mdw@git.distorted.org.uk Git - dot-forward/blob - install.c

   1 #include "substdio.h"
   2 #include "strerr.h"
   3 #include "error.h"
   4 #include "open.h"
   5 #include "readwrite.h"
   6 #include "exit.h"
   7
   8 extern void hier(char *);
   9
  10 #define FATAL "install: fatal: "
  11
  12 int fdsourcedir = -1;
  13
  14 void h(home,uid,gid,mode)
  15 char *home;
  16 int uid;
  17 int gid;
  18 int mode;
  19 {
  20   if (mkdir(home,0700) == -1)
  21     if (errno != error_exist)
  22       strerr_die4sys(111,FATAL,"unable to mkdir ",home,": ");
  23   if (chown(home,uid,gid) == -1)
  24     strerr_die4sys(111,FATAL,"unable to chown ",home,": ");
  25   if (chmod(home,mode) == -1)
  26     strerr_die4sys(111,FATAL,"unable to chmod ",home,": ");
  27 }
  28
  29 void d(home,subdir,uid,gid,mode)
  30 char *home;
  31 char *subdir;
  32 int uid;
  33 int gid;
  34 int mode;
  35 {
  36   if (chdir(home) == -1)
  37     strerr_die4sys(111,FATAL,"unable to switch to ",home,": ");
  38   if (mkdir(subdir,0700) == -1)
  39     if (errno != error_exist)
  40       strerr_die6sys(111,FATAL,"unable to mkdir ",home,"/",subdir,": ");
  41   if (chown(subdir,uid,gid) == -1)
  42     strerr_die6sys(111,FATAL,"unable to chown ",home,"/",subdir,": ");
  43   if (chmod(subdir,mode) == -1)
  44     strerr_die6sys(111,FATAL,"unable to chmod ",home,"/",subdir,": ");
  45 }
  46
  47 char inbuf[SUBSTDIO_INSIZE];
  48 char outbuf[SUBSTDIO_OUTSIZE];
  49 substdio ssin;
  50 substdio ssout;
  51
  52 void c(home,subdir,file,uid,gid,mode)
  53 char *home;
  54 char *subdir;
  55 char *file;
  56 int uid;
  57 int gid;
  58 int mode;
  59 {
  60   int fdin;
  61   int fdout;
  62
  63   if (fchdir(fdsourcedir) == -1)
  64     strerr_die2sys(111,FATAL,"unable to switch back to source directory: ");
  65
  66   fdin = open_read(file);
  67   if (fdin == -1)
  68     strerr_die4sys(111,FATAL,"unable to read ",file,": ");
  69   substdio_fdbuf(&ssin,read,fdin,inbuf,sizeof inbuf);
  70
  71   if (chdir(home) == -1)
  72     strerr_die4sys(111,FATAL,"unable to switch to ",home,": ");
  73   if (chdir(subdir) == -1)
  74     strerr_die6sys(111,FATAL,"unable to switch to ",home,"/",subdir,": ");
  75
  76   fdout = open_trunc(file);
  77   if (fdout == -1)
  78     strerr_die6sys(111,FATAL,"unable to write .../",subdir,"/",file,": ");
  79   substdio_fdbuf(&ssout,write,fdout,outbuf,sizeof outbuf);
  80
  81   switch(substdio_copy(&ssout,&ssin)) {
  82     case -2:
  83       strerr_die4sys(111,FATAL,"unable to read ",file,": ");
  84     case -3:
  85       strerr_die6sys(111,FATAL,"unable to write .../",subdir,"/",file,": ");
  86   }
  87
  88   close(fdin);
  89   if (substdio_flush(&ssout) == -1)
  90     strerr_die6sys(111,FATAL,"unable to write .../",subdir,"/",file,": ");
  91   if (fsync(fdout) == -1)
  92     strerr_die6sys(111,FATAL,"unable to write .../",subdir,"/",file,": ");
  93   if (close(fdout) == -1) /* NFS silliness */
  94     strerr_die6sys(111,FATAL,"unable to write .../",subdir,"/",file,": ");
  95
  96   if (chown(file,uid,gid) == -1)
  97     strerr_die6sys(111,FATAL,"unable to chown .../",subdir,"/",file,": ");
  98   if (chmod(file,mode) == -1)
  99     strerr_die6sys(111,FATAL,"unable to chmod .../",subdir,"/",file,": ");
 100 }
 101
 102 void main(int argc, char *argv[])
 103 {
 104   char *home = 0;
 105   fdsourcedir = open_read(".");
 106   if (argc > 1)
 107     home = argv[1];
 108   if (fdsourcedir == -1)
 109     strerr_die2sys(111,FATAL,"unable to open current directory: ");
 110
 111   umask(077);
 112   hier(home);
 113   _exit(0);
 114 }