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From: mornfall@sourceware.org To: lvm-devel@redhat.com, lvm2-cvs@sourceware.org Subject: LVM2/daemons common/daemon-shared.c common/dae ... Date: Mon, 27 Jun 2011 13:15:00 -0000 [thread overview] Message-ID: <20110627131550.12647.qmail@sourceware.org> (raw) CVSROOT: /cvs/lvm2 Module name: LVM2 Changes by: mornfall@sourceware.org 2011-06-27 13:15:49 Modified files: daemons/common : daemon-shared.c daemon-shared.h daemons/lvmetad: lvmetad-core.c testclient.c Log message: Implement daemon_send_simple and use it in the testclient. Patches: http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/daemons/common/daemon-shared.c.diff?cvsroot=lvm2&r1=1.1&r2=1.2 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/daemons/common/daemon-shared.h.diff?cvsroot=lvm2&r1=1.1&r2=1.2 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/daemons/lvmetad/lvmetad-core.c.diff?cvsroot=lvm2&r1=1.1&r2=1.2 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/daemons/lvmetad/testclient.c.diff?cvsroot=lvm2&r1=1.2&r2=1.3 --- LVM2/daemons/common/daemon-shared.c 2011/06/14 02:34:18 1.1 +++ LVM2/daemons/common/daemon-shared.c 2011/06/27 13:15:49 1.2 @@ -2,12 +2,15 @@ #include <stdio.h> #include <malloc.h> #include <string.h> +#include "daemon-shared.h" /* * Read a single message from a (socket) filedescriptor. Messages are delimited * by blank lines. This call will block until all of a message is received. The * memory will be allocated from heap. Upon error, all memory is freed and the * buffer pointer is set to NULL. + * + * See also write_buffer about blocking (read_buffer has identical behaviour). */ int read_buffer(int fd, char **buffer) { int bytes = 0; @@ -66,3 +69,43 @@ } return 0; } + +char *format_buffer(char *id, va_list ap) +{ + char *buffer, *old; + char *next; + char *format; + + dm_asprintf(&buffer, "request = \"%s\"\n", id); + if (!buffer) goto fail; + + while (next = va_arg(ap, char *)) { + old = buffer; + if (strstr(next, "%d") || strstr(next, "%s")) { + dm_asprintf(&format, "%%s%s\n", next); + if (!format) goto fail; + + if (strstr(format, "%d")) + dm_asprintf(&buffer, format, buffer, va_arg(ap, int)); + else + dm_asprintf(&buffer, format, buffer, va_arg(ap, char *)); + + dm_free(format); + dm_free(old); + if (!buffer) goto fail; + } else { + dm_asprintf(&buffer, "%s%s", buffer, next); + dm_free(old); + if (!buffer) goto fail; + } + } + + old = buffer; + dm_asprintf(&buffer, "%s\n", buffer); + dm_free(old); + + return buffer; +fail: + dm_free(buffer); + return NULL; +} --- LVM2/daemons/common/daemon-shared.h 2011/06/14 02:34:18 1.1 +++ LVM2/daemons/common/daemon-shared.h 2011/06/27 13:15:49 1.2 @@ -1,2 +1,6 @@ +#include <stdarg.h> +#include <libdevmapper.h> + int read_buffer(int fd, char **buffer); int write_buffer(int fd, char *buffer, int length); +char *format_buffer(char *id, va_list ap); --- LVM2/daemons/lvmetad/lvmetad-core.c 2011/06/14 02:36:38 1.1 +++ LVM2/daemons/lvmetad/lvmetad-core.c 2011/06/27 13:15:49 1.2 @@ -7,7 +7,7 @@ static response handler(daemon_state s, client_handle h, request r) { response res; - fprintf(stderr, "handling client request: %s\n", r.buffer); + fprintf(stderr, "---- server obtained:\n%s\n----------------------\n", r.buffer); res.error = 1; res.buffer = strdup("hey hey.\n\n"); return res; --- LVM2/daemons/lvmetad/testclient.c 2011/06/27 12:27:34 1.2 +++ LVM2/daemons/lvmetad/testclient.c 2011/06/27 13:15:49 1.3 @@ -2,10 +2,9 @@ int main() { daemon_handle h = lvmetad_open(); - daemon_request rq = { .buffer= "hello worldn\n" }; int i; for (i = 0; i < 5; ++i ) { - daemon_reply reply = daemon_send(h, rq); + daemon_reply reply = daemon_send_simple(h, "hello world", "param = %d", 3, NULL); fprintf(stderr, "daemon says: %s\n", reply.buffer); } daemon_close(h);
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