svn commit: trunk/busybox: include libbb
vda at busybox.net
vda at busybox.net
Fri Aug 17 12:18:08 PDT 2007
Author: vda
Date: 2007-08-17 12:18:06 -0700 (Fri, 17 Aug 2007)
New Revision: 19544
Log:
httpd shring and logging update, part 1 or 7
text data bss dec hex filename
9836 0 0 9836 266c busybox.t1/networking/httpd.o.orig
9724 0 0 9724 25fc busybox.t2/networking/httpd.o
9657 0 0 9657 25b9 busybox.t3/networking/httpd.o
9342 0 0 9342 247e busybox.t4/networking/httpd.o
9342 0 0 9342 247e busybox.t5/networking/httpd.o
9262 0 0 9262 242e busybox.t6/networking/httpd.o
9283 0 0 9283 2443 busybox.t7/networking/httpd.o
9334 0 0 9334 2476 busybox.t8/networking/httpd.o
Modified:
trunk/busybox/include/libbb.h
trunk/busybox/libbb/verror_msg.c
Changeset:
Modified: trunk/busybox/include/libbb.h
===================================================================
--- trunk/busybox/include/libbb.h 2007-08-17 14:53:01 UTC (rev 19543)
+++ trunk/busybox/include/libbb.h 2007-08-17 19:18:06 UTC (rev 19544)
@@ -642,8 +642,8 @@
enum {
LOGMODE_NONE = 0,
- LOGMODE_STDIO = 1<<0,
- LOGMODE_SYSLOG = 1<<1,
+ LOGMODE_STDIO = (1 << 0),
+ LOGMODE_SYSLOG = (1 << 1) * ENABLE_FEATURE_SYSLOG,
LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO,
};
extern const char *msg_eol;
Modified: trunk/busybox/libbb/verror_msg.c
===================================================================
--- trunk/busybox/libbb/verror_msg.c 2007-08-17 14:53:01 UTC (rev 19543)
+++ trunk/busybox/libbb/verror_msg.c 2007-08-17 19:18:06 UTC (rev 19544)
@@ -7,45 +7,119 @@
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
+#include <syslog.h>
#include "libbb.h"
-#include <syslog.h>
smallint logmode = LOGMODE_STDIO;
const char *msg_eol = "\n";
void bb_verror_msg(const char *s, va_list p, const char* strerr)
{
- /* va_copy is used because it is not portable
- * to use va_list p twice */
- va_list p2;
- va_copy(p2, p);
+ char *msg;
+ int applet_len, strerr_len, msgeol_len, used;
+ if (!logmode)
+ return;
+
if (!s) /* nomsg[_and_die] uses NULL fmt */
s = ""; /* some libc don't like printf(NULL) */
+ used = vasprintf(&msg, s, p);
+ if (used < 0)
+ return;
+
+ /* This is ugly and costs +60 bytes compared to multiple
+ * fprintf's, but is guaranteed to do a single write.
+ * This is needed for e.g. httpd logging, when multiple
+ * children can produce log messages simultaneously. */
+
+ applet_len = strlen(applet_name) + 2; /* "applet: " */
+ strerr_len = strerr ? strlen(strerr) : 0;
+ msgeol_len = strlen(msg_eol);
+ /* +3 is for ": " before strerr and for terminating NUL */
+ msg = xrealloc(msg, applet_len + used + strerr_len + msgeol_len + 3);
+ /* TODO: maybe use writev instead of memmoving? Need full_writev? */
+ memmove(msg + applet_len, msg, used);
+ used += applet_len;
+ strcpy(msg, applet_name);
+ msg[applet_len - 2] = ':';
+ msg[applet_len - 1] = ' ';
+ if (strerr) {
+ msg[used++] = ':';
+ msg[used++] = ' ';
+ strcpy(&msg[used], strerr);
+ used += strerr_len;
+ }
+ strcpy(&msg[used], msg_eol);
+
if (logmode & LOGMODE_STDIO) {
fflush(stdout);
- fprintf(stderr, "%s: ", applet_name);
- vfprintf(stderr, s, p);
- if (!strerr)
- fputs(msg_eol, stderr);
- else
- fprintf(stderr, "%s%s%s",
- s[0] ? ": " : "",
- strerr, msg_eol);
+ full_write(2, msg, used + msgeol_len);
}
- if (ENABLE_FEATURE_SYSLOG && (logmode & LOGMODE_SYSLOG)) {
- if (!strerr)
- vsyslog(LOG_ERR, s, p2);
- else {
- char *msg;
- if (vasprintf(&msg, s, p2) < 0) {
- fprintf(stderr, "%s: %s\n", applet_name, bb_msg_memory_exhausted);
- xfunc_die();
- }
- syslog(LOG_ERR, "%s: %s", msg, strerr);
- free(msg);
- }
+ if (logmode & LOGMODE_SYSLOG) {
+ syslog(LOG_ERR, "%s", msg + applet_len);
}
- va_end(p2);
+ free(msg);
}
+
+
+#ifdef VERSION_WITH_WRITEV
+
+/* Code size is approximately the same, but currently it's the only user
+ * of writev in entire bbox. __libc_writev in uclibc is ~50 bytes. */
+
+void bb_verror_msg(const char *s, va_list p, const char* strerr)
+{
+ int strerr_len, msgeol_len;
+ struct iovec iov[3];
+
+#define used (iov[2].iov_len)
+#define msgv (iov[2].iov_base)
+#define msgc ((char*)(iov[2].iov_base))
+#define msgptr (&(iov[2].iov_base))
+
+ if (!logmode)
+ return;
+
+ if (!s) /* nomsg[_and_die] uses NULL fmt */
+ s = ""; /* some libc don't like printf(NULL) */
+
+ /* Prevent "derefing type-punned ptr will break aliasing rules" */
+ used = vasprintf((char**)(void*)msgptr, s, p);
+ if (used < 0)
+ return;
+
+ /* This is ugly and costs +60 bytes compared to multiple
+ * fprintf's, but is guaranteed to do a single write.
+ * This is needed for e.g. httpd logging, when multiple
+ * children can produce log messages simultaneously. */
+
+ strerr_len = strerr ? strlen(strerr) : 0;
+ msgeol_len = strlen(msg_eol);
+ /* +3 is for ": " before strerr and for terminating NUL */
+ msgv = xrealloc(msgv, used + strerr_len + msgeol_len + 3);
+ if (strerr) {
+ msgc[used++] = ':';
+ msgc[used++] = ' ';
+ strcpy(msgc + used, strerr);
+ used += strerr_len;
+ }
+ strcpy(msgc + used, msg_eol);
+ used += msgeol_len;
+
+ if (logmode & LOGMODE_STDIO) {
+ iov[0].iov_base = (char*)applet_name;
+ iov[0].iov_len = strlen(applet_name);
+ iov[1].iov_base = (char*)": ";
+ iov[1].iov_len = 2;
+ /*iov[2].iov_base = msgc;*/
+ /*iov[2].iov_len = used;*/
+ fflush(stdout);
+ writev(2, iov, 3);
+ }
+ if (logmode & LOGMODE_SYSLOG) {
+ syslog(LOG_ERR, "%s", msgc);
+ }
+ free(msgc);
+}
+#endif
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