> | 2009-08-28 21:15:24 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2009-08-28 21:15:24 +0200 |
| commit | e6c483ec303adf153efa875b0b356bb47370fc56 (patch) | |
| tree | 1331b92316d3d0089720c1650103a43669ce69fa /archival/rpm2cpio.c | |
| parent | 0a130d510dc5272dc2fc7bc5a116f0694c8bd2a9 (diff) | |
| download | busybox-e6c483ec303adf153efa875b0b356bb47370fc56.tar.gz | |
rpm2cpio: code shrink
function old new delta
skip_header 94 92 -2
rpm2cpio_main 177 174 -3
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-5) Total: -5 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'archival/rpm2cpio.c')
| -rw-r--r-- | archival/rpm2cpio.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/archival/rpm2cpio.c b/archival/rpm2cpio.c index 30ec80e22..5403aee02 100644 --- a/archival/rpm2cpio.c +++ b/archival/rpm2cpio.c @@ -23,7 +23,7 @@ struct rpm_lead { char reserved[16]; }; -#define RPM_HEADER_VERnMAGIC 0x8eade801 +#define RPM_HEADER_MAGICnVER 0x8eade801 #define RPM_HEADER_MAGIC_STR "\216\255\350" struct rpm_header { @@ -33,7 +33,9 @@ struct rpm_header { uint32_t size; /* Size of store (4 bytes) */ }; -static unsigned skip_header(int rpm_fd) +enum { rpm_fd = STDIN_FILENO }; + +static unsigned skip_header(void) { struct rpm_header header; unsigned len; @@ -45,9 +47,9 @@ static unsigned skip_header(int rpm_fd) // if (header.version != 1) { // bb_error_msg_and_die("unsupported RPM header version"); // } - if (header.magic_and_ver != htonl(RPM_HEADER_VERnMAGIC)) { + if (header.magic_and_ver != htonl(RPM_HEADER_MAGICnVER)) { bb_error_msg_and_die("invalid RPM header magic or unsupported version"); - // ": %x != %x", header.magic_and_ver, htonl(RPM_HEADER_VERnMAGIC)); + // ": %x != %x", header.magic_and_ver, htonl(RPM_HEADER_MAGICnVER)); } /* Seek past index entries, and past store */ @@ -62,15 +64,12 @@ int rpm2cpio_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int rpm2cpio_main(int argc UNUSED_PARAM, char **argv) { struct rpm_lead lead; - int rpm_fd; unsigned pos; unsigned char magic[2]; IF_DESKTOP(long long) int FAST_FUNC (*unpack)(int src_fd, int dst_fd); - if (!argv[1]) { - rpm_fd = STDIN_FILENO; - } else { - rpm_fd = xopen(argv[1], O_RDONLY); + if (argv[1]) { + xmove_fd(xopen(argv[1], O_RDONLY), rpm_fd); } xread(rpm_fd, &lead, sizeof(lead)); @@ -80,11 +79,11 @@ int rpm2cpio_main(int argc UNUSED_PARAM, char **argv) } /* Skip the signature header, align to 8 bytes */ - pos = skip_header(rpm_fd); + pos = skip_header(); seek_by_jump(rpm_fd, (8 - pos) & 7); /* Skip the main header */ - skip_header(rpm_fd); + skip_header(); xread(rpm_fd, &magic, 2); unpack = unpack_gz_stream; |