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authorGravatar Denys Vlasenko <vda.linux@googlemail.com>2016-10-07 17:11:04 +0200
committerGravatar Denys Vlasenko <vda.linux@googlemail.com>2016-10-07 17:11:04 +0200
commit868530ade244bf8162fb6a10816bd815b166d509 (patch)
tree874fa8d8b979ae95ca53badadfa614f0de4ed7ac
parentc3b34d8b39cae35fec8c6fb644d90dc80e574236 (diff)
downloadbusybox-868530ade244bf8162fb6a10816bd815b166d509.tar.gz
busybox-868530ade244bf8162fb6a10816bd815b166d509.tar.bz2
Apply post-1.25.0 patches, bump version to 1.25.11_25_1
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--Makefile2
-rw-r--r--archival/gzip.c5
-rw-r--r--networking/libiproute/iproute.c3
-rw-r--r--networking/ntpd.c7
-rw-r--r--shell/hush.c88
5 files changed, 72 insertions, 33 deletions
diff --git a/Makefile b/Makefile
index 572da3d88..a519f3a7e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 1
PATCHLEVEL = 25
-SUBLEVEL = 0
+SUBLEVEL = 1
EXTRAVERSION =
NAME = Unnamed
diff --git a/archival/gzip.c b/archival/gzip.c
index 8f1e4ff29..9e0bee815 100644
--- a/archival/gzip.c
+++ b/archival/gzip.c
@@ -2220,10 +2220,7 @@ int gzip_main(int argc UNUSED_PARAM, char **argv)
opt >>= ENABLE_GUNZIP ? 7 : 5; /* drop cfv[dt]qn bits */
if (opt == 0)
opt = 1 << 6; /* default: 6 */
- /* Map 1..3 to 4 */
- if (opt & 0x7)
- opt |= 1 << 4;
- opt = ffs(opt >> 3);
+ opt = ffs(opt >> 4); /* Maps -1..-4 to [0], -5 to [1] ... -9 to [5] */
max_chain_length = 1 << gzip_level_config[opt].chain_shift;
good_match = gzip_level_config[opt].good;
max_lazy_match = gzip_level_config[opt].lazy2 * 2;
diff --git a/networking/libiproute/iproute.c b/networking/libiproute/iproute.c
index e674e9a0d..48dc6e3d9 100644
--- a/networking/libiproute/iproute.c
+++ b/networking/libiproute/iproute.c
@@ -362,10 +362,9 @@ IF_FEATURE_IP_RULE(ARG_table,)
req.r.rtm_scope = RT_SCOPE_NOWHERE;
if (cmd != RTM_DELROUTE) {
+ req.r.rtm_scope = RT_SCOPE_UNIVERSE;
if (RTPROT_BOOT != 0)
req.r.rtm_protocol = RTPROT_BOOT;
- if (RT_SCOPE_UNIVERSE != 0)
- req.r.rtm_scope = RT_SCOPE_UNIVERSE;
if (RTN_UNICAST != 0)
req.r.rtm_type = RTN_UNICAST;
}
diff --git a/networking/ntpd.c b/networking/ntpd.c
index 98158a304..1a3367be2 100644
--- a/networking/ntpd.c
+++ b/networking/ntpd.c
@@ -2051,6 +2051,13 @@ recv_and_process_client_pkt(void /*int fd*/)
goto bail;
}
+ /* Respond only to client and symmetric active packets */
+ if ((msg.m_status & MODE_MASK) != MODE_CLIENT
+ && (msg.m_status & MODE_MASK) != MODE_SYM_ACT
+ ) {
+ goto bail;
+ }
+
query_status = msg.m_status;
query_xmttime = msg.m_xmttime;
diff --git a/shell/hush.c b/shell/hush.c
index eabe83ac6..dfbbb4122 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -1477,19 +1477,50 @@ static sighandler_t install_sighandler(int sig, sighandler_t handler)
return old_sa.sa_handler;
}
+static void hush_exit(int exitcode) NORETURN;
+static void fflush_and__exit(void) NORETURN;
+static void restore_ttypgrp_and__exit(void) NORETURN;
+
+static void restore_ttypgrp_and__exit(void)
+{
+ /* xfunc has failed! die die die */
+ /* no EXIT traps, this is an escape hatch! */
+ G.exiting = 1;
+ hush_exit(xfunc_error_retval);
+}
+
+/* Needed only on some libc:
+ * It was observed that on exit(), fgetc'ed buffered data
+ * gets "unwound" via lseek(fd, -NUM, SEEK_CUR).
+ * With the net effect that even after fork(), not vfork(),
+ * exit() in NOEXECed applet in "sh SCRIPT":
+ * noexec_applet_here
+ * echo END_OF_SCRIPT
+ * lseeks fd in input FILE object from EOF to "e" in "echo END_OF_SCRIPT".
+ * This makes "echo END_OF_SCRIPT" executed twice.
+ * Similar problems can be seen with die_if_script() -> xfunc_die()
+ * and in `cmd` handling.
