diff options
author | Glenn L McGrath <bug1@ihug.co.nz> | 2001-04-11 05:37:03 +0400 |
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committer | Glenn L McGrath <bug1@ihug.co.nz> | 2001-04-11 05:37:03 +0400 |
commit | 9d53c8ab74ecb2be62ebf4c61350b842787cc6b9 (patch) | |
tree | c351bc7377b948c358f0f9c7da1f225b6f349ee3 /archival/ar.c | |
parent | 93ffa950bfd349c8d8ff40f1f862f2b7483584d4 (diff) |
Move get_ar_headers to libbb, make dpkg_deb.c independent of ar.c
Diffstat (limited to 'archival/ar.c')
-rw-r--r-- | archival/ar.c | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/archival/ar.c b/archival/ar.c index 89c43b43d..fbbc7aa64 100644 --- a/archival/ar.c +++ b/archival/ar.c @@ -23,113 +23,11 @@ * */ #include <fcntl.h> -#include <string.h> #include <stdlib.h> #include <getopt.h> #include <unistd.h> #include "busybox.h" -typedef struct ar_headers_s { - char *name; - off_t size; - uid_t uid; - gid_t gid; - mode_t mode; - time_t mtime; - off_t offset; - struct ar_headers_s *next; -} ar_headers_t; - -/* - * return the headerL_t struct for the filename descriptor - */ -extern ar_headers_t get_ar_headers(int srcFd) -{ - typedef struct raw_ar_header_s { /* Byte Offset */ - char name[16]; /* 0-15 */ - char date[12]; /* 16-27 */ - char uid[6]; - char gid[6]; /* 28-39 */ - char mode[8]; /* 40-47 */ - char size[10]; /* 48-57 */ - char fmag[2]; /* 58-59 */ - } raw_ar_header_t; - - raw_ar_header_t raw_ar_header; - - ar_headers_t *head, *entry; - char ar_magic[8]; - char *long_name=NULL; - - head = (ar_headers_t *) xmalloc(sizeof(ar_headers_t)); - entry = (ar_headers_t *) xmalloc(sizeof(ar_headers_t)); - - /* check ar magic */ - if (full_read(srcFd, ar_magic, 8) != 8) { - error_msg_and_die("cannot read magic"); - } - - if (strncmp(ar_magic,"!<arch>",7) != 0) { - error_msg_and_die("invalid magic"); - } - - while (full_read(srcFd, (char *) &raw_ar_header, 60)==60) { - /* check the end of header markers are valid */ - if ((raw_ar_header.fmag[0]!='`') || (raw_ar_header.fmag[1]!='\n')) { - char newline; - if (raw_ar_header.fmag[1]!='`') { - break; - } - /* some version of ar, have an extra '\n' after each entry */ - read(srcFd, &newline, 1); - if (newline!='\n') { - break; - } - /* fix up the header, we started reading 1 byte too early due to a '\n' */ - memmove((char *) &raw_ar_header, (char *)&raw_ar_header+1, 59); - /* dont worry about adding the last '\n', we dont need it now */ - } - - entry->size = (off_t) atoi(raw_ar_header.size); - /* long filenames have '/' as the first character */ - if (raw_ar_header.name[0] == '/') { - if (raw_ar_header.name[1] == '/') { - /* multiple long filenames are stored as data in one entry */ - long_name = (char *) xrealloc(long_name, entry->size); - full_read(srcFd, long_name, entry->size); - continue; - } - else { - /* The number after the '/' indicates the offset in the ar data section - (saved in variable long_name) that conatains the real filename */ - const int long_name_offset = (int) atoi((char *) &raw_ar_header.name[1]); - entry->name = xmalloc(strlen(&long_name[long_name_offset])); - strcpy(entry->name, &long_name[long_name_offset]); - } - } - else { - /* short filenames */ - entry->name = xmalloc(16); - strncpy(entry->name, raw_ar_header.name, 16); - } - entry->name[strcspn(entry->name, " /")]='\0'; - - /* convert the rest of the now valid char header to its typed struct */ - parse_mode(raw_ar_header.mode, &entry->mode); - entry->mtime = atoi(raw_ar_header.date); - entry->uid = atoi(raw_ar_header.uid); - entry->gid = atoi(raw_ar_header.gid); - entry->offset = lseek(srcFd, 0, SEEK_CUR); - - /* add this entries header to our combined list */ - entry->next = (ar_headers_t *) xmalloc(sizeof(ar_headers_t)); - *entry->next = *head; - *head = *entry; - lseek(srcFd, (off_t) entry->size, SEEK_CUR); - } - return(*head); -} - extern int ar_main(int argc, char **argv) { const int preserve_date = 1; /* preserve original dates */ |