diff options
| -rw-r--r-- | shell/ash.c | 7 | ||||
| -rw-r--r-- | shell/ash_test/ash-read/read_SIGCHLD.right | 2 | ||||
| -rwxr-xr-x | shell/ash_test/ash-read/read_SIGCHLD.tests | 4 | ||||
| -rw-r--r-- | shell/hush.c | 5 | ||||
| -rw-r--r-- | shell/hush_test/hush-read/read_SIGCHLD.right | 2 | ||||
| -rwxr-xr-x | shell/hush_test/hush-read/read_SIGCHLD.tests | 4 | ||||
| -rw-r--r-- | shell/shell_common.c | 20 |
7 files changed, 34 insertions, 10 deletions
diff --git a/shell/ash.c b/shell/ash.c index 70ee15e..60c8ffe 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -13268,6 +13268,7 @@ readcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM) /* "read -s" needs to save/restore termios, can't allow ^C * to jump out of it. */ + again: INT_OFF; r = shell_builtin_read(setvar0, argptr, @@ -13280,6 +13281,12 @@ readcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM) ); INT_ON; + if ((uintptr_t)r == 1 && errno == EINTR) { + /* to get SIGCHLD: sleep 1 & read x; echo $x */ + if (pending_sig == 0) + goto again; + } + if ((uintptr_t)r > 1) ash_msg_and_raise_error(r); diff --git a/shell/ash_test/ash-read/read_SIGCHLD.right b/shell/ash_test/ash-read/read_SIGCHLD.right new file mode 100644 index 0000000..b3dc7ab --- /dev/null +++ b/shell/ash_test/ash-read/read_SIGCHLD.right @@ -0,0 +1,2 @@ +x='Ok' +exitcode:0 diff --git a/shell/ash_test/ash-read/read_SIGCHLD.tests b/shell/ash_test/ash-read/read_SIGCHLD.tests new file mode 100755 index 0000000..c5f673a --- /dev/null +++ b/shell/ash_test/ash-read/read_SIGCHLD.tests @@ -0,0 +1,4 @@ +x=BAD +{ sleep 0.4; echo Ok; } | { sleep 0.2 & read x; echo "x='$x'"; } +echo "exitcode:$?" + diff --git a/shell/hush.c b/shell/hush.c index e18920f..125463a 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -9038,6 +9038,9 @@ static int FAST_FUNC builtin_type(char **argv) * - terminates shell (regardless of interactivity); * if it has non-empty trap: * - executes trap and returns to read; + * SIGCHLD from children: + * - does not interrupt read regardless of interactivity: + * try: sleep 1 & read x; echo $x */ static int FAST_FUNC builtin_read(char **argv) { @@ -9071,7 +9074,7 @@ static int FAST_FUNC builtin_read(char **argv) if ((uintptr_t)r == 1 && errno == EINTR) { unsigned sig = check_and_run_traps(); - if (sig && sig != SIGINT) + if (sig != SIGINT) goto again; } diff --git a/shell/hush_test/hush-read/read_SIGCHLD.right b/shell/hush_test/hush-read/read_SIGCHLD.right new file mode 100644 index 0000000..b3dc7ab --- /dev/null +++ b/shell/hush_test/hush-read/read_SIGCHLD.right @@ -0,0 +1,2 @@ +x='Ok' +exitcode:0 diff --git a/shell/hush_test/hush-read/read_SIGCHLD.tests b/shell/hush_test/hush-read/read_SIGCHLD.tests new file mode 100755 index 0000000..c5f673a --- /dev/null +++ b/shell/hush_test/hush-read/read_SIGCHLD.tests @@ -0,0 +1,4 @@ +x=BAD +{ sleep 0.4; echo Ok; } | { sleep 0.2 & read x; echo "x='$x'"; } +echo "exitcode:$?" + diff --git a/shell/shell_common.c b/shell/shell_common.c index fb86e68..03b7d0b 100644 --- a/shell/shell_common.c +++ b/shell/shell_common.c @@ -204,15 +204,17 @@ shell_builtin_read(void FAST_FUNC (*setvar)(const char *name, const char *val), c = buffer[bufpos]; if (c == '\0') continue; - if (backslash) { - backslash = 0; - if (c != '\n') - goto put; - continue; - } - if (!(read_flags & BUILTIN_READ_RAW) && c == '\\') { - backslash = 1; - continue; + if (!(read_flags & BUILTIN_READ_RAW)) { + if (backslash) { + backslash = 0; + if (c != '\n') + goto put; + continue; + } + if (c == '\\') { + backslash = 1; + continue; + } } if (c == '\n') break; |