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/* ISC license. */
#include <sys/stat.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <skalibs/direntry.h>
#include <skalibs/djbunix.h>
#include <s6/servicedir.h>
#include <s6-rc/s6rc-utils.h>
#include <s6-rc/s6rc-servicedir.h>
#include "s6rc-servicedir-internal.h"
int s6rc_servicedir_copy_online (char const *src, char const *dst)
{
size_t srclen = strlen(src) ;
size_t dstlen = strlen(dst) ;
unsigned int n ;
unsigned int i = 0 ;
int wantup = 0 ;
int e ;
struct stat st ;
DIR *dir ;
char srcfn[srclen + S6_SERVICEDIR_FILE_MAXLEN + 6] ;
char dstfn[dstlen + S6_SERVICEDIR_FILE_MAXLEN + 6] ;
char oldfn[dstlen + S6_SERVICEDIR_FILE_MAXLEN + 6] ;
memcpy(srcfn, src, srclen) ;
srcfn[srclen] = '/' ;
memcpy(dstfn, dst, dstlen + 1) ;
memcpy(oldfn, dst, dstlen) ;
memcpy(oldfn + dstlen, "/old", 5) ;
if (rm_rf(oldfn) < 0 && errno != ENOENT) return 0 ;
{
mode_t m = umask(0) ;
int r = mkdir(oldfn, 0755) ;
umask(m) ;
if (r < 0) return 0 ;
}
dstfn[dstlen] = '/' ;
oldfn[dstlen + 4] = '/' ;
wantup = s6rc_servicedir_block(dst) ;
if (wantup < 0) { e = errno ; goto errdir ; }
for (; s6rc_servicedir_file_list[i].name ; i++)
{
strcpy(dstfn + dstlen + 1, s6rc_servicedir_file_list[i].name) ;
strcpy(oldfn + dstlen + 5, s6rc_servicedir_file_list[i].name) ;
if (rename(dstfn, oldfn) < 0
&& (errno != ENOENT || s6rc_servicedir_file_list[i].options & S6_SVFILE_MANDATORY))
{
e = errno ;
goto errrename ;
}
}
n = i ;
while (i--)
{
if (!s6rc_servicedir_copy_one(src, dst, s6rc_servicedir_file_list + i))
{
e = errno ;
goto errremove ;
}
}
oldfn[dstlen + 4] = 0 ;
rm_rf(oldfn) ;
/* New files copied, now let's update the instances with the new template */
memcpy(oldfn + dstlen + 1, "template", 9) ;
if (stat(oldfn, &st) == 0)
{
if (!S_ISDIR(st.st_mode)) { errno = EINVAL ; goto erri ; }
memcpy(dstfn + dstlen + 1, "instances", 10) ;
dir = opendir(dstfn) ;
if (!dir)
{
mode_t m ;
if (errno != ENOENT) goto erri ;
m = umask(0) ;
if (mkdir(dstfn, 0755) == -1) { umask(m) ; goto erri ; }
dstfn[dstlen + 9] = 0 ;
if (mkdir(dstfn, 0755) == -1) { umask(m) ; goto erri ; }
umask(m) ;
}
else
{
dstfn[dstlen + 10] = '/' ;
for (;;)
{
direntry *d ;
errno = 0 ;
d = readdir(dir) ;
if (!d) break ;
if (d->d_name[0] == '.')
if (((d->d_name[1] == '.') && !d->d_name[2]) || !d->d_name[1])
continue ;
{
size_t len = strlen(d->d_name) ;
char ifn[dstlen + 12 + len] ;
memcpy(ifn, dstfn, dstlen + 11) ;
memcpy(ifn + dstlen + 11, d->d_name, len + 1) ;
if (!s6rc_servicedir_copy_online(oldfn, ifn)) goto errd ;
}
}
dir_close(dir) ;
if (errno) goto erri ;
}
}
else if (errno != ENOENT) goto erri ;
s6rc_servicedir_unblock(dst, wantup) ;
return 1 ;
errremove:
for (; i < n ; i++)
{
strcpy(dstfn + dstlen + 1, s6rc_servicedir_file_list[i].name) ;
rm_rf(dstfn) ;
}
i = n ;
errrename:
while (i--)
{
strcpy(dstfn + dstlen + 1, s6rc_servicedir_file_list[i].name) ;
strcpy(oldfn + dstlen + 5, s6rc_servicedir_file_list[i].name) ;
rename(oldfn, dstfn) ;
}
s6rc_servicedir_unblock(dst, wantup) ;
errdir:
oldfn[dstlen + 4] = 0 ;
rmdir(oldfn) ;
errno = e ;
return 0 ;
errd:
dir_close(dir) ;
erri:
e = errno ;
s6rc_servicedir_unblock(dst, wantup) ;
errno = e ;
return 0 ;
}
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