From 9a35eb15e6cc542ab5ccbf10d8b359ccf35b514a Mon Sep 17 00:00:00 2001
From: Packit Service <user-cont-team+packit-service@redhat.com>
Date: Dec 10 2020 05:44:13 +0000
Subject: rsync-3.1.3 base
---
diff --git a/acls.c b/acls.c
index 24e8cf6..8d97df6 100644
--- a/acls.c
+++ b/acls.c
@@ -31,7 +31,6 @@ extern int list_only;
extern int orig_umask;
extern int numeric_ids;
extern int inc_recurse;
-extern int protocol_version;
extern int preserve_devices;
extern int preserve_specials;
@@ -113,18 +112,6 @@ static const char *str_acl_type(SMB_ACL_TYPE_T type)
return "unknown ACL type!";
}
-#define OTHER_TYPE(t) (SMB_ACL_TYPE_ACCESS+SMB_ACL_TYPE_DEFAULT-(t))
-#define BUMP_TYPE(t) ((t = OTHER_TYPE(t)) == SMB_ACL_TYPE_DEFAULT)
-
-static int old_count_racl_entries(const rsync_acl *racl)
-{
- return racl->names.count
- + (racl->user_obj != NO_ENTRY)
- + (racl->group_obj != NO_ENTRY)
- + (racl->mask_obj != NO_ENTRY)
- + (racl->other_obj != NO_ENTRY);
-}
-
static int calc_sacl_entries(const rsync_acl *racl)
{
/* A System ACL always gets user/group/other permission entries. */
@@ -594,96 +581,6 @@ int get_acl(const char *fname, stat_x *sxp)
return 0;
}
-/* === OLD Send functions === */
-
-/* Send the ida list over the file descriptor. */
-static void old_send_ida_entries(int f, const ida_entries *idal, char tag_char)
-{
- id_access *ida;
- size_t count = idal->count;
- for (ida = idal->idas; count--; ida++) {
- if (tag_char == 'U') {
- if (!(ida->access & NAME_IS_USER))
- continue;
- add_uid(ida->id);
- } else {
- if (ida->access & NAME_IS_USER)
- continue;
- add_gid(ida->id);
- }
- write_byte(f, tag_char);
- write_byte(f, ida->access);
- write_int(f, ida->id);
- }
-}
-
-/* Send an rsync ACL over the file descriptor. */
-static void old_send_rsync_acl(int f, const rsync_acl *racl)
-{
- size_t count = old_count_racl_entries(racl);
- write_int(f, count);
- if (racl->user_obj != NO_ENTRY) {
- write_byte(f, 'u');
- write_byte(f, racl->user_obj);
- }
- old_send_ida_entries(f, &racl->names, 'U');
- if (racl->group_obj != NO_ENTRY) {
- write_byte(f, 'g');
- write_byte(f, racl->group_obj);
- }
- old_send_ida_entries(f, &racl->names, 'G');
- if (racl->mask_obj != NO_ENTRY) {
- write_byte(f, 'm');
- write_byte(f, racl->mask_obj);
- }
- if (racl->other_obj != NO_ENTRY) {
- write_byte(f, 'o');
- write_byte(f, racl->other_obj);
- }
-}
-
-/* Send the ACL from the stat_x structure down the indicated file descriptor.
