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don't hardcode buffer for getgrnam_r to 1024 bytes and increase it on ERANGE.
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@ -1,3 +1,8 @@
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Do Apr 16 16:48:51 CEST 2009 Guido Günther <agx@sigxcpu.org>
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* src/qemud.c (remoteReadConfigFile): don't hardcode buffer for
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getgrnam_r to 1024 bytes and increase it on ERANGE.
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Thu Apr 16 15:20:02 GMT 2009 Mark McLoughlin <markmc@redhat.com>
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* src/qemu_conf.c: pass "format=" to qemu -drive rather
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@ -2529,6 +2529,7 @@ remoteReadConfigFile (struct qemud_server *server, const char *filename)
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char *unix_sock_ro_perms = NULL;
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char *unix_sock_rw_perms = NULL;
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char *unix_sock_group = NULL;
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char *buf = NULL;
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#if HAVE_POLKIT
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/* Change the default back to no auth for non-root */
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@ -2574,13 +2575,34 @@ remoteReadConfigFile (struct qemud_server *server, const char *filename)
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if (getuid() != 0) {
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VIR_WARN0(_("Cannot set group when not running as root"));
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} else {
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char buf[1024];
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int ret;
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struct group grpdata, *grp;
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if (getgrnam_r(unix_sock_group, &grpdata, buf, sizeof(buf), &grp) != 0 || !grp) {
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size_t maxbuf = sysconf(_SC_GETGR_R_SIZE_MAX);
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if (maxbuf == -1)
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maxbuf = 1024;
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if (VIR_ALLOC_N(buf, maxbuf) < 0) {
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VIR_ERROR("%s", _("Failed to allocate memory for buffer"));
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goto free_and_fail;
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}
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while ((ret = getgrnam_r(unix_sock_group, &grpdata,
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buf, maxbuf,
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&grp)) == ERANGE) {
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maxbuf *= 2;
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if (maxbuf > 65536 || VIR_REALLOC_N(buf, maxbuf) < 0) {
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VIR_ERROR("%s", _("Failed to reallocate enough memory for buffer"));
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goto free_and_fail;
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}
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}
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if (ret != 0 || !grp) {
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VIR_ERROR(_("Failed to lookup group '%s'"), unix_sock_group);
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goto free_and_fail;
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}
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unix_sock_gid = grp->gr_gid;
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VIR_FREE (buf);
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}
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free (unix_sock_group);
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unix_sock_group = NULL;
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@ -2643,6 +2665,7 @@ remoteReadConfigFile (struct qemud_server *server, const char *filename)
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free (unix_sock_ro_perms);
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free (unix_sock_rw_perms);
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free (unix_sock_group);
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VIR_FREE (buf);
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/* Don't bother trying to free listen_addr, tcp_port, tls_port, key_file,
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cert_file, ca_file, or crl_file, since they are initialized to
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