pacemaker  1.1.17-b36b869ca8
Scalable High-Availability cluster resource manager
internal.h
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1 /*
2  * Copyright (C) 2015
3  * Andrew Beekhof <andrew@beekhof.net>
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU Lesser General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18  */
19 
20 #ifndef CRM_COMMON_INTERNAL__H
21 #define CRM_COMMON_INTERNAL__H
22 
23 #include <glib.h> /* for gboolean */
24 #include <dirent.h> /* for struct dirent */
25 #include <sys/types.h> /* for uid_t and gid_t */
26 
27 #include <crm/common/logging.h>
28 
29 /* internal I/O utilities (from io.c) */
30 
31 char *generate_series_filename(const char *directory, const char *series, int sequence,
32  gboolean bzip);
33 int get_last_sequence(const char *directory, const char *series);
34 void write_last_sequence(const char *directory, const char *series, int sequence, int max);
35 int crm_chown_last_sequence(const char *directory, const char *series, uid_t uid, gid_t gid);
36 
37 gboolean crm_is_writable(const char *dir, const char *file, const char *user, const char *group,
38  gboolean need_both);
39 
40 void crm_sync_directory(const char *name);
41 
42 char *crm_read_contents(const char *filename);
43 int crm_write_sync(int fd, const char *contents);
44 
45 
46 /* internal procfs utilities (from procfs.c) */
47 
48 int crm_procfs_process_info(struct dirent *entry, char *name, int *pid);
49 int crm_procfs_pid_of(const char *name);
50 unsigned int crm_procfs_num_cores(void);
51 
52 
53 /* internal XML schema functions (from xml.c) */
54 
55 void crm_schema_init(void);
56 void crm_schema_cleanup(void);
57 
58 
59 /* internal generic string functions (from strings.c) */
60 
61 char *crm_concat(const char *prefix, const char *suffix, char join);
62 void g_hash_destroy_str(gpointer data);
63 long long crm_int_helper(const char *text, char **end_text);
64 gboolean crm_ends_with(const char *s, const char *match);
65 char *add_list_element(char *list, const char *value);
66 bool crm_compress_string(const char *data, int length, int max, char **result,
67  unsigned int *result_len);
68 
69 static inline int
70 crm_strlen_zero(const char *s)
71 {
72  return !s || *s == '\0';
73 }
74 
75 /* convenience functions for failure-related node attributes */
76 
77 #define CRM_FAIL_COUNT_PREFIX "fail-count"
78 #define CRM_LAST_FAILURE_PREFIX "last-failure"
79 
97 static inline char *
98 crm_fail_attr_name(const char *prefix, const char *rsc_id, const char *op,
99  int interval)
100 {
101  CRM_CHECK(prefix && rsc_id && op, return NULL);
102  return crm_strdup_printf("%s-%s#%s_%d", prefix, rsc_id, op, interval);
103 }
104 
105 static inline char *
106 crm_failcount_name(const char *rsc_id, const char *op, int interval)
107 {
108  return crm_fail_attr_name(CRM_FAIL_COUNT_PREFIX, rsc_id, op, interval);
109 }
110 
111 static inline char *
112 crm_lastfailure_name(const char *rsc_id, const char *op, int interval)
113 {
114  return crm_fail_attr_name(CRM_LAST_FAILURE_PREFIX, rsc_id, op, interval);
115 }
116 
117 #endif /* CRM_COMMON_INTERNAL__H */
#define CRM_CHECK(expr, failure_action)
Definition: logging.h:164
void crm_schema_init(void)
Definition: schemas.c:241
int get_last_sequence(const char *directory, const char *series)
Definition: io.c:121
#define CRM_LAST_FAILURE_PREFIX
Definition: internal.h:78
long long crm_int_helper(const char *text, char **end_text)
Definition: strings.c:80
void crm_schema_cleanup(void)
Definition: schemas.c:462
uint32_t pid
Definition: internal.h:49
char * generate_series_filename(const char *directory, const char *series, int sequence, gboolean bzip)
Definition: io.c:85
Wrappers for and extensions to libqb logging.
char * crm_read_contents(const char *filename)
Definition: io.c:394
#define CRM_FAIL_COUNT_PREFIX
Definition: internal.h:77
char * add_list_element(char *list, const char *value)
Definition: strings.c:292
gboolean crm_ends_with(const char *s, const char *match)
Definition: strings.c:242
int crm_procfs_process_info(struct dirent *entry, char *name, int *pid)
Definition: procfs.c:47
gboolean crm_is_writable(const char *dir, const char *file, const char *user, const char *group, gboolean need_both)
Definition: io.c:278
void write_last_sequence(const char *directory, const char *series, int sequence, int max)
Definition: io.c:193
bool crm_compress_string(const char *data, int length, int max, char **result, unsigned int *result_len)
Definition: strings.c:311
unsigned int crm_procfs_num_cores(void)
Definition: procfs.c:152
int crm_write_sync(int fd, const char *contents)
Definition: io.c:440
char data[0]
Definition: internal.h:58
int crm_chown_last_sequence(const char *directory, const char *series, uid_t uid, gid_t gid)
Definition: io.c:250
void crm_sync_directory(const char *name)
Definition: io.c:357
char * crm_concat(const char *prefix, const char *suffix, char join)
Definition: strings.c:32
int crm_procfs_pid_of(const char *name)
Definition: procfs.c:118
char * crm_strdup_printf(char const *format,...) __attribute__((__format__(__printf__
void g_hash_destroy_str(gpointer data)
Definition: strings.c:74