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/*-
* 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
/* ... and treat SIGUSR1 the same way as SIGINFO. */
bsdtar->siginfo->sigusr1_old = signal(SIGUSR1, siginfo_handler);
}
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
/* And the old SIGUSR1 handler, too. */
signal(SIGUSR1, bsdtar->siginfo->sigusr1_old);
/* Free strings. */
free(bsdtar->siginfo->path);
free(bsdtar->siginfo->oper);
/* Free internal data structure. */
free(bsdtar->siginfo);
}
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