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glocalfileoutputstream: Fix error handling for a corner case

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If asked to replace a file (i.e. effectively delete and re-create it)
which is a symlink, in a read-only directory, the code would end up
trying to do operations on an invalid `fd`. This was masked when asked
to create a backup, as creating the backup in the read-only
directory would error out just in time.

Make the code a bit more robust in this situation, and add some unit
tests.

Spotted by scan-build.

Signed-off-by: Philip Withnall <pwithnall@gnome.org>
This commit is contained in:
Philip Withnall
2025-10-21 14:16:14 +01:00
parent f1eeef3777
commit 4937534257
2 changed files with 121 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
gio/glocalfileoutputstream.c
View File

@@ -1162,6 +1162,12 @@ handle_overwrite_open (const char *filename,
}
#endif
/* The FD could be invalid if the file is a symlink, a backup has been
* requested, and the source directory is read-only (as we won’t have
* errored out earlier), but in that case creating the backup file will
* have failed just above. */
g_assert (fd >= 0);
if (!copy_file_data (fd, bfd, NULL))
{
g_set_error_literal (error,
@@ -1193,8 +1199,7 @@ handle_overwrite_open (const char *filename,
if (replace_destination_set)
{
g_close (fd, NULL);
fd = -1;
g_clear_fd (&fd, NULL);
if (g_unlink (filename) != 0)
{