- * This also frees the ACL data. */
-void old_send_acl(stat_x *sxp, int f)
-{
- SMB_ACL_TYPE_T type;
- rsync_acl *racl, *new_racl;
- item_list *racl_list;
- int ndx;
-
- type = SMB_ACL_TYPE_ACCESS;
- racl = sxp->acc_acl;
- racl_list = &access_acl_list;
- do {
- if (!racl) {
- racl = new(rsync_acl);
- if (!racl)
- out_of_memory("send_acl");
- *racl = empty_rsync_acl;
- if (type == SMB_ACL_TYPE_ACCESS) {
- rsync_acl_fake_perms(racl, sxp->st.st_mode);
- sxp->acc_acl = racl;
- } else
- sxp->def_acl = racl;
- }
-
- if ((ndx = find_matching_rsync_acl(racl, type, racl_list)) != -1) {
- write_byte(f, type == SMB_ACL_TYPE_ACCESS ? 'a' : 'd');
- write_int(f, ndx);
- } else {
- new_racl = EXPAND_ITEM_LIST(racl_list, rsync_acl, 1000);
- write_byte(f, type == SMB_ACL_TYPE_ACCESS ? 'A' : 'D');
- old_send_rsync_acl(f, racl);
- *new_racl = *racl;
- *racl = empty_rsync_acl;
- }
- racl = sxp->def_acl;
- racl_list = &default_acl_list;
- } while (BUMP_TYPE(type) && S_ISDIR(sxp->st.st_mode));
-
- free_acl(sxp);
-}
-
/* === Send functions === */
/* Send the ida list over the file descriptor. */
@@ -759,11 +656,6 @@ static void send_rsync_acl(int f, rsync_acl *racl, SMB_ACL_TYPE_T type,
* This also frees the ACL data. */
void send_acl(int f, stat_x *sxp)
{
- if (protocol_version < 30) {
- old_send_acl(sxp, f);
- return;
- }
-
if (!sxp->acc_acl) {
sxp->acc_acl = create_racl();
rsync_acl_fake_perms(sxp->acc_acl, sxp->st.st_mode);
@@ -781,160 +673,6 @@ void send_acl(int f, stat_x *sxp)
}
}
-/* === OLD Receive functions */
-
-static void old_recv_rsync_acl(rsync_acl *racl, int f)
-{
- static item_list temp_ida_list = EMPTY_ITEM_LIST;
- SMB_ACL_TAG_T tag_type = 0;
- uchar computed_mask_bits = 0;
- id_access *ida;
- size_t count;
-
- if (!(count = read_int(f)))
- return;
-
- while (count--) {
- char tag = read_byte(f);
- uchar access = read_byte(f);
- if (access & ~ (4 | 2 | 1)) {
- rprintf(FERROR, "old_recv_rsync_acl: bogus permset %o\n",
- access);
- exit_cleanup(RERR_STREAMIO);
- }
- switch (tag) {
- case 'u':
- if (racl->user_obj != NO_ENTRY) {
- rprintf(FERROR, "old_recv_rsync_acl: error: duplicate USER_OBJ entry\n");
- exit_cleanup(RERR_STREAMIO);
- }
- racl->user_obj = access;
- continue;
- case 'U':
- tag_type = SMB_ACL_USER;
- break;
- case 'g':
- if (racl->group_obj != NO_ENTRY) {
- rprintf(FERROR, "old_recv_rsync_acl: error: duplicate GROUP_OBJ entry\n");
- exit_cleanup(RERR_STREAMIO);
- }
- racl->group_obj = access;
- continue;
- case 'G':
- tag_type = SMB_ACL_GROUP;
- break;
- case 'm':
- if (racl->mask_obj != NO_ENTRY) {
- rprintf(FERROR, "old_recv_rsync_acl: error: duplicate MASK entry\n");
- exit_cleanup(RERR_STREAMIO);
- }
- racl->mask_obj = access;
- continue;
- case 'o':
- if (racl->other_obj != NO_ENTRY) {
- rprintf(FERROR, "old_recv_rsync_acl: error: duplicate OTHER entry\n");
- exit_cleanup(RERR_STREAMIO);
- }
- racl->other_obj = access;
- continue;
- default:
- rprintf(FERROR, "old_recv_rsync_acl: unknown tag %c\n",
- tag);
- exit_cleanup(RERR_STREAMIO);
- }
- ida = EXPAND_ITEM_LIST(&temp_ida_list, id_access, -10);
- ida->access = access | (tag_type == SMB_ACL_USER ? NAME_IS_USER : 0);
- ida->id = read_int(f);
- computed_mask_bits |= access;
- }
-
- /* Transfer the count id_access items out of the temp_ida_list
