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Vector Packet Processing
unix.h
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1 /*
2  * Copyright (c) 2015 Cisco and/or its affiliates.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at:
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 /*
16  * unix.h: Unix specific main state
17  *
18  * Copyright (c) 2008 Eliot Dresselhaus
19  *
20  * Permission is hereby granted, free of charge, to any person obtaining
21  * a copy of this software and associated documentation files (the
22  * "Software"), to deal in the Software without restriction, including
23  * without limitation the rights to use, copy, modify, merge, publish,
24  * distribute, sublicense, and/or sell copies of the Software, and to
25  * permit persons to whom the Software is furnished to do so, subject to
26  * the following conditions:
27  *
28  * The above copyright notice and this permission notice shall be
29  * included in all copies or substantial portions of the Software.
30  *
31  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
38  */
39 
40 #ifndef included_unix_unix_h
41 #define included_unix_unix_h
42 
43 #include <vppinfra/file.h>
44 #include <vppinfra/socket.h>
45 #include <termios.h>
46 
47 typedef struct
48 {
52 
53 typedef struct
54 {
55  /* Back pointer to main structure. */
57 
59  /* Run interactively or as daemon (background process). */
60 #define UNIX_FLAG_INTERACTIVE (1 << 0)
61 #define UNIX_FLAG_NODAEMON (1 << 1)
62 
63  /* CLI listen socket. */
65 
66  /* Circular buffer of last unix errors. */
67  unix_error_history_t error_history[128];
70 
71  /* startup-config filename */
73 
74  /* runtime directory path */
76 
77  /* pidfile filename */
79 
80  /* unix config complete */
81  volatile int unix_config_complete;
82 
83  /* CLI log file. GIGO. */
85  int log_fd;
86 
87  /* Don't put CLI connections into character mode */
89 
90  /* Maximum amount of command line history to keep per session */
92 
93  /* Suppress the welcome banner at CLI session start */
95 
96  /* Maximum pager buffer size */
98 
99  /* Suppress the pager */
101 
102  /* Store the original state of stdin when it's a tty */
103  struct termios tio_stdin;
105 } unix_main_t;
106 
107 /* Global main structure. */
108 extern unix_main_t unix_main;
110 
111 always_inline void
113 {
116  eh->error = error;
117  eh->time = vlib_time_now (um->vlib_main);
118  um->n_total_errors += 1;
119  if (++um->error_history_index >= ARRAY_LEN (um->error_history))
120  um->error_history_index = 0;
121 }
122 
123 /* Main function for Unix VLIB. */
124 int vlib_unix_main (int argc, char *argv[]);
125 
127 
128 /* Set prompt for CLI. */
129 void vlib_unix_cli_set_prompt (char *prompt);
130 
131 static inline unix_main_t *
133 {
134  return &unix_main;
135 }
136 
137 static inline char *
139 {
140  return (char *) unix_main.runtime_dir;
141 }
142 
143 /* thread stack array; vec_len = max number of threads */
144 extern u8 **vlib_thread_stacks;
145 
146 /* utils */
147 
148 clib_error_t *foreach_directory_file (char *dir_name,
149  clib_error_t * (*f) (void *arg,
150  u8 * path_name,
151  u8 * file_name),
152  void *arg, int scan_dirs);
153 
155 
157  const char *path,
158  u8 ** full_path);
159 
160 #endif /* included_unix_unix_h */
161 
162 /*
163  * fd.io coding-style-patch-verification: ON
164  *
165  * Local Variables:
166  * eval: (c-set-style "gnu")
167  * End:
168  */
u32 error_history_index
Definition: unix.h:68
unix_main_t unix_main
Definition: main.c:62
int vlib_unix_main(int argc, char *argv[])
Definition: main.c:591
u8 ** vlib_thread_stacks
Definition: main.c:557
u32 flags
Definition: unix.h:58
volatile int unix_config_complete
Definition: unix.h:81
u32 cli_pager_buffer_limit
Definition: unix.h:97
static f64 vlib_time_now(vlib_main_t *vm)
Definition: main.h:224
clib_file_main_t file_main
Definition: main.c:63
clib_socket_t cli_listen_socket
Definition: unix.h:64
int log_fd
Definition: unix.h:85
#define always_inline
Definition: clib.h:92
u8 * pidfile
Definition: unix.h:78
static char * vlib_unix_get_runtime_dir(void)
Definition: unix.h:138
static unix_main_t * vlib_unix_get_main(void)
Definition: unix.h:132
clib_error_t * unix_physmem_init(vlib_main_t *vm)
Definition: physmem.c:277
unsigned long u64
Definition: types.h:89
vlib_main_t * vlib_main
Definition: unix.h:56
void * clib_error_free_vector(clib_error_t *errors)
Definition: error.c:182
int cli_line_mode
Definition: unix.h:88
int cli_no_banner
Definition: unix.h:94
u8 * startup_config_filename
Definition: unix.h:72
u32 cli_history_limit
Definition: unix.h:91
unix_error_history_t error_history[128]
Definition: unix.h:67
int cli_no_pager
Definition: unix.h:100
#define ARRAY_LEN(x)
Definition: clib.h:59
int tio_isset
Definition: unix.h:104
unsigned int u32
Definition: types.h:88
struct _socket_t clib_socket_t
clib_error_t * vlib_unix_recursive_mkdir(char *path)
Definition: util.c:102
clib_error_t * error
Definition: unix.h:50
clib_error_t * foreach_directory_file(char *dir_name, clib_error_t *(*f)(void *arg, u8 *path_name, u8 *file_name), void *arg, int scan_dirs)
Definition: util.c:49
double f64
Definition: types.h:142
unsigned char u8
Definition: types.h:56
clib_error_t * vlib_unix_validate_runtime_file(unix_main_t *um, const char *path, u8 **full_path)
Definition: util.c:137
static void unix_save_error(unix_main_t *um, clib_error_t *error)
Definition: unix.h:112
u8 * runtime_dir
Definition: unix.h:75
void vlib_unix_cli_set_prompt(char *prompt)
Set the CLI prompt.
Definition: cli.c:2909
u8 * log_filename
Definition: unix.h:84
u64 n_total_errors
Definition: unix.h:69