[git commit] scriptreplay: new applet. +423 bytes
Denys Vlasenko
vda.linux at googlemail.com
Tue May 19 15:36:16 UTC 2009
commit: http://git.busybox.net/busybox/commit/?id=5e61115ea45c621867941e52e6ac016680415656
branch: http://git.busybox.net/busybox/commit/?id=refs/heads/master
Signed-off-by: Pascal Bellard <pascal.bellard at ads-lu.com>
Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
include/applets.h | 1 +
include/usage.h | 10 +++++++-
util-linux/Config.in | 7 +++++
util-linux/Kbuild | 1 +
util-linux/script.c | 59 +++++++++++++++++++++++++++++---------------
util-linux/scriptreplay.c | 38 +++++++++++++++++++++++++++++
6 files changed, 95 insertions(+), 21 deletions(-)
create mode 100644 util-linux/scriptreplay.c
diff --git a/include/applets.h b/include/applets.h
index 359440d..7838757 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -326,6 +326,7 @@ IF_RUNSV(APPLET(runsv, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
IF_RUNSVDIR(APPLET(runsvdir, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
IF_RX(APPLET(rx, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
IF_SCRIPT(APPLET(script, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+IF_SCRIPTREPLAY(APPLET(scriptreplay, _BB_DIR_BIN, _BB_SUID_NEVER))
IF_SED(APPLET(sed, _BB_DIR_BIN, _BB_SUID_NEVER))
IF_SELINUXENABLED(APPLET(selinuxenabled, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
IF_SENDMAIL(APPLET(sendmail, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
diff --git a/include/usage.h b/include/usage.h
index 123462a..1e327fb 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -3512,6 +3512,11 @@
"\n -g Process group id(s)" \
"\n -u Process user name(s) and/or id(s)" \
+#define scriptreplay_trivial_usage \
+ "timingfile [typescript [divisor]]"
+#define scriptreplay_full_usage "\n\n" \
+ "Play back typescripts, using timing information"
+
#define reset_trivial_usage \
""
#define reset_full_usage "\n\n" \
@@ -3706,13 +3711,16 @@
"$ rx /tmp/foo\n"
#define script_trivial_usage \
- "[-afq] [-c COMMAND] [OUTFILE]"
+ "[-afq" IF_SCRIPTREPLAY("t") "] [-c COMMAND] [OUTFILE]"
#define script_full_usage "\n\n" \
"Options:" \
"\n -a Append output" \
"\n -c Run COMMAND, not shell" \
"\n -f Flush output after each write" \
"\n -q Quiet" \
+ IF_SCRIPTREPLAY( \
+ "\n -t Send timing to stderr" \
+ )
#define sed_trivial_usage \
"[-efinr] pattern [files...]"
diff --git a/util-linux/Config.in b/util-linux/Config.in
index e5c053f..0245501 100644
--- a/util-linux/Config.in
+++ b/util-linux/Config.in
@@ -764,6 +764,13 @@ config SCRIPT
help
The script makes typescript of terminal session.
+config SCRIPTREPLAY
+ bool "scriptreplay"
+ default n
+ help
+ This program replays a typescript, using timing information
+ given by script -t.
+
config SETARCH
bool "setarch"
default n
diff --git a/util-linux/Kbuild b/util-linux/Kbuild
index ac071c6..eaad331 100644
--- a/util-linux/Kbuild
+++ b/util-linux/Kbuild
@@ -33,6 +33,7 @@ lib-$(CONFIG_RDEV) += rdev.o
lib-$(CONFIG_READPROFILE) += readprofile.o
lib-$(CONFIG_RTCWAKE) += rtcwake.o
lib-$(CONFIG_SCRIPT) += script.o
+lib-$(CONFIG_SCRIPTREPLAY) += scriptreplay.o
lib-$(CONFIG_SETARCH) += setarch.o
lib-$(CONFIG_SWAPONOFF) += swaponoff.o
lib-$(CONFIG_SWITCH_ROOT) += switch_root.o
diff --git a/util-linux/script.c b/util-linux/script.c
index a9f24b1..d16a291 100644
--- a/util-linux/script.c
+++ b/util-linux/script.c
@@ -10,16 +10,8 @@
*
* Licensed under GPLv2 or later, see file License in this tarball for details.