114
gio/tests/file.c
View File

@@ -1092,6 +1092,13 @@ test_replace_symlink_using_etag (void)
* See https://gitlab.gnome.org/GNOME/glib/-/issues/2325 */
#ifdef __linux__
/* Different arrangements of parent tmp directory. */
typedef enum
{
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_DIRECTORY_SETUP_TYPE_READ_ONLY,
} FileTestDirectorySetupType;
/* Different kinds of file which create_test_file() can create. */
typedef enum
{
@@ -1420,6 +1427,7 @@ test_replace (gconstpointer test_data)
const gchar *replace_etag; /* (nullable) */
/* File system setup. */
FileTestDirectorySetupType setup_directory_type;
FileTestSetupType setup_source_type;
guint setup_source_mode;
FileTestSetupType setup_backup_type;
@@ -1447,6 +1455,7 @@ test_replace (gconstpointer test_data)
* file created to check it’s not modified */
{
FALSE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, FALSE,
TRUE, 0, 0,
@@ -1455,6 +1464,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_EMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1463,6 +1473,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1471,6 +1482,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_DIRECTORY, 0,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
FALSE, G_IO_ERROR, G_IO_ERROR_IS_DIRECTORY,
@@ -1479,6 +1491,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_SOCKET, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
FALSE, G_IO_ERROR, G_IO_ERROR_NOT_REGULAR_FILE,
@@ -1487,6 +1500,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_SYMLINK_DANGLING, 0,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1495,6 +1509,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_SYMLINK_VALID, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1506,6 +1521,7 @@ test_replace (gconstpointer test_data)
* regular non-empty file; replacement should fail */
{
FALSE, G_FILE_CREATE_NONE, "incorrect etag",
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
FALSE, G_IO_ERROR, G_IO_ERROR_WRONG_ETAG,
@@ -1518,6 +1534,7 @@ test_replace (gconstpointer test_data)
* file created to check it’s either replaced or the operation fails */
{
TRUE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, FALSE,
TRUE, 0, 0,
@@ -1526,6 +1543,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_EMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1534,6 +1552,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1542,6 +1561,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_DIRECTORY, 0,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
FALSE, G_IO_ERROR, G_IO_ERROR_IS_DIRECTORY,
@@ -1550,6 +1570,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_SOCKET, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
FALSE, G_IO_ERROR, G_IO_ERROR_NOT_REGULAR_FILE,
@@ -1558,6 +1579,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_SYMLINK_DANGLING, 0,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1574,6 +1596,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_SYMLINK_VALID, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1590,6 +1613,7 @@ test_replace (gconstpointer test_data)
* created to check it’s either replaced or the operation fails */
{
TRUE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, FALSE,
TRUE, 0, 0,
@@ -1598,6 +1622,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_EMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1606,6 +1631,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1614,6 +1640,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_DIRECTORY, 0, FALSE,
FALSE, G_IO_ERROR, G_IO_ERROR_CANT_CREATE_BACKUP,
@@ -1622,6 +1649,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_SOCKET, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1630,6 +1658,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_SYMLINK_DANGLING, 0, FALSE,
TRUE, 0, 0,
@@ -1638,6 +1667,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_SYMLINK_VALID, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1652,6 +1682,7 @@ test_replace (gconstpointer test_data)
* mostly with a backup file created to check it’s not modified */
{
FALSE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, FALSE,
TRUE, 0, 0,
@@ -1660,6 +1691,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_EMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1668,6 +1700,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1676,6 +1709,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_DIRECTORY, 0,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
FALSE, G_IO_ERROR, G_IO_ERROR_IS_DIRECTORY,
@@ -1684,6 +1718,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_SOCKET, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
FALSE, G_IO_ERROR, G_IO_ERROR_NOT_REGULAR_FILE,
@@ -1692,6 +1727,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_SYMLINK_DANGLING, 0,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1700,6 +1736,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_SYMLINK_VALID, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1714,6 +1751,7 @@ test_replace (gconstpointer test_data)
* should fail */
{
FALSE, G_FILE_CREATE_REPLACE_DESTINATION, "incorrect etag",
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
FALSE, G_IO_ERROR, G_IO_ERROR_WRONG_ETAG,
@@ -1727,6 +1765,7 @@ test_replace (gconstpointer test_data)
* operation fails */
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, FALSE,
TRUE, 0, 0,
@@ -1735,6 +1774,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_EMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1743,6 +1783,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1751,6 +1792,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_DIRECTORY, 0,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
FALSE, G_IO_ERROR, G_IO_ERROR_IS_DIRECTORY,
@@ -1759,6 +1801,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_SOCKET, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
FALSE, G_IO_ERROR, G_IO_ERROR_NOT_REGULAR_FILE,
@@ -1767,6 +1810,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_SYMLINK_DANGLING, 0,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1775,6 +1819,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_SYMLINK_VALID, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1790,6 +1835,7 @@ test_replace (gconstpointer test_data)
* operation fails */
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, FALSE,
TRUE, 0, 0,
@@ -1798,6 +1844,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_EMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1806,6 +1853,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1814,6 +1862,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_DIRECTORY, 0, FALSE,
FALSE, G_IO_ERROR, G_IO_ERROR_CANT_CREATE_BACKUP,
@@ -1822,6 +1871,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_SOCKET, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1830,6 +1880,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_SYMLINK_DANGLING, 0, FALSE,
TRUE, 0, 0,
@@ -1838,6 +1889,7 @@ test_replace (gconstpointer test_data)
},
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_SYMLINK_VALID, default_public_mode, FALSE,
TRUE, 0, 0,
@@ -1850,6 +1902,7 @@ test_replace (gconstpointer test_data)
/* several different setups with replace_flags == PRIVATE */
{
FALSE, G_FILE_CREATE_PRIVATE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, FALSE,
TRUE, 0, 0,
@@ -1858,6 +1911,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_PRIVATE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, FALSE,
TRUE, 0, 0,
@@ -1867,6 +1921,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_PRIVATE | G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, FALSE,
TRUE, 0, 0,
@@ -1875,6 +1930,7 @@ test_replace (gconstpointer test_data)
},
{
FALSE, G_FILE_CREATE_PRIVATE | G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_NONEMPTY, default_public_mode,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, FALSE,
TRUE, 0, 0,
@@ -1889,12 +1945,53 @@ test_replace (gconstpointer test_data)
* and in particular if we're root. In this scenario,we need to skip it */
{
FALSE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_NORMAL,
FILE_TEST_SETUP_TYPE_REGULAR_EMPTY, 0 /* most restrictive permissions */,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, TRUE,
FALSE, G_IO_ERROR, G_IO_ERROR_PERMISSION_DENIED,
1, FILE_TEST_SETUP_TYPE_REGULAR_EMPTY, 0, NULL,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, NULL,
},
/* A symlink in an unwriteable directory, with the need to replace the
* destination and make a backup, tests the fallback backup code path. It
* can’t succeed, because even if the file replace would work, the backup
* file cannot be created in a read-only directory. */
{
TRUE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_READ_ONLY,
FILE_TEST_SETUP_TYPE_SYMLINK_VALID, default_public_mode,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, TRUE,
FALSE, G_IO_ERROR, G_IO_ERROR_CANT_CREATE_BACKUP,
2, FILE_TEST_SETUP_TYPE_SYMLINK_VALID, default_public_mode, "source-target",
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, NULL,
},
/* Same as above, but without trying to create a backup. We expect this to
* fail because replacing the destination requires deleting and
* re-creating the file, which can’t happen in a read-only directory. */
{
FALSE, G_FILE_CREATE_REPLACE_DESTINATION, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_READ_ONLY,
FILE_TEST_SETUP_TYPE_SYMLINK_VALID, default_public_mode,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, TRUE,
FALSE, G_IO_ERROR, G_IO_ERROR_PERMISSION_DENIED,
2, FILE_TEST_SETUP_TYPE_SYMLINK_VALID, default_public_mode, "source-target",
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, NULL,
},
/* Same as above, but without trying to create a backup or trying to
* replace the file. */
{
FALSE, G_FILE_CREATE_NONE, NULL,
FILE_TEST_DIRECTORY_SETUP_TYPE_READ_ONLY,
FILE_TEST_SETUP_TYPE_SYMLINK_VALID, default_public_mode,
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, TRUE,
TRUE, 0, 0,
/* the second file is the source-target file, which should contain the new_contents */
2, FILE_TEST_SETUP_TYPE_SYMLINK_VALID, default_public_mode, "source-target",
FILE_TEST_SETUP_TYPE_NONEXISTENT, 0, NULL,
},
};
gsize i;
@@ -1941,6 +2038,15 @@ test_replace (gconstpointer test_data)
source_file = create_test_file (tmpdir, "source", tests[i].setup_source_type, tests[i].setup_source_mode);
backup_file = create_test_file (tmpdir, "source~", tests[i].setup_backup_type, tests[i].setup_backup_mode);
/* Make the tmpdir read-only if desired. */
if (tests[i].setup_directory_type == FILE_TEST_DIRECTORY_SETUP_TYPE_READ_ONLY)
{
g_file_set_attribute_uint32 (tmpdir, G_FILE_ATTRIBUTE_UNIX_MODE,
0500, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
NULL, &local_error);
g_assert_no_error (local_error);
}
/* Replace the source file. Check the error state only after finishing
* writing, as the replace operation is split across g_file_replace() and
* g_output_stream_close(). */
@@ -2042,6 +2148,14 @@ test_replace (gconstpointer test_data)
/* Tidy up. Ignore failure apart from when deleting the directory, which
* should be empty. */
if (tests[i].setup_directory_type == FILE_TEST_DIRECTORY_SETUP_TYPE_READ_ONLY)
{
g_file_set_attribute_uint32 (tmpdir, G_FILE_ATTRIBUTE_UNIX_MODE,
0700, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
NULL, &local_error);
g_assert_no_error (local_error);
}
g_file_delete (source_file, NULL, NULL);
g_file_delete (backup_file, NULL, NULL);