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Fix the archive_write_data() function so it always returns

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number of bytes written, even when used to write files to
disk.  Extend the test suite to verify the correct return
values for archive_write_data() and archive_write_data_block().

Thanks to: Bruce Mah, for stepping in promptly to back out the
   earlier broken version of this fix
Thanks to: Colin Percival, for pointing out the correct fix
MFC after: 5 days
Approved by: re (ksmith)
Pointy hat: \me
This commit is contained in:
Tim Kientzle 2007-09-21 04:52:43 +00:00
parent baf3da661c
commit 016e328d16
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=172267
2 changed files with 86 additions and 4 deletions
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13
lib/libarchive/archive_write_disk.c
View file

@ -448,8 +448,10 @@ _archive_write_data_block(struct archive *_a,
__archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
ARCHIVE_STATE_DATA, "archive_write_disk_block");
if (a->fd < 0)
return (ARCHIVE_OK);
if (a->fd < 0) {
archive_set_error(&a->archive, 0, "File not open");
return (ARCHIVE_WARN);
}
archive_clear_error(&a->archive);
/* Seek if necessary to the specified offset. */
@ -478,12 +480,17 @@ static ssize_t
_archive_write_data(struct archive *_a, const void *buff, size_t size)
{
struct archive_write_disk *a = (struct archive_write_disk *)_a;
int r;
__archive_check_magic(&a->archive, ARCHIVE_WRITE_DISK_MAGIC,
ARCHIVE_STATE_DATA, "archive_write_data");
if (a->fd < 0)
return (ARCHIVE_OK);
return (_archive_write_data_block(_a, buff, size, a->offset));
r = _archive_write_data_block(_a, buff, size, a->offset);
if (r < ARCHIVE_OK)
return (r);
return (size);
}
static int

77
lib/libarchive/test/test_write_disk.c
View file

@ -50,6 +50,74 @@ static void create(struct archive_entry *ae, const char *msg)
st.st_mode, archive_entry_mode(ae));
assert(st.st_mode == (archive_entry_mode(ae) & ~UMASK));
}
static void create_reg_file(struct archive_entry *ae, const char *msg)
{
static const char data[]="abcdefghijklmnopqrstuvwxyz";
struct archive *ad;
struct stat st;
/* Write the entry to disk. */
assert((ad = archive_write_disk_new()) != NULL);
failure("%s", msg);
assertEqualIntA(ad, 0, archive_write_header(ad, ae));
assertEqualInt(sizeof(data), archive_write_data(ad, data, sizeof(data)));
assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
#if ARCHIVE_API_VERSION > 1
assertEqualInt(0, archive_write_finish(ad));
#else
archive_write_finish(ad);
#endif
/* Test the entries on disk. */
assert(0 == stat(archive_entry_pathname(ae), &st));
failure("st.st_mode=%o archive_entry_mode(ae)=%o",
st.st_mode, archive_entry_mode(ae));
assertEqualInt(st.st_mode, (archive_entry_mode(ae) & ~UMASK));
assertEqualInt(st.st_size, sizeof(data));
}
static void create_reg_file2(struct archive_entry *ae, const char *msg)
{
const int datasize = 100000;
char *data;
char *compare;
struct archive *ad;
struct stat st;
int i, fd;
data = malloc(datasize);
for (i = 0; i < datasize; i++)
data[i] = (char)(i % 256);
/* Write the entry to disk. */
assert((ad = archive_write_disk_new()) != NULL);
failure("%s", msg);
assertEqualIntA(ad, 0, archive_write_header(ad, ae));
for (i = 0; i < datasize - 999; i += 1000) {
assertEqualIntA(ad, ARCHIVE_OK,
archive_write_data_block(ad, data + i, 1000, i));
}
assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
#if ARCHIVE_API_VERSION > 1
assertEqualInt(0, archive_write_finish(ad));
#else
archive_write_finish(ad);
#endif
/* Test the entries on disk. */
assert(0 == stat(archive_entry_pathname(ae), &st));
failure("st.st_mode=%o archive_entry_mode(ae)=%o",
st.st_mode, archive_entry_mode(ae));
assertEqualInt(st.st_mode, (archive_entry_mode(ae) & ~UMASK));
assertEqualInt(st.st_size, i);
compare = malloc(datasize);
fd = open(archive_entry_pathname(ae), O_RDONLY);
assertEqualInt(datasize, read(fd, compare, datasize));
close(fd);
assert(memcmp(compare, data, datasize) == 0);
free(compare);
free(data);
}
#endif
DEFINE_TEST(test_write_disk)
@ -66,7 +134,14 @@ DEFINE_TEST(test_write_disk)
assert((ae = archive_entry_new()) != NULL);
archive_entry_copy_pathname(ae, "file");
archive_entry_set_mode(ae, S_IFREG | 0755);
create(ae, "Test creating a regular file");
create_reg_file(ae, "Test creating a regular file");
archive_entry_free(ae);
/* Another regular file. */
assert((ae = archive_entry_new()) != NULL);
archive_entry_copy_pathname(ae, "file2");
archive_entry_set_mode(ae, S_IFREG | 0755);
create_reg_file2(ae, "Test creating another regular file");
archive_entry_free(ae);
/* A regular file over an existing file */