*/
-
#include "libbb.h"
-static smallint fd_count = 2;
-
-static void handle_sigchld(int sig UNUSED_PARAM)
-{
- fd_count = 0;
-}
-
int script_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int script_main(int argc UNUSED_PARAM, char **argv)
{
@@ -36,6 +28,15 @@ int script_main(int argc UNUSED_PARAM, char **argv)
const char *shell;
char shell_opt[] = "-i";
char *shell_arg = NULL;
+ enum {
+ OPT_a = (1 << 0),
+ OPT_c = (1 << 1),
+ OPT_f = (1 << 2),
+ OPT_q = (1 << 3),
+#if ENABLE_SCRIPTREPLAY
+ OPT_t = (1 << 4),
+#endif
+ };
#if ENABLE_GETOPT_LONG
static const char getopt_longopts[] ALIGN1 =
@@ -43,25 +44,28 @@ int script_main(int argc UNUSED_PARAM, char **argv)
"command\0" Required_argument "c"
"flush\0" No_argument "f"
"quiet\0" No_argument "q"
+# if ENABLE_SCRIPTREPLAY
+ "timing\0" No_argument "t"
+# endif
;
applet_long_options = getopt_longopts;
#endif
opt_complementary = "?1"; /* max one arg */
- opt = getopt32(argv, "ac:fq", &shell_arg);
+ opt = getopt32(argv, "ac:fq" IF_SCRIPTREPLAY("t") , &shell_arg);
//argc -= optind;
argv += optind;
if (argv[0]) {
fname = argv[0];
}
mode = O_CREAT|O_TRUNC|O_WRONLY;
- if (opt & 1) {
+ if (opt & OPT_a) {
mode = O_CREAT|O_APPEND|O_WRONLY;
}
- if (opt & 2) {
+ if (opt & OPT_c) {
shell_opt[1] = 'c';
}
- if (!(opt & 8)) { /* not -q */
+ if (!(opt & OPT_q)) {
printf("Script started, file is %s\n", fname);
}
shell = getenv("SHELL");
@@ -83,7 +87,7 @@ int script_main(int argc UNUSED_PARAM, char **argv)
/* "script" from util-linux exits when child exits,
* we wouldn't wait for EOF from slave pty
* (output may be produced by grandchildren of child) */
- signal(SIGCHLD, handle_sigchld);
+ signal(SIGCHLD, record_signo);
/* TODO: SIGWINCH? pass window size changes down to slave? */
@@ -97,19 +101,23 @@ int script_main(int argc UNUSED_PARAM, char **argv)
#define buf bb_common_bufsiz1
struct pollfd pfd[2];
int outfd, count, loop;
+#if ENABLE_SCRIPTREPLAY
+ double oldtime = time(NULL);
+#endif
+ smallint fd_count = 2;
outfd = xopen(fname, mode);
pfd[0].fd = pty;
pfd[0].events = POLLIN;
- pfd[1].fd = 0;
+ pfd[1].fd = STDIN_FILENO;
pfd[1].events = POLLIN;
ndelay_on(pty); /* this descriptor is not shared, can do this */
- /* ndelay_on(0); - NO, stdin can be shared! Pity :( */
+ /* ndelay_on(STDIN_FILENO); - NO, stdin can be shared! Pity :( */
/* copy stdin to pty master input,
* copy pty master output to stdout and file */
/* TODO: don't use full_write's, use proper write buffering */
- while (fd_count) {
+ while (fd_count && !bb_got_signal) {
/* not safe_poll! we want SIGCHLD to EINTR poll */
if (poll(pfd, fd_count, -1) < 0 && errno != EINTR) {
/* If child exits too quickly, we may get EIO:
@@ -124,9 +132,20 @@ int script_main(int argc UNUSED_PARAM, char **argv)
goto restore;
}
if (count > 0) {
+#if ENABLE_SCRIPTREPLAY
+ if (opt & OPT_t) {
+ struct timeval tv;
+ double newtime;
+
+ gettimeofday(&tv, NULL);
+ newtime = tv.tv_sec + (double) tv.tv_usec / 1000000;
+ fprintf(stderr, "%f %u\n", newtime - oldtime, count);
+ oldtime = newtime;
+ }
+#endif
full_write(STDOUT_FILENO, buf, count);
full_write(outfd, buf, count);
- if (opt & 4) { /* -f */
+ if (opt & OPT_f) {
fsync(outfd);
}
}
@@ -142,8 +161,8 @@ int script_main(int argc UNUSED_PARAM, char **argv)
}
}
}
- /* If loop was exited because SIGCHLD handler set fd_count to 0,
- * there still can be some buffered output. But not loop forever:
+ /* If loop was exited because SIGCHLD handler set bb_got_signal,
+ * there still can be some buffered output. But dont loop forever:
* we won't pump orphaned grandchildren's output indefinitely.
* Testcase: running this in script:
* exec dd if=/dev/zero bs=1M count=1
@@ -158,7 +177,7 @@ int script_main(int argc UNUSED_PARAM, char **argv)
restore:
if (attr_ok == 0)
tcsetattr(0, TCSAFLUSH, &tt);
- if (!(opt & 8)) /* not -q */
+ if (!(opt & OPT_q))
printf("Script done, file is %s\n", fname);
return EXIT_SUCCESS;
}
diff --git a/util-linux/scriptreplay.c b/util-linux/scriptreplay.c
new file mode 100644
index 0000000..038dbdf
--- /dev/null
+++ b/util-linux/scriptreplay.c
@@ -0,0 +1,38 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * scriptreplay - play back typescripts, using timing information
+ *
+ * pascal.bellard at ads-lu.com
+ *
+ * Licensed under GPLv2 or later, see file License in this tarball for details.
+ *
+ */
+#include "libbb.h"
+
+int scriptreplay_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int scriptreplay_main(int argc UNUSED_PARAM, char **argv)
+{
+ const char *script = "typescript";
+ double delay, factor = 1000000.0;
+ int fd;
+ unsigned long count;
+ FILE *tfp;
+
+ if (argv[2]) {
+ script = argv[2];
+ if (argv[3])
+ factor /= atof(argv[3]);
+ }
+
+ tfp = xfopen_for_read(argv[1]);
+ fd = xopen(script, O_RDONLY);
+ while (fscanf(tfp, "%lf %lu\n", &delay, &count) == 2) {
+ usleep(delay * factor);
+ bb_copyfd_exact_size(fd, STDOUT_FILENO, count);
+ }
+#if ENABLE_FEATURE_CLEAN_UP
+ close(fd);
+ fclose(tfp);
+#endif
+ return EXIT_SUCCESS;
+}
--
1.6.0.6
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