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/* ISC license. */
#include <skalibs/nonposix.h> /* mkdtemp */
#include <string.h>
#include <stdint.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <skalibs/uint16.h>
#include <skalibs/posixplz.h>
#include <skalibs/stat.h>
#include <skalibs/strerr.h>
#include <skalibs/djbunix.h>
#include <skalibs/unix-transactional.h>
#include <s6-rc/repo.h>
int s6rc_repo_makestores (char const *repo, char const *const *stores, uint16_t n, char *sold)
{
size_t repolen = strlen(repo) ;
mode_t m = umask(0) ;
char slink[repolen + 8] ;
char sdir[repolen + 21] ;
memcpy(slink, repo, repolen) ;
memcpy(slink + repolen, "/stores", 8) ;
memcpy(sdir, slink, repolen + 1) ;
memcpy(sdir + repolen + 1, ".stores:XXXXXX", 15) ;
if (!mkdtemp(sdir))
{
umask(m) ;
strerr_warnfu2sys("mkdtemp ", sdir) ;
return 0 ;
}
umask(m) ;
sdir[repolen + 15] = '/' ;
sdir[repolen + 20] = 0 ;
for (uint16_t i = 0 ; i < n ; i++)
{
uint160_xfmt(sdir + repolen + 16, i, 4) ;
if (symlink(stores[i], sdir) == -1)
{
strerr_warnfu4sys("symlink ", stores[i], " to ", sdir) ;
sdir[repolen + 15] = 0 ;
goto err ;
}
}
sdir[repolen + 15] = 0 ;
if (chmod(sdir, 02755) == -1)
{
strerr_warnfu2sys("chmod ", sdir) ;
goto err ;
}
if (!atomic_symlink4(sdir + repolen + 1, slink, sold, 15))
{
strerr_warnfu4sys("atomically symlink ", sdir + repolen + 1, " to ", slink) ;
goto err ;
}
return 1 ;
err:
rm_rf(sdir) ;
return 0 ;
}
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