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2003-01-21 Roland McGrath <roland@redhat.com>

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* strace.c (usage): Omit -z, since it has never worked properly.
	* NEWS: Likewise.
	* strace.c (main): Grok new option `-E var=val' or `-E var' to put
	var=val in environ or to remove var, respectively.
	(usage): Mention it.
	* strace.1, NEWS: Document it.
This commit is contained in:
Roland McGrath 2003-01-24 04:31:23 +00:00
parent 4417fda9ba
commit de6e53308c
2 changed files with 21 additions and 8 deletions
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4
NEWS
View File

@ -1,9 +1,9 @@
Changes in 4.4.93 TEST release
Changes in 4.4.94 TEST release
==============
* New port to AMD's x86-64 architecture. One strace binary can
handle both new x86-64 and old i386 processes.
* Fixed support for LFS64 calls.
* New switch (-z) for printing only non-failing syscalls.
* New switch -E to add/remove environment variables for the command.
* Merged s390/s390x port.
* Trace an unbounded number of processes.
* Handle numerous new system calls in Linux 2.5, and new threads semantics.

25
strace.c
View File

@ -136,8 +136,10 @@ int exitval;
{
fprintf(ofp, "\
usage: strace [-dffhiqrtttTvVxx] [-a column] [-e expr] ... [-o file]\n\
[-p pid] ... [-s strsize] [-u username] [command [arg ...]]\n\
or: strace -c [-e expr] ... [-O overhead] [-S sortby] [command [arg ...]]\n\
[-p pid] ... [-s strsize] [-u username] [-E var=val] ...\n\
[command [arg ...]]\n\
or: strace -c [-e expr] ... [-O overhead] [-S sortby] [-E var=val] ...\n\
[command [arg ...]]\n\
-c -- count time, calls, and errors for each syscall and report summary\n\
-f -- follow forks, -ff -- with output into separate files\n\
-F -- attempt to follow vforks, -h -- print help message\n\
@ -156,8 +158,12 @@ usage: strace [-dffhiqrtttTvVxx] [-a column] [-e expr] ... [-o file]\n\
-s strsize -- limit length of print strings to STRSIZE chars (default %d)\n\
-S sortby -- sort syscall counts by: time, calls, name, nothing (default %s)\n\
-u username -- run command as username handling setuid and/or setgid\n\
-E var=val -- put var=val in the environment for command\n\
-E var -- remove var from the environment for command\n\
" /* this is broken, so don't document it
-z -- print only succeeding syscalls\n\
", DEFAULT_ACOLUMN, DEFAULT_STRLEN, DEFAULT_SORTBY);
*/
, DEFAULT_ACOLUMN, DEFAULT_STRLEN, DEFAULT_SORTBY);
exit(exitval);
}
@ -200,7 +206,7 @@ char *argv[];
set_sortby(DEFAULT_SORTBY);
set_personality(DEFAULT_PERSONALITY);
while ((c = getopt(argc, argv,
"+cdfFhiqrtTvVxza:e:o:O:p:s:S:u:")) != EOF) {
"+cdfFhiqrtTvVxza:e:o:O:p:s:S:u:E:")) != EOF) {
switch (c) {
case 'c':
cflag++;
@ -260,7 +266,7 @@ char *argv[];
set_overhead(atoi(optarg));
break;
case 'p':
if ((pid = atoi(optarg)) == 0) {
if ((pid = atoi(optarg)) <= 0) {
fprintf(stderr, "%s: Invalid process id: %s\n",
progname, optarg);
break;
@ -270,7 +276,7 @@ char *argv[];
break;
}
if ((tcp = alloctcb(pid)) == NULL) {
fprintf(stderr, "%s: tcb table full, please recompile strace\n",
fprintf(stderr, "%s: out of memory\n",
progname);
exit(1);
}
@ -286,6 +292,13 @@ char *argv[];
case 'u':
username = strdup(optarg);
break;
case 'E':
if (putenv(optarg) < 0) {
fprintf(stderr, "%s: out of memory\n",
progname);
exit(1);
}
break;
default:
usage(stderr, 1);
break;