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148 lines
4.1 KiB
C
148 lines
4.1 KiB
C
/*-
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* Copyright 2008 Colin Percival
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "bsdtar_platform.h"
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__FBSDID("$FreeBSD$");
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#include <errno.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "bsdtar.h"
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/* Is there a pending SIGINFO or SIGUSR1? */
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static volatile sig_atomic_t siginfo_received = 0;
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struct siginfo_data {
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/* What sort of operation are we doing? */
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char * oper;
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/* What path are we handling? */
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char * path;
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/* How large is the archive entry? */
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int64_t size;
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/* Old signal handlers. */
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#ifdef SIGINFO
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void (*siginfo_old)(int);
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#endif
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void (*sigusr1_old)(int);
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};
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static void siginfo_handler(int sig);
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/* Handler for SIGINFO / SIGUSR1. */
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static void
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siginfo_handler(int sig)
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{
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(void)sig; /* UNUSED */
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/* Record that SIGINFO or SIGUSR1 has been received. */
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siginfo_received = 1;
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}
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void
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siginfo_init(struct bsdtar *bsdtar)
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{
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/* Allocate space for internal structure. */
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if ((bsdtar->siginfo = malloc(sizeof(struct siginfo_data))) == NULL)
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bsdtar_errc(bsdtar, 1, errno, "malloc failed");
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/* Set the strings to NULL so that free() is safe. */
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bsdtar->siginfo->path = bsdtar->siginfo->oper = NULL;
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#ifdef SIGINFO
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/* We want to catch SIGINFO, if it exists. */
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bsdtar->siginfo->siginfo_old = signal(SIGINFO, siginfo_handler);
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#endif
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/* ... and treat SIGUSR1 the same way as SIGINFO. */
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bsdtar->siginfo->sigusr1_old = signal(SIGUSR1, siginfo_handler);
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}
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void
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siginfo_setinfo(struct bsdtar *bsdtar, const char * oper, const char * path,
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int64_t size)
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{
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/* Free old operation and path strings. */
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free(bsdtar->siginfo->oper);
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free(bsdtar->siginfo->path);
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/* Duplicate strings and store entry size. */
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if ((bsdtar->siginfo->oper = strdup(oper)) == NULL)
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bsdtar_errc(bsdtar, 1, errno, "Cannot strdup");
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if ((bsdtar->siginfo->path = strdup(path)) == NULL)
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bsdtar_errc(bsdtar, 1, errno, "Cannot strdup");
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bsdtar->siginfo->size = size;
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}
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void
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siginfo_printinfo(struct bsdtar *bsdtar, off_t progress)
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{
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/* If there's a signal to handle and we know what we're doing... */
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if ((siginfo_received == 1) &&
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(bsdtar->siginfo->path != NULL) &&
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(bsdtar->siginfo->oper != NULL)) {
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if (bsdtar->verbose)
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fprintf(stderr, "\n");
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if (bsdtar->siginfo->size > 0) {
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safe_fprintf(stderr, "%s %s (%ju / %" PRId64 ")",
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bsdtar->siginfo->oper, bsdtar->siginfo->path,
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(uintmax_t)progress, bsdtar->siginfo->size);
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} else {
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safe_fprintf(stderr, "%s %s",
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bsdtar->siginfo->oper, bsdtar->siginfo->path);
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}
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if (!bsdtar->verbose)
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fprintf(stderr, "\n");
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siginfo_received = 0;
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}
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}
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void
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siginfo_done(struct bsdtar *bsdtar)
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{
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#ifdef SIGINFO
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/* Restore old SIGINFO handler. */
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signal(SIGINFO, bsdtar->siginfo->siginfo_old);
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#endif
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/* And the old SIGUSR1 handler, too. */
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signal(SIGUSR1, bsdtar->siginfo->sigusr1_old);
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/* Free strings. */
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free(bsdtar->siginfo->path);
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free(bsdtar->siginfo->oper);
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/* Free internal data structure. */
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free(bsdtar->siginfo);
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}
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