- * into the names ida_entries list in racl. */
- if (temp_ida_list.count) {
-#ifdef SMB_ACL_NEED_SORT
- if (temp_ida_list.count > 1) {
- qsort(temp_ida_list.items, temp_ida_list.count,
- sizeof (id_access), id_access_sorter);
- }
-#endif
- if (!(racl->names.idas = new_array(id_access, temp_ida_list.count)))
- out_of_memory("unpack_smb_acl");
- memcpy(racl->names.idas, temp_ida_list.items,
- temp_ida_list.count * sizeof (id_access));
- } else
- racl->names.idas = NULL;
-
- racl->names.count = temp_ida_list.count;
-
- /* Truncate the temporary list now that its idas have been saved. */
- temp_ida_list.count = 0;
-
- if (!racl->names.count) {
- /* If we received a superfluous mask, throw it away. */
- if (racl->mask_obj != NO_ENTRY) {
- /* Mask off the group perms with it first. */
- racl->group_obj &= racl->mask_obj | NO_ENTRY;
- racl->mask_obj = NO_ENTRY;
- }
- } else if (racl->mask_obj == NO_ENTRY) /* Must be non-empty with lists. */
- racl->mask_obj = (computed_mask_bits | racl->group_obj) & 7;
-}
-
-/* Receive the ACL info the sender has included for this file-list entry. */
-void old_recv_acl(struct file_struct *file, int f)
-{
- SMB_ACL_TYPE_T type;
- item_list *racl_list;
-
- if (S_ISLNK(file->mode))
- return;
-
- type = SMB_ACL_TYPE_ACCESS;
- racl_list = &access_acl_list;
- do {
- char tag = read_byte(f);
- int ndx;
-
- if (tag == 'A' || tag == 'a') {
- if (type != SMB_ACL_TYPE_ACCESS) {
- rprintf(FERROR, "receive_acl %s: duplicate access ACL\n",
- f_name(file, NULL));
- exit_cleanup(RERR_STREAMIO);
- }
- } else if (tag == 'D' || tag == 'd') {
- if (type == SMB_ACL_TYPE_ACCESS) {
- rprintf(FERROR, "receive_acl %s: expecting access ACL; got default\n",
- f_name(file, NULL));
- exit_cleanup(RERR_STREAMIO);
- }
- } else {
- rprintf(FERROR, "receive_acl %s: unknown ACL type tag: %c\n",
- f_name(file, NULL), tag);
- exit_cleanup(RERR_STREAMIO);
- }
- if (tag == 'A' || tag == 'D') {
- acl_duo *duo_item;
- ndx = racl_list->count;
- duo_item = EXPAND_ITEM_LIST(racl_list, acl_duo, 1000);
- duo_item->racl = empty_rsync_acl;
- old_recv_rsync_acl(&duo_item->racl, f);
- duo_item->sacl = NULL;
- } else {
- ndx = read_int(f);
- if (ndx < 0 || (size_t)ndx >= racl_list->count) {
- rprintf(FERROR, "receive_acl %s: %s ACL index %d out of range\n",
- f_name(file, NULL), str_acl_type(type), ndx);
- exit_cleanup(RERR_STREAMIO);
- }
- }
- if (type == SMB_ACL_TYPE_ACCESS)
- F_ACL(file) = ndx;
- else
- F_DIR_DEFACL(file) = ndx;
- racl_list = &default_acl_list;
- } while (BUMP_TYPE(type) && S_ISDIR(file->mode));
-}
-
/* === Receive functions === */
static uint32 recv_acl_access(int f, uchar *name_follows_ptr)
@@ -1056,11 +794,6 @@ static int recv_rsync_acl(int f, item_list *racl_list, SMB_ACL_TYPE_T type, mode
/* Receive the ACL info the sender has included for this file-list entry. */
void receive_acl(int f, struct file_struct *file)
{
- if (protocol_version < 30) {
- old_recv_acl(file, f);
- return;
- }
-
F_ACL(file) = recv_rsync_acl(f, &access_acl_list, SMB_ACL_TYPE_ACCESS, file->mode);
if (S_ISDIR(file->mode))
diff --git a/compat.c b/compat.c
index 627c520..8d755c6 100644
--- a/compat.c
+++ b/compat.c
@@ -205,6 +205,20 @@ void setup_protocol(int f_out,int f_in)
if (protocol_version < 30) {
if (append_mode == 1)
append_mode = 2;
