1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*-
* Copyright 2008 Colin Percival
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "bsdtar_platform.h"
__FBSDID("$FreeBSD$");
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "bsdtar.h"
/* Is there a pending SIGINFO or SIGUSR1? */
static volatile sig_atomic_t siginfo_received = 0;
struct siginfo_data {
/* What sort of operation are we doing? */
char * oper;
/* What path are we handling? */
char * path;
/* How large is the archive entry? */
int64_t size;
/* Old signal handlers. */
#ifdef SIGINFO
void (*siginfo_old)(int);
#endif
void (*sigusr1_old)(int);
};
static void siginfo_handler(int sig);
/* Handler for SIGINFO / SIGUSR1. */
static void
siginfo_handler(int sig)
{
(void)sig; /* UNUSED */
/* Record that SIGINFO or SIGUSR1 has been received. */
siginfo_received = 1;
}
void
siginfo_init(struct bsdtar *bsdtar)
{
/* Allocate space for internal structure. */
if ((bsdtar->siginfo = malloc(sizeof(struct siginfo_data))) == NULL)
bsdtar_errc(bsdtar, 1, errno, "malloc failed");
/* Set the strings to NULL so that free() is safe. */
bsdtar->siginfo->path = bsdtar->siginfo->oper = NULL;
#ifdef SIGINFO
/* We want to catch SIGINFO, if it exists. */
bsdtar->siginfo->siginfo_old = signal(SIGINFO, siginfo_handler);
#endif
#ifdef SIGUSR1
/* ... and treat SIGUSR1 the same way as SIGINFO. */
bsdtar->siginfo->sigusr1_old = signal(SIGUSR1, siginfo_handler);
#endif
}
void
siginfo_setinfo(struct bsdtar *bsdtar, const char * oper, const char * path,
int64_t size)
{
/* Free old operation and path strings. */
free(bsdtar->siginfo->oper);
free(bsdtar->siginfo->path);
/* Duplicate strings and store entry size. */
if ((bsdtar->siginfo->oper = strdup(oper)) == NULL)
bsdtar_errc(bsdtar, 1, errno, "Cannot strdup");
if ((bsdtar->siginfo->path = strdup(path)) == NULL)
bsdtar_errc(bsdtar, 1, errno, "Cannot strdup");
bsdtar->siginfo->size = size;
}
void
siginfo_printinfo(struct bsdtar *bsdtar, off_t progress)
{
/* If there's a signal to handle and we know what we're doing... */
if ((siginfo_received == 1) &&
(bsdtar->siginfo->path != NULL) &&
(bsdtar->siginfo->oper != NULL)) {
if (bsdtar->verbose)
fprintf(stderr, "\n");
if (bsdtar->siginfo->size > 0) {
safe_fprintf(stderr, "%s %s (%ju / %" PRId64 ")",
bsdtar->siginfo->oper, bsdtar->siginfo->path,
(uintmax_t)progress, bsdtar->siginfo->size);
} else {
safe_fprintf(stderr, "%s %s",
bsdtar->siginfo->oper, bsdtar->siginfo->path);
}
if (!bsdtar->verbose)
fprintf(stderr, "\n");
siginfo_received = 0;
}
}
void
siginfo_done(struct bsdtar *bsdtar)
{
#ifdef SIGINFO
/* Restore old SIGINFO handler. */
signal(SIGINFO, bsdtar->siginfo->siginfo_old);
#endif
#ifdef SIGUSR1
/* And the old SIGUSR1 handler, too. */
signal(SIGUSR1, bsdtar->siginfo->sigusr1_old);
#endif
/* Free strings. */
free(bsdtar->siginfo->path);
free(bsdtar->siginfo->oper);
/* Free internal data structure. */
free(bsdtar->siginfo);
}
|
