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vere: copy binary instead of link on boot

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This commit is contained in:
Joe Bryan 2022-05-20 12:58:07 -04:00
parent 302024330c
commit 5036d53834
2 changed files with 167 additions and 10 deletions
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3
pkg/urbit/include/c/portable.h
View File

@ -35,6 +35,7 @@
# include <sys/time.h>
# include <sys/resource.h>
# include <sys/mman.h>
# include <sys/sendfile.h>
# elif defined(U3_OS_osx)
# include <inttypes.h>
@ -53,6 +54,8 @@
# include <sys/resource.h>
# include <sys/syslimits.h>
# include <sys/mman.h>
# include <sys/clonefile.h>
# include <copyfile.h>
# elif defined(U3_OS_bsd)
# include <inttypes.h>

174
pkg/urbit/vere/king.c
View File

@ -1157,10 +1157,160 @@ _king_get_vere(c3_c* pac_c, c3_c* ver_c, c3_c* arc_c, c3_t lin_t)
return 0;
}
/* _king_link_vere(): link current binary into $pier/.bin
static c3_i
_king_copy_raw(c3_i src_i, c3_i dst_i, c3_y* buf_y, size_t pag_i)
{
ssize_t red_i, ryt_i;
size_t len_i;
c3_y* fub_y = buf_y;
do {
if ( 0 > (red_i = read(src_i, buf_y, pag_i)) ) {
return -1;
}
len_i = red_i;
do {
if ( 0 > (ryt_i = write(dst_i, buf_y, len_i)) ) {
return -1;
}
buf_y += ryt_i;
len_i -= ryt_i;
}
while ( len_i );
buf_y = fub_y;
}
while ( red_i );
return 0;
}
#if defined(U3_OS_mingw)
int err_win_to_posix(DWORD winerr);
#endif
static c3_i
_king_copy_file(c3_c* src_c, c3_c* dst_c)
{
#if defined(U3_OS_mingw)
// XX try FSCTL_DUPLICATE_EXTENTS_TO_FILE
//
if ( CopyFileA(src_c, dst_c, TRUE) ) {
return 0;
}
// XX fallback on any?
//
errno = err_win_to_posix(GetLastError());
return -1;
#elif defined(U3_OS_osx)
if ( !clonefile(src_c, dst_c, 0) ) {
return 0;
}
// fallthru to copying bytes on some errors
//
else if ( (ENOTSUP != errno) && (EXDEV != errno) ) {
return -1;
}
#endif
{
c3_i src_i, dst_i, ret_i = 0, err_i = 0;
if ( -1 == (src_i = open(src_c, O_RDONLY, 0644)) ) {
err_i = errno;
ret_i = -1;
goto done1;
}
if ( -1 == (dst_i = open(dst_c, O_RDWR | O_CREAT, 0755)) ) {
err_i = errno;
ret_i = -1;
goto done2;
}
// XX try clone_file_range ?
//
#if defined(U3_OS_linux)
#if defined(FICLONE)
if ( !ioctl(dst_i, FICLONE, src_i) ) {
ret_i = 0;
goto done3;
}
// fallthru to copying bytes on some errors
//
else if ( (EOPNOTSUPP != errno) && (EXDEV != errno) ) {
err_i = errno;
ret_i = -1;
goto done3;
}
#endif
{
off_t off_i = 0;
ssize_t sen_i;
size_t len_i;
{
struct stat sat_u;
if ( -1 == fstat(src_i, &sat_u) ) {
err_i = errno;
ret_i = -1;
goto done3;
}
len_i = sat_u.st_size;
}
do {
// XX fallback on any errors?
//
if ( 0 > (sen_i = sendfile64(dst_i, src_i, &off_i, len_i)) ) {
err_i = errno;
ret_i = -1;
goto done3;
}
len_i -= off_i;
}
while ( len_i );
ret_i = 0;
goto done3;
}
#elif defined(U3_OS_osx)
if ( !fcopyfile(src_i, dst_i, NULL, COPYFILE_ALL) ) {
ret_i = 0;
goto done3;
}
// XX fallback on any errors?
//
#endif
{
size_t pag_i = 1 << 14;;
c3_y* buf_y = c3_malloc(pag_i);
ret_i = _king_copy_raw(src_i, dst_i, buf_y, pag_i);
err_i = errno;
c3_free(buf_y);
}
done3:
close(dst_i);
done2:
close(src_i);
done1:
errno = err_i;
return ret_i;
}
}
/* _king_copy_vere(): copy current binary into $pier/.bin (COW if possible)
*/
static c3_i
_king_link_vere(c3_c* pac_c, c3_c* ver_c, c3_c* arc_c, c3_t lin_t)
_king_copy_vere(c3_c* pac_c, c3_c* ver_c, c3_c* arc_c, c3_t lin_t)
{
c3_c* bin_c;
c3_i ret_i;
@ -1175,10 +1325,10 @@ _king_link_vere(c3_c* pac_c, c3_c* ver_c, c3_c* arc_c, c3_t lin_t)
u3_Host.dir_c, pac_c, ver_c, arc_c);
c3_assert( ret_i > 0 );
ret_i = link(u3_Host.dem_c, bin_c);
ret_i = _king_copy_file(u3_Host.dem_c, bin_c);
if ( ret_i ) {
fprintf(stderr, "vere: link %s -> %s failed: %s\n",
fprintf(stderr, "vere: copy %s -> %s failed: %s\r\n",
bin_c, u3_Host.dem_c, strerror(errno));
c3_free(bin_c);
return -1;
@ -1224,10 +1374,10 @@ _king_do_upgrade(c3_c* pac_c, c3_c* ver_c)
#endif
}
/* _king_do_link(): link binary into pier on boot.
/* _king_do_copy(): copy binary into pier on boot.
*/
static void
_king_do_link(c3_c* pac_c)
_king_do_copy(c3_c* pac_c)
{
#ifdef U3_OS_ARCH
# ifdef U3_OS_mingw
@ -1238,13 +1388,13 @@ _king_do_link(c3_c* pac_c)
// XX get link option
//
if ( _king_link_vere(pac_c, URBIT_VERSION, arc_c, 1) ) {
u3l_log("vere: link failed\r\n");
if ( _king_copy_vere(pac_c, URBIT_VERSION, arc_c, 1) ) {
u3l_log("vere: binary copy failed\r\n");
u3_king_bail();
exit(1);
}
else {
u3l_log("vere: link succeeded\r\n");
u3l_log("vere: binary copy succeeded\r\n");
// XX print restart instructions
}
#endif
@ -1257,6 +1407,8 @@ u3_king_done(void)
{
uv_handle_t* han_u = (uv_handle_t*)&u3K.tim_u;
// get next binary
//
if ( c3y == u3_Host.ops_u.nex ) {
c3_c* pac_c;
c3_c* ver_c;
@ -1288,6 +1440,8 @@ u3_king_done(void)
c3_free(ver_c);
}
// copy binary into pier on boot
//
if ( c3y == u3_Host.ops_u.nuu ) {
c3_c* pac_c;
@ -1296,7 +1450,7 @@ u3_king_done(void)
u3_Host.ops_u.nuu = c3n;
pac_c = _king_get_pace();
_king_do_link(pac_c);
_king_do_copy(pac_c);
c3_free(pac_c);
}