+ if (preserve_acls && !local_server) {
+ rprintf(FERROR,
+ "--acls requires protocol 30 or higher"
+ " (negotiated %d).\n",
+ protocol_version);
+ exit_cleanup(RERR_PROTOCOL);
+ }
+ if (preserve_xattrs && !local_server) {
+ rprintf(FERROR,
+ "--xattrs requires protocol 30 or higher"
+ " (negotiated %d).\n",
+ protocol_version);
+ exit_cleanup(RERR_PROTOCOL);
+ }
}
if (delete_mode && !(delete_before+delete_during+delete_after)) {
diff --git a/generator.c b/generator.c
index 13c3caf..a112da6 100644
--- a/generator.c
+++ b/generator.c
@@ -39,7 +39,6 @@ extern int preserve_acls;
extern int preserve_xattrs;
extern int preserve_links;
extern int preserve_devices;
-extern int copy_devices;
extern int preserve_specials;
extern int preserve_hard_links;
extern int preserve_executability;
@@ -1658,7 +1657,7 @@ static void recv_generator(char *fname, struct file_struct *file, int ndx,
goto cleanup;
}
- if (!(S_ISREG(file->mode) || (copy_devices && IS_DEVICE(file->mode)))) {
+ if (!S_ISREG(file->mode)) {
if (solo_file)
fname = f_name(file, NULL);
rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
diff --git a/options.c b/options.c
index 195672e..1c5b42d 100644
--- a/options.c
+++ b/options.c
@@ -50,7 +50,6 @@ int append_mode = 0;
int keep_dirlinks = 0;
int copy_dirlinks = 0;
int copy_links = 0;
-int copy_devices = 0;
int preserve_links = 0;
int preserve_hard_links = 0;
int preserve_acls = 0;
@@ -706,7 +705,6 @@ void usage(enum logcode F)
rprintf(F," -o, --owner preserve owner (super-user only)\n");
rprintf(F," -g, --group preserve group\n");
rprintf(F," --devices preserve device files (super-user only)\n");
- rprintf(F," --copy-devices copy device contents as regular file\n");
rprintf(F," --specials preserve special files\n");
rprintf(F," -D same as --devices --specials\n");
rprintf(F," -t, --times preserve modification times\n");
@@ -889,7 +887,6 @@ static struct poptOption long_options[] = {
{"no-D", 0, POPT_ARG_NONE, 0, OPT_NO_D, 0, 0 },
{"devices", 0, POPT_ARG_VAL, &preserve_devices, 1, 0, 0 },
{"no-devices", 0, POPT_ARG_VAL, &preserve_devices, 0, 0, 0 },
- {"copy-devices", 0, POPT_ARG_NONE, ©_devices, 0, 0, 0 },
{"specials", 0, POPT_ARG_VAL, &preserve_specials, 1, 0, 0 },
{"no-specials", 0, POPT_ARG_VAL, &preserve_specials, 0, 0, 0 },
{"links", 'l', POPT_ARG_VAL, &preserve_links, 1, 0, 0 },
@@ -2800,9 +2797,6 @@ void server_options(char **args, int *argc_p)
else if (remove_source_files)
args[ac++] = "--remove-sent-files";
- if (copy_devices)
- args[ac++] = "--copy-devices";
-
if (preallocate_files && am_sender)
args[ac++] = "--preallocate";
diff --git a/proto.h b/proto.h
index a21f39a..1753f61 100644
--- a/proto.h
+++ b/proto.h
@@ -3,9 +3,7 @@
int allow_access(const char *addr, const char **host_ptr, int i);
void free_acl(stat_x *sxp);
int get_acl(const char *fname, stat_x *sxp);
-void old_send_acl(stat_x *sxp, int f);
void send_acl(int f, stat_x *sxp);
-void old_recv_acl(struct file_struct *file, int f);
void receive_acl(int f, struct file_struct *file);
void cache_tmp_acl(struct file_struct *file, stat_x *sxp);
void uncache_tmp_acls(void);
diff --git a/rsync.1 b/rsync.1
index 6cabd44..c11c02a 100644
--- a/rsync.1
+++ b/rsync.1
@@ -445,7 +445,6 @@ to the detailed description below for a complete description.
