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/* ISC license. */
#include <string.h>
#include <stdint.h>
#include <unistd.h>
#include <errno.h>
#include <skalibs/direntry.h>
#include <skalibs/posixplz.h>
#include <skalibs/strerr.h>
#include <skalibs/stralloc.h>
#include <skalibs/genalloc.h>
#include <s6-rc/repo.h>
static int unlink_stales_in_sub (char const *repo, size_t repolen, char const *set, char const *sub, uint32_t where, stralloc *sa, genalloc *ga, unsigned int verbosity)
{
size_t setlen = strlen(set) ;
size_t sublen = strlen(sub) ;
size_t subfnlen = repolen + setlen + sublen + 10 ;
char subfn[subfnlen + 1] ;
memcpy(subfn, repo, repolen) ;
memcpy(subfn + repolen, "/sources/", 9) ;
memcpy(subfn + repolen + 9, set, setlen) ;
subfn[repolen + 9 + setlen] = '/' ;
memcpy(subfn + repolen + 10 + setlen, sub, sublen + 1) ;
DIR *dir = opendir(subfn) ;
if (!dir)
{
strerr_warnfu2sys("opendir ", subfn) ;
return 0 ;
}
for (;;)
{
size_t len ;
direntry *d ;
errno = 0 ;
d = readdir(dir) ;
if (!d) break ;
if (d->d_name[0] == '.') continue ;
len = strlen(d->d_name) ;
char fn[subfnlen + len + 2] ;
memcpy(fn, subfn, sublen) ;
fn[sublen] = '/' ;
memcpy(fn + sublen + 1, d->d_name, len+1) ;
if (access(fn, F_OK) == -1)
{
if (errno != ENOENT)
{
strerr_warnfu2sys("access ", fn) ;
goto err ;
}
unlink_void(fn) ;
if (verbosity >= 3)
strerr_warni6x("service ", d->d_name, " does not exist anymore, removed from sub ", sub, " of set ", set) ;
}
else
{
if (!genalloc_append(size_t, ga, &sa->len)) goto err ;
if (!stralloc_catb(sa, d->d_name, len+1)) goto err ;
}
}
if (errno)
{
strerr_warnfu2sys("readdir ", subfn) ;
goto err ;
}
dir_close(dir) ;
return 1 ;
err:
dir_close(dir) ;
return 0 ;
}
int s6rc_repo_syncset_tmp (char const *repo, char const *set, stralloc *sa, genalloc *ga, unsigned int verbosity)
{
size_t repolen = strlen(repo) ;
size_t sabase = sa->len ;
size_t gabase = genalloc_len(size_t, ga) ;
for (unsigned int i = 0 ; i < 4 ; i++)
if (unlink_stales_in_sub(repo, repolen, set, s6rc_repo_subnames[i], i, sa, ga, verbosity)) goto err ;
{
uint32_t n = genalloc_len(size_t, ga) ;
char const *stillhere[n + !n] ;
for (uint32_t i = 0 ; i < n ; i++) stillhere[i] = sa->s + genalloc_s(size_t, ga)[i] ;
if (!s6rc_repo_fillset(repo, set, stillhere, n)) goto err ;
}
sa->len = sabase ;
genalloc_setlen(size_t, ga, gabase) ;
return 1 ;
err:
sa->len = sabase ;
genalloc_setlen(size_t, ga, gabase) ;
return 0 ;
}
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