install.c

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 #include <unistd.h>
 #include <sys/stat.h>
#include "buffer.h"
#include "logmsg.h"
#include "error.h"
#include "open.h"
#include "readwrite.h"
#include "exit.h"
#include "install.h"
 
extern void hier();
 
#define WHO "install"
 
int fdsourcedir = -1;
 
void h(char *home,int uid,int gid,int mode)
{
  if (mkdir(home,0700) == -1)
    if (errno != error_exist)
      logmsg(WHO,111,FATAL,B("unable to mkdir: ",home));
  if (chown(home,uid,gid) == -1)
    logmsg(WHO,111,FATAL,B("unable to chown: ",home));
  if (chmod(home,mode) == -1)
    logmsg(WHO,111,FATAL,B("unable to chmod: ",home));
}
 
void d(char *home,char *subdir,int uid,int gid,int mode)
{
  if (chdir(home) == -1)
    logmsg(WHO,111,FATAL,B("unable to switch to: ",home));
  if (mkdir(subdir,0700) == -1)
    if (errno != error_exist)
      logmsg(WHO,111,FATAL,B("unable to mkdir: ",home,"/",subdir));
  if (chown(subdir,uid,gid) == -1)
    logmsg(WHO,111,FATAL,B("unable to chown: ",home,"/",subdir));
  if (chmod(subdir,mode) == -1)
    logmsg(WHO,111,FATAL,B("unable to chmod ",home,"/",subdir));
}
 
char inbuf[BUFFER_INSIZE];
char outbuf[BUFFER_OUTSIZE];
buffer bi;
buffer bo;
 
void c(char *home,char *subdir,char *file,int uid,int gid,int mode)
{
  int fdin;
  int fdout;
 
  if (fchdir(fdsourcedir) == -1)
    logmsg(WHO,111,FATAL,"unable to switch back to source directory: ");
 
  fdin = open_read(file);
  if (fdin == -1)
    logmsg(WHO,111,FATAL,B("unable to read: ",file));
  buffer_init(&bi,read,fdin,inbuf,sizeof inbuf);
 
  if (chdir(home) == -1)
    logmsg(WHO,111,FATAL,B("unable to switch to: ",home));
  if (chdir(subdir) == -1)
    logmsg(WHO,111,FATAL,B("unable to switch to: ",home,"/",subdir));
 
  fdout = open_trunc(file);
  if (fdout == -1)
    logmsg(WHO,111,FATAL,B("unable to write: .../",subdir,"/",file));
  buffer_init(&bo,write,fdout,outbuf,sizeof outbuf);
 
  switch(buffer_copy(&bo,&bi)) {
    case -2:
      logmsg(WHO,111,FATAL,B("unable to read: ",file));
    case -3:
      logmsg(WHO,111,FATAL,B("unable to write: .../",subdir,"/",file));
  }
 
  close(fdin);
  if (buffer_flush(&bo) == -1)
    logmsg(WHO,111,FATAL,B("unable to write: .../",subdir,"/",file));
  if (fsync(fdout) == -1)
    logmsg(WHO,111,FATAL,B("unable to write: .../",subdir,"/",file));
  if (close(fdout) == -1) /* NFS silliness */
    logmsg(WHO,111,FATAL,B("unable to write: .../",subdir,"/",file));
 
  if (chown(file,uid,gid) == -1)
    logmsg(WHO,111,FATAL,B("unable to chown: .../",subdir,"/",file));
  if (chmod(file,mode) == -1)
    logmsg(WHO,111,FATAL,B("unable to chmod: .../",subdir,"/",file));
}
 
void z(char *home,char *subdir,char *file,int len,int uid,int gid,int mode)
{
  int fdout;
 
  if (chdir(home) == -1)
    logmsg(WHO,111,FATAL,B("unable to switch to: ",home));
  if (chdir(subdir) == -1)
    logmsg(WHO,111,FATAL,B("unable to switch to: ",home,"/",subdir));
 
  fdout = open_trunc(file);
  if (fdout == -1)
    logmsg(WHO,111,FATAL,B("unable to write: .../",subdir,"/",file));
  buffer_init(&bo,write,fdout,outbuf,sizeof outbuf);
 
  while (len-- > 0)
    if (buffer_put(&bo,"",1) == -1)
      logmsg(WHO,111,FATAL,B("unable to write: .../",subdir,"/",file));
 
  if (buffer_flush(&bo) == -1)
    logmsg(WHO,111,FATAL,B("unable to write: .../",subdir,"/",file));
  if (fsync(fdout) == -1)
    logmsg(WHO,111,FATAL,B("unable to write: .../",subdir,"/",file));
  if (close(fdout) == -1) /* NFS silliness */
    logmsg(WHO,111,FATAL,B("unable to write: .../",subdir,"/",file));
 
  if (chown(file,uid,gid) == -1)
    logmsg(WHO,111,FATAL,B("unable to chow: .../",subdir,"/",file));
  if (chmod(file,mode) == -1)
    logmsg(WHO,111,FATAL,B("unable to chmod .../",subdir,"/",file));
}
 
int main()
{
  fdsourcedir = open_read(".");
  if (fdsourcedir == -1)
    logmsg(WHO,111,FATAL,"unable to open current directory: ");
 
  umask(077);
  hier();
  _exit(0);
}