\-o, \-\-owner preserve owner (super\-user only)
\-g, \-\-group preserve group
\-\-devices preserve device files (super\-user only)
- \-\-copy-devices copy device contents as regular file
\-\-specials preserve special files
\-D same as \-\-devices \-\-specials
\-t, \-\-times preserve modification times
diff --git a/rsync.c b/rsync.c
index ff761c0..a0b948d 100644
--- a/rsync.c
+++ b/rsync.c
@@ -33,7 +33,6 @@ extern int preserve_xattrs;
extern int preserve_perms;
extern int preserve_executability;
extern int preserve_times;
-extern int copy_devices;
extern int am_root;
extern int am_server;
extern int am_daemon;
@@ -411,8 +410,7 @@ int read_ndx_and_attrs(int f_in, int f_out, int *iflag_ptr, uchar *type_ptr,
if (iflags & ITEM_TRANSFER) {
int i = ndx - cur_flist->ndx_start;
- struct file_struct *file = cur_flist->files[i];
- if (i < 0 || !(S_ISREG(file->mode) || (copy_devices && IS_DEVICE(file->mode)))) {
+ if (i < 0 || !S_ISREG(cur_flist->files[i]->mode)) {
rprintf(FERROR,
"received request to transfer non-regular file: %d [%s]\n",
ndx, who_am_i());
diff --git a/sender.c b/sender.c
index 9d33853..03e4aad 100644
--- a/sender.c
+++ b/sender.c
@@ -365,20 +365,6 @@ void send_files(int f_in, int f_out)
exit_cleanup(RERR_FILEIO);
}
- /* On Matt's computer, st_size is falsely 0 for most devices.
- * If this happens, try harder to determine the actual device size. */
- if (IS_DEVICE(st.st_mode) && st.st_size == 0) {
- OFF_T off = lseek(fd, 0, SEEK_END);
- if (off == (OFF_T) -1)
- rsyserr(FERROR, errno, "failed to seek to end of %s to determine size", fname);
- else {
- st.st_size = off;
- off = lseek(fd, 0, SEEK_SET);
- if (off != 0)
- rsyserr(FERROR, errno, "failed to seek back to beginning of %s to read it", fname);
- }
- }
-
if (st.st_size) {
int32 read_size = MAX(s->blength * 3, MAX_MAP_SIZE);
mbuf = map_file(fd, st.st_size, read_size, s->blength);
diff --git a/xattrs.c b/xattrs.c
index 0c7db2e..5daef62 100644
--- a/xattrs.c
+++ b/xattrs.c
@@ -22,7 +22,6 @@
#include "rsync.h"
#include "ifuncs.h"
#include "inums.h"
-#include "io.h"
#include "lib/sysxattrs.h"
#ifdef SUPPORT_XATTRS
@@ -39,7 +38,6 @@ extern int preserve_devices;
extern int preserve_specials;
extern int checksum_seed;
extern int saw_xattr_filter;
-extern int protocol_version;
#define RSYNC_XAL_INITIAL 5
#define RSYNC_XAL_LIST_INITIAL 100
@@ -276,7 +274,7 @@ static int rsync_xal_get(const char *fname, item_list *xalp)
if (!(ptr = get_xattr_data(fname, name, &datum_len, 0)))
return -1;
- if (datum_len > MAX_FULL_DATUM && protocol_version >= 30) {
+ if (datum_len > MAX_FULL_DATUM) {
/* For large datums, we store a flag and a checksum. */
name_offset = 1 + MAX_DIGEST_LEN;
sum_init(-1, checksum_seed);
@@ -442,7 +440,7 @@ static int find_matching_xattr(const item_list *xalp)
|| rxas1[j].datum_len != rxas2[j].datum_len
|| strcmp(rxas1[j].name, rxas2[j].name))
break;
- if (rxas1[j].datum_len > MAX_FULL_DATUM && protocol_version >= 30) {
+ if (rxas1[j].datum_len > MAX_FULL_DATUM) {
if (memcmp(rxas1[j].datum + 1,
rxas2[j].datum + 1,
MAX_DIGEST_LEN) != 0)
@@ -517,22 +515,13 @@ int send_xattr(int f, stat_x *sxp)
{
int ndx = find_matching_xattr(sxp->xattr);
- if (protocol_version < 30) {
- if (ndx < 0)
- write_byte(f, 'X');
- else {
- write_byte(f, 'x');
- write_int(f, ndx);
- }
- } else {
- /* Send 0 (-1 + 1) to indicate that literal xattr data follows. */
