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Refer to ZED's scripts as ZEDLETs

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The executables invoked by the ZED in response to a given zevent
have been generically referred to as "scripts".  By convention,
these scripts have aimed to be /bin/sh compatible for reasons of
portability and comprehensibility.  However, the ZED only requires
they be executable and (ideally) capable of reading environment
variables.  As such, these scripts are now referred to as ZEDLETs
(ZFS Event Daemon Linkage for Executable Tasks).

Signed-off-by: Chris Dunlap <cdunlap@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #2735
This commit is contained in:
Chris Dunlap
2014-09-19 11:10:28 -07:00
committed by Brian Behlendorf
parent 8cb8cf91df
commit dcca723ace
14 changed files with 93 additions and 92 deletions
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cmd/zed/zed_conf.c
+27 -27
View File
@@ -58,7 +58,7 @@ zed_conf_create(void)
zcp->syslog_facility = LOG_DAEMON;
zcp->min_events = ZED_MIN_EVENTS;
zcp->max_events = ZED_MAX_EVENTS;
zcp->scripts = NULL; /* created via zed_conf_scan_dir() */
zcp->zedlets = NULL; /* created via zed_conf_scan_dir() */
zcp->state_fd = -1; /* opened via zed_conf_open_state() */
zcp->zfs_hdl = NULL; /* opened via zed_event_init() */
zcp->zevent_fd = -1; /* opened via zed_event_init() */
@@ -69,7 +69,7 @@ zed_conf_create(void)
if (!(zcp->pid_file = strdup(ZED_PID_FILE)))
goto nomem;
if (!(zcp->script_dir = strdup(ZED_SCRIPT_DIR)))
if (!(zcp->zedlet_dir = strdup(ZED_ZEDLET_DIR)))
goto nomem;
if (!(zcp->state_file = strdup(ZED_STATE_FILE)))
@@ -111,14 +111,14 @@ zed_conf_destroy(struct zed_conf *zcp)
if (zcp->pid_file)
free(zcp->pid_file);
if (zcp->script_dir)
free(zcp->script_dir);
if (zcp->zedlet_dir)
free(zcp->zedlet_dir);
if (zcp->state_file)
free(zcp->state_file);
if (zcp->scripts)
zed_strings_destroy(zcp->scripts);
if (zcp->zedlets)
zed_strings_destroy(zcp->zedlets);
free(zcp);
}
@@ -161,7 +161,7 @@ _zed_conf_display_help(const char *prog, int got_err)
"Read configuration from FILE.", ZED_CONF_FILE);
#endif
fprintf(fp, "%*c%*s %s [%s]\n", w1, 0x20, -w2, "-d DIR",
"Read enabled scripts from DIR.", ZED_SCRIPT_DIR);
"Read enabled ZEDLETs from DIR.", ZED_ZEDLET_DIR);
fprintf(fp, "%*c%*s %s [%s]\n", w1, 0x20, -w2, "-p FILE",
"Write daemon's PID to FILE.", ZED_PID_FILE);
fprintf(fp, "%*c%*s %s [%s]\n", w1, 0x20, -w2, "-s FILE",
@@ -269,7 +269,7 @@ zed_conf_parse_opts(struct zed_conf *zcp, int argc, char **argv)
_zed_conf_parse_path(&zcp->conf_file, optarg);
break;
case 'd':
_zed_conf_parse_path(&zcp->script_dir, optarg);
_zed_conf_parse_path(&zcp->zedlet_dir, optarg);
break;
case 'p':
_zed_conf_parse_path(&zcp->pid_file, optarg);
@@ -318,19 +318,19 @@ zed_conf_parse_file(struct zed_conf *zcp)
}
/*
* Scan the [zcp] script_dir for files to exec based on the event class.
* Scan the [zcp] zedlet_dir for files to exec based on the event class.
* Files must be executable by user, but not writable by group or other.
* Dotfiles are ignored.
*
* Return 0 on success with an updated set of scripts,
* Return 0 on success with an updated set of zedlets,
* or -1 on error with errno set.
*
* FIXME: Check if script_dir and all parent dirs are secure.
* FIXME: Check if zedlet_dir and all parent dirs are secure.
*/
int
zed_conf_scan_dir(struct zed_conf *zcp)
{
zed_strings_t *scripts;
zed_strings_t *zedlets;
DIR *dirp;
struct dirent *direntp;
char pathname[PATH_MAX];
@@ -339,23 +339,23 @@ zed_conf_scan_dir(struct zed_conf *zcp)
if (!zcp) {
errno = EINVAL;
zed_log_msg(LOG_ERR, "Failed to scan script dir: %s",
zed_log_msg(LOG_ERR, "Failed to scan zedlet dir: %s",
strerror(errno));
return (-1);
}
scripts = zed_strings_create();
if (!scripts) {
zedlets = zed_strings_create();
if (!zedlets) {
errno = ENOMEM;
zed_log_msg(LOG_WARNING, "Failed to scan dir \"%s\": %s",
zcp->script_dir, strerror(errno));
zcp->zedlet_dir, strerror(errno));
return (-1);
}
dirp = opendir(zcp->script_dir);
dirp = opendir(zcp->zedlet_dir);
if (!dirp) {
int errno_bak = errno;
zed_log_msg(LOG_WARNING, "Failed to open dir \"%s\": %s",
zcp->script_dir, strerror(errno));
zed_strings_destroy(scripts);
zcp->zedlet_dir, strerror(errno));
zed_strings_destroy(zedlets);
errno = errno_bak;
return (-1);
}
@@ -364,7 +364,7 @@ zed_conf_scan_dir(struct zed_conf *zcp)
continue;
n = snprintf(pathname, sizeof (pathname),
"%s/%s", zcp->script_dir, direntp->d_name);
"%s/%s", zcp->zedlet_dir, direntp->d_name);
if ((n < 0) || (n >= sizeof (pathname))) {
zed_log_msg(LOG_WARNING, "Failed to stat \"%s\": %s",
direntp->d_name, strerror(ENAMETOOLONG));
@@ -405,7 +405,7 @@ zed_conf_scan_dir(struct zed_conf *zcp)
direntp->d_name);
continue;
}
if (zed_strings_add(scripts, direntp->d_name) < 0) {
if (zed_strings_add(zedlets, direntp->d_name) < 0) {
zed_log_msg(LOG_WARNING,
"Failed to register \"%s\": %s",
direntp->d_name, strerror(errno));
@@ -413,20 +413,20 @@ zed_conf_scan_dir(struct zed_conf *zcp)
}
if (zcp->do_verbose)
zed_log_msg(LOG_INFO,
"Registered script \"%s\"", direntp->d_name);
"Registered zedlet \"%s\"", direntp->d_name);
}
if (closedir(dirp) < 0) {
int errno_bak = errno;
zed_log_msg(LOG_WARNING, "Failed to close dir \"%s\": %s",
zcp->script_dir, strerror(errno));
zed_strings_destroy(scripts);
zcp->zedlet_dir, strerror(errno));
zed_strings_destroy(zedlets);
errno = errno_bak;
return (-1);
}
if (zcp->scripts)
zed_strings_destroy(zcp->scripts);
if (zcp->zedlets)
zed_strings_destroy(zcp->zedlets);
zcp->scripts = scripts;
zcp->zedlets = zedlets;
return (0);
}