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* src/engine/gnc-book.c (gnc_book_write_to_file): remove useless

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line.
(make_backup): new func for duplicate functionality
(copy_file): new func to copy file.
(gnc_book_backup_file): use make_backup
(gnc_book_write_to_file): use make_backup


git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@4703 57a11ea4-9604-0410-9ed3-97b8803252fd
This commit is contained in:
James LewisMoss 2001-06-16 02:51:49 +00:00
parent c6d5667020
commit 8a4f29290d
1 changed files with 109 additions and 28 deletions

137
src/engine/gnc-book.c
View File

@ -326,7 +326,7 @@ gnc_book_get_file_lock (GNCBook *book)
if (rc)
{
/* If hard links aren't supported, just allow the lock. */
if (errno == EOPNOTSUPP)
if (errno == EOPNOTSUPP || errno == EPERM)
{
book->linkfile = NULL;
return TRUE;
@ -367,6 +367,30 @@ gnc_book_get_file_lock (GNCBook *book)
/* ---------------------------------------------------------------------- */
static gboolean
is_gzipped_file(const gchar *name)
{
unsigned char buf[2];
int fd = open(name, O_RDONLY);
if(fd == 0)
{
return FALSE;
}
if(read(fd, buf, 2) != 2)
{
return FALSE;
}
if(buf[0] == 037 && buf[1] == 0213)
{
return TRUE;
}
return FALSE;
}
GNCBookFileType
gnc_book_determine_file_type(GNCBook *book)
{
@ -375,6 +399,8 @@ gnc_book_determine_file_type(GNCBook *book)
return GNC_BOOK_XML2_FILE;
} else if(gnc_is_xml_data_file(name)) {
return GNC_BOOK_XML1_FILE;
} else if(is_gzipped_file(name)) {
return GNC_BOOK_XML2_FILE;
} else {
return GNC_BOOK_BIN_FILE;
}
@ -449,9 +475,85 @@ gnc_book_load_from_file(GNCBook *book)
"file.YYYYMMDDHHMMSS.xac" where YYYYMMDDHHMMSS is replaced with the
current year/month/day/hour/minute/second. */
static gboolean
copy_file(const char *orig, const char *bkup)
{
static int buf_size = 1024;
char buf[buf_size];
int orig_fd;
int bkup_fd;
ssize_t count_write;
ssize_t count_read;
orig_fd = open(orig, O_RDONLY);
if(orig_fd == -1)
{
return FALSE;
}
bkup_fd = creat(bkup, 0600);
if(bkup_fd == -1)
{
close(orig_fd);
return FALSE;
}
do
{
count_read = read(orig_fd, buf, buf_size);
if(count_read == -1 && errno != EINTR)
{
close(orig_fd);
close(bkup_fd);
return FALSE;
}
if(count_read > 0)
{
count_write = write(bkup_fd, buf, count_read);
if(count_write == -1)
{
close(orig_fd);
close(bkup_fd);
return FALSE;
}
}
} while(count_read > 0);
close(orig_fd);
close(bkup_fd);
return TRUE;
}
static gboolean
gnc_int_link_or_make_backup(GNCBook *book, const char *orig, const char *bkup)
{
int err_ret = link(orig, bkup);
if(err_ret != 0)
{
if(errno == EPERM || errno == EOPNOTSUPP)
{
err_ret = copy_file(orig, bkup);
}
if(!err_ret)
{
gnc_book_push_error(
book, ERR_BACKEND_MISC,
g_strdup_printf("unable to make file backup from %s to %s: %s",
orig, bkup,
strerror(errno) ? strerror(errno) : ""));
return FALSE;
}
}
return TRUE;
}
static gboolean
gnc_book_backup_file(GNCBook *book)
{
gboolean bkup_ret;
char *timestamp;
char *backup;
const char *datafile = gnc_book_get_file_path(book);
@ -469,16 +571,12 @@ gnc_book_backup_file(GNCBook *book)
char *bin_bkup = g_new(char, strlen(datafile) + strlen(back) + 1);
strcpy(bin_bkup, datafile);
strcat(bin_bkup, back);
if(link(datafile, bin_bkup) != 0)
bkup_ret = gnc_int_link_or_make_backup(book, datafile, bin_bkup);
g_free(bin_bkup);
if(!bkup_ret)
{
gnc_book_push_error(
book, ERR_BACKEND_MISC,
g_strdup_printf("unable to make bin file backup: %s",
strerror(errno) ? strerror(errno) : ""));
g_free(bin_bkup);
return FALSE;
}
g_free(bin_bkup);
}
timestamp = xaccDateUtilGetStampNow ();
@ -489,19 +587,10 @@ gnc_book_backup_file(GNCBook *book)
strcat (backup, ".xac");
g_free (timestamp);
if(link(datafile, backup) != 0)
{
gnc_book_push_error(
book, ERR_BACKEND_MISC,
g_strdup_printf("unable to link backup file: %s",
strerror(errno) ? strerror(errno) : ""));
g_free(backup);
return FALSE;
}
bkup_ret = gnc_int_link_or_make_backup(book, datafile, backup);
g_free(backup);
return TRUE;
return bkup_ret;
}
static gboolean
@ -542,15 +631,8 @@ gnc_book_write_to_file(GNCBook *book,
g_free(tmp_name);
return FALSE;
}
if(link(tmp_name, datafile) != 0)
if(!gnc_int_link_or_make_backup(book, tmp_name, datafile))
{
gnc_book_push_error(
book, ERR_BACKEND_MISC,
g_strdup_printf("unable to link from temp filename %s to "
"real filename %s: %s",
tmp_name ? tmp_name : "(null)",
datafile ? datafile : "(null)",
strerror(errno) ? strerror(errno) : ""));
g_free(tmp_name);
return FALSE;
}
@ -579,7 +661,6 @@ gnc_book_write_to_file(GNCBook *book,
/* already in an error just flow on through */
}
g_free(tmp_name);
gnc_book_push_error(book, ERR_BACKEND_MISC, NULL);
return FALSE;
}
}