- write_varint(f, ndx + 1);
- }
+ /* Send 0 (-1 + 1) to indicate that literal xattr data follows. */
+ write_varint(f, ndx + 1);
if (ndx < 0) {
rsync_xa *rxa;
int count = sxp->xattr->count;
- write_varint30(f, count);
+ write_varint(f, count);
for (rxa = sxp->xattr->items; count--; rxa++) {
size_t name_len = rxa->name_len;
const char *name = rxa->name;
@@ -551,8 +540,8 @@ int send_xattr(int f, stat_x *sxp)
name_len += UPRE_LEN;
}
#endif
- write_varint30(f, name_len);
- write_varint30(f, rxa->datum_len);
+ write_varint(f, name_len);
+ write_varint(f, rxa->datum_len);
#ifndef HAVE_LINUX_XATTRS
if (name_len > rxa->name_len) {
write_buf(f, USER_PREFIX, UPRE_LEN);
@@ -560,7 +549,7 @@ int send_xattr(int f, stat_x *sxp)
}
#endif
write_buf(f, name, name_len);
- if (rxa->datum_len > MAX_FULL_DATUM && protocol_version >= 30)
+ if (rxa->datum_len > MAX_FULL_DATUM)
write_buf(f, rxa->datum + 1, MAX_DIGEST_LEN);
else
write_bigbuf(f, rxa->datum, rxa->datum_len);
@@ -611,7 +600,7 @@ int xattr_diff(struct file_struct *file, stat_x *sxp, int find_all)
cmp = rec_cnt ? strcmp(snd_rxa->name, rec_rxa->name) : -1;
if (cmp > 0)
same = 0;
- else if (snd_rxa->datum_len > MAX_FULL_DATUM && protocol_version >= 30) {
+ else if (snd_rxa->datum_len > MAX_FULL_DATUM) {
same = cmp == 0 && snd_rxa->datum_len == rec_rxa->datum_len
&& memcmp(snd_rxa->datum + 1, rec_rxa->datum + 1,
MAX_DIGEST_LEN) == 0;
@@ -657,9 +646,6 @@ void send_xattr_request(const char *fname, struct file_struct *file, int f_out)
int cnt, prior_req = 0;
rsync_xa *rxa;
- if (protocol_version < 30)
- return;
-
glst += F_XATTR(file);
lst = &glst->xa_items;
@@ -719,9 +705,6 @@ int recv_xattr_request(struct file_struct *file, int f_in)
rsync_xa *rxa;
int rel_pos, cnt, num, got_xattr_data = 0;
- if (protocol_version < 30)
- return 0;
-
if (F_XATTR(file) < 0) {
rprintf(FERROR, "recv_xattr_request: internal data error!\n");
exit_cleanup(RERR_PROTOCOL);
@@ -808,22 +791,7 @@ void receive_xattr(int f, struct file_struct *file)
#else
int need_sort = 1;
#endif
- int ndx;
-
- if (protocol_version >= 30)
- ndx = read_varint(f);
- else {
- int tag = read_byte(f);
- if (tag == 'x')
- ndx = read_int(f) + 1;
- else if (tag == 'X')
- ndx = 0;
- else {
- rprintf(FERROR, "receive_xattr: unknown extended attribute"
- " type tag (%02x) for %s\n", tag, f_name(file, NULL));
- exit_cleanup(RERR_STREAMIO);
- }
- }
+ int ndx = read_varint(f);
if (ndx < 0 || (size_t)ndx > rsync_xal_l.count) {
rprintf(FERROR, "receive_xattr: xa index %d out of"
@@ -836,7 +804,7 @@ void receive_xattr(int f, struct file_struct *file)
return;
}
- if ((count = read_varint30(f)) != 0) {
+ if ((count = read_varint(f)) != 0) {
(void)EXPAND_ITEM_LIST(&temp_xattr, rsync_xa, count);
temp_xattr.count = 0;
}
@@ -844,10 +812,9 @@ void receive_xattr(int f, struct file_struct *file)
for (num = 1; num <= count; num++) {
char *ptr, *name;
rsync_xa *rxa;
- size_t name_len = read_varint30(f);
- size_t datum_len = read_varint30(f);
- size_t dget_len = datum_len > MAX_FULL_DATUM && protocol_version >= 30
- ? 1 + MAX_DIGEST_LEN : datum_len;
+ size_t name_len = read_varint(f);
+ size_t datum_len = read_varint(f);
+ size_t dget_len = datum_len > MAX_FULL_DATUM ? 1 + MAX_DIGEST_LEN : datum_len;
size_t extra_len = MIGHT_NEED_RPRE ? RPRE_LEN : 0;
if ((dget_len + extra_len < dget_len)
|| (dget_len + extra_len + name_len < dget_len + extra_len))