diff options
Diffstat (limited to 'split/split.c')
-rw-r--r-- | split/split.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/split/split.c b/split/split.c new file mode 100644 index 000000000..facdeb0e5 --- /dev/null +++ b/split/split.c @@ -0,0 +1,71 @@ +/* + * dpkg-split - splitting and joining of multipart *.deb archives + * split.c - splitting archives + * + * Copyright (C) 1995 Ian Jackson <iwj10@cus.cam.ac.uk> + * + * This is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2, + * or (at your option) any later version. + * + * This is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with dpkg; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <limits.h> +#include <assert.h> +#include <unistd.h> +#include <string.h> +#include <sys/stat.h> +#include <fcntl.h> + +#include "config.h" +#include "dpkg.h" +#include "dpkg-db.h" +#include "dpkg-split.h" + +void do_split(const char *const *argv) { + const char *sourcefile, *prefix; + char *palloc; + int l, fd; + char partsizebuf[30], lengthbuf[30], partsizeallowbuf[30]; + struct stat stab; + + sourcefile= *argv++; + if (!sourcefile) + badusage("--split needs a source filename argument"); + prefix= *argv++; + if (prefix && *argv) + badusage("--split takes at most a source filename and destination prefix"); + if (!prefix) { + l= strlen(sourcefile); + palloc= nfmalloc(l+1); + strcpy(palloc,sourcefile); + if (!strcmp(palloc+l-(sizeof(DEBEXT)-1),DEBEXT)) { + l -= (sizeof(DEBEXT)-1); + palloc[l]= 0; + } + prefix= palloc; + } + sprintf(partsizebuf,"%ld",maxpartsize-HEADERALLOWANCE); + sprintf(partsizeallowbuf,"%ld",maxpartsize); + fd= open(sourcefile,O_RDONLY); + if (!fd) ohshite("unable to open source file `%.250s'",sourcefile); + if (fstat(fd,&stab)) ohshite("unable to fstat source file"); + if (!S_ISREG(stab.st_mode)) ohshit("source file `%.250s' not a plain file",sourcefile); + sprintf(lengthbuf,"%lu",(unsigned long)stab.st_size); + m_dup2(fd,0); + execl(MKSPLITSCRIPT,MKSPLITSCRIPT, + sourcefile,partsizebuf,prefix,lengthbuf,partsizeallowbuf,msdos?"yes":"no", + (char*)0); + ohshite("unable to exec " MKSPLITSCRIPT); +} |