+ * If set as die_func(), this makes xfunc_die() exit via _exit(), not exit():
+ */
+static void fflush_and__exit(void)
+{
+ fflush_all();
+ _exit(xfunc_error_retval);
+}
+
#if ENABLE_HUSH_JOB
-static void xfunc_has_died(void);
/* After [v]fork, in child: do not restore tty pgrp on xfunc death */
-# define disable_restore_tty_pgrp_on_exit() (die_func = NULL)
+# define disable_restore_tty_pgrp_on_exit() (die_func = fflush_and__exit)
/* After [v]fork, in parent: restore tty pgrp on xfunc death */
-# define enable_restore_tty_pgrp_on_exit() (die_func = xfunc_has_died)
+# define enable_restore_tty_pgrp_on_exit() (die_func = restore_ttypgrp_and__exit)
/* Restores tty foreground process group, and exits.
* May be called as signal handler for fatal signal
* (will resend signal to itself, producing correct exit state)
* or called directly with -EXITCODE.
- * We also call it if xfunc is exiting. */
+ * We also call it if xfunc is exiting.
+ */
static void sigexit(int sig) NORETURN;
static void sigexit(int sig)
{
@@ -1544,7 +1575,6 @@ static sighandler_t pick_sighandler(unsigned sig)
}
/* Restores tty foreground process group, and exits. */
-static void hush_exit(int exitcode) NORETURN;
static void hush_exit(int exitcode)
{
#if ENABLE_FEATURE_EDITING_SAVE_ON_EXIT
@@ -1580,23 +1610,14 @@ static void hush_exit(int exitcode)
}
#endif
-#if ENABLE_HUSH_JOB
fflush_all();
+#if ENABLE_HUSH_JOB
sigexit(- (exitcode & 0xff));
#else
- exit(exitcode);
+ _exit(exitcode);
#endif
}
-static void xfunc_has_died(void) NORETURN;
-static void xfunc_has_died(void)
-{
- /* xfunc has failed! die die die */
- /* no EXIT traps, this is an escape hatch! */
- G.exiting = 1;
- hush_exit(xfunc_error_retval);
-}
-
//TODO: return a mask of ALL handled sigs?
static int check_and_run_traps(void)
@@ -1766,6 +1787,7 @@ static int set_local_var(char *str, int flg_export, int local_lvl, int flg_read_
{
struct variable **var_pp;
struct variable *cur;
+ char *free_me = NULL;
char *eq_sign;
int name_len;
@@ -1782,6 +1804,7 @@ static int set_local_var(char *str, int flg_export, int local_lvl, int flg_read_
var_pp = &cur->next;
continue;
}
+
/* We found an existing var with this name */
if (cur->flg_read_only) {
#if !BB_MMU
@@ -1830,12 +1853,17 @@ static int set_local_var(char *str, int flg_export, int local_lvl, int flg_read_
strcpy(cur->varstr, str);
goto free_and_exp;
}
- } else {
- /* max_len == 0 signifies "malloced" var, which we can
- * (and has to) free */
- free(cur->varstr);
- }
- cur->max_len = 0;
+ /* Can't reuse */
+ cur->max_len = 0;
+ goto set_str_and_exp;
+ }
+ /* max_len == 0 signifies "malloced" var, which we can
+ * (and have to) free. But we can't free(cur->varstr) here:
+ * if cur->flg_export is 1, it is in the environment.
+ * We should either unsetenv+free, or wait until putenv,
+ * then putenv(new)+free(old).
+ */
+ free_me = cur->varstr;
goto set_str_and_exp;
}
@@ -1862,10 +1890,15 @@ static int set_local_var(char *str, int flg_export, int local_lvl, int flg_read_
cur->flg_export = 0;
/* unsetenv was already done */
} else {
+ int i;
debug_printf_env("%s: putenv '%s'\n", __func__, cur->varstr);
- return putenv(cur->varstr);
+ i = putenv(cur->varstr);
+ /* only now we can free old exported malloced string */
+ free(free_me);
+ return i;
}
}
+ free(free_me);
return 0;
}
@@ -5913,7 +5946,8 @@ static FILE *generate_stream_from_string(const char *s, pid_t *pid_p)
) {
static const char *const argv[] = { NULL, NULL };
builtin_trap((char**)argv);
- exit(0); /* not _exit() - we need to fflush */
+ fflush_all(); /* important */
+ _exit(0);
}
# if BB_MMU
reset_traps_to_defaults();
@@ -6466,7 +6500,8 @@ static void dump_cmd_in_x_mode(char **argv)
* Never returns.
* Don't exit() here. If you don't exec, use _exit instead.
* The at_exit handlers apparently confuse the calling process,
- * in particular stdin handling. Not sure why? -- because of vfork! (vda) */
+ * in particular stdin handling. Not sure why? -- because of vfork! (vda)
+ */
static void pseudo_exec_argv(nommu_save_t *nommu_save,
char **argv, int assignment_cnt,
char **argv_expanded) NORETURN;
@@ -7787,6 +7822,7 @@ int hush_main(int argc, char **argv)
INIT_G();
if (EXIT_SUCCESS != 0) /* if EXIT_SUCCESS == 0, it is already done */
G.last_exitcode = EXIT_SUCCESS;
+
#if ENABLE_HUSH_FAST
G.count_SIGCHLD++; /* ensure it is != G.handled_SIGCHLD */
#endif
@@ -7876,7 +7912,7 @@ int hush_main(int argc, char **argv)
/* Initialize some more globals to non-zero values */
cmdedit_update_prompt();
- die_func = xfunc_has_died;
+ die_func = restore_ttypgrp_and__exit;
/* Shell is non-interactive at first. We need to call
* install_special_sighandlers() if we are going to execute "sh <script>",