sin/samba-mirror
1
0
Fork 0
mirror of https://github.com/samba-team/samba.git synced 2025-03-27 22:50:26 +03:00
Code

ctdb-common: New function ctdb_set_helper()

Browse Source 
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Volker Lendecke <vl@samba.org>
This commit is contained in:
Martin Schwenke 2015-03-07 07:22:32 +11:00 committed by Volker Lendecke
parent c6cb2d6508
commit 89b08c0f0b
2 changed files with 62 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
ctdb/common/ctdb_util.c
View File

@ -64,6 +64,66 @@ void ctdb_die(struct ctdb_context *ctdb, const char *msg)
exit(1);
}
/* Set the path of a helper program from envvar, falling back to
* dir/file if envvar unset. type is a string to print in log
* messages. helper is assumed to point to a statically allocated
* array of size bytes, initialised to "". If file is NULL don't fall
* back if envvar is unset. If dir is NULL and envvar is unset (but
* file is not NULL) then this is an error. Returns true if helper is
* set, either previously or this time. */
bool ctdb_set_helper(const char *type, char *helper, size_t size,
const char *envvar,
const char *dir, const char *file)
{
const char *t;
struct stat st;
if (helper[0] != '\0') {
/* Already set */
return true;
}
t = getenv(envvar);
if (t != NULL) {
if (strlen(t) >= size) {
DEBUG(DEBUG_ERR,
("Unable to set %s - path too long\n", type));
return false;
}
strncpy(helper, t, size);
} else if (file == NULL) {
return false;
} else if (dir == NULL) {
DEBUG(DEBUG_ERR,
("Unable to set %s - dir is NULL\n", type));
return false;
} else {
if (snprintf(helper, size, "%s/%s", dir, file) >= size) {
DEBUG(DEBUG_ERR,
("Unable to set %s - path too long\n", type));
return false;
}
}
if (stat(helper, &st) != 0) {
DEBUG(DEBUG_ERR,
("Unable to set %s \"%s\" - %s\n",
type, helper, strerror(errno)));
return false;
}
if (!(st.st_mode & S_IXUSR)) {
DEBUG(DEBUG_ERR,
("Unable to set %s \"%s\" - not executable\n",
type, helper));
return false;
}
DEBUG(DEBUG_NOTICE,
("Set %s to \"%s\"\n", type, helper));
return true;
}
/* Invoke an external program to do some sort of tracing on the CTDB
* process. This might block for a little while. The external
* program is specified by the environment variable

2
ctdb/include/ctdb_private.h
View File

@ -722,6 +722,8 @@ struct ctdb_fetch_handle {
void ctdb_set_error(struct ctdb_context *ctdb, const char *fmt, ...) PRINTF_ATTRIBUTE(2,3);
void ctdb_fatal(struct ctdb_context *ctdb, const char *msg);
void ctdb_die(struct ctdb_context *ctdb, const char *msg);
bool ctdb_set_helper(const char *type, char *helper, size_t size,
const char *envvar, const char *dir, const char *file);
void ctdb_external_trace(void);
bool ctdb_same_address(struct ctdb_address *a1, struct ctdb_address *a2);
int ctdb_parse_address(struct ctdb_context *ctdb,