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=== modified file 'sql/tztime.cc'
--- a/sql/tztime.cc 2013-05-07 11:05:09 +0000
+++ b/sql/tztime.cc 2013-11-13 15:16:35 +0000
@@ -2494,7 +2494,7 @@
*/
my_bool
-scan_tz_dir(char * name_end)
+scan_tz_dir(char * name_end, uint symlink_recursion_level)
{
MY_DIR *cur_dir;
char *name_end_tmp;
@@ -2514,7 +2514,32 @@
if (MY_S_ISDIR(cur_dir->dir_entry[i].mystat->st_mode))
{
- if (scan_tz_dir(name_end_tmp))
+ my_bool is_symlink;
+ if ((is_symlink= my_is_symlink(fullname)) &&
+ symlink_recursion_level > 0)
+ {
+ /*
+ The timezone definition data in some Linux distributions
+ (e.g. the "timezone-data-2013f" package in Gentoo)
+ may have synlimks like:
+ /usr/share/zoneinfo/posix/ -> /usr/share/zoneinfo/,
+ so the same timezone files are available under two names
+ (e.g. "CET" and "posix/CET").
+
+ We allow one level of symlink recursion for backward
+ compatibility with earlier timezone data packages that have
+ duplicate copies of the same timezone files inside the root
+ directory and the "posix" subdirectory (instead of symlinking).
+ This makes "posix/CET" still available, but helps to avoid
+ following such symlinks infinitely:
+ /usr/share/zoneinfo/posix/posix/posix/.../posix/
+ */
+ fflush(stdout);
+ fprintf(stderr, "Warning: Skipping directory '%s': "
+ "to avoid infinite symlink recursion.\n", fullname);
+ continue;
+ }
+ if (scan_tz_dir(name_end_tmp, symlink_recursion_level + is_symlink))
{
my_dirend(cur_dir);
return 1;
@@ -2526,14 +2551,20 @@
if (!tz_load(fullname, &tz_info, &tz_storage))
print_tz_as_sql(root_name_end + 1, &tz_info);
else
+ {
+ fflush(stdout);
fprintf(stderr,
"Warning: Unable to load '%s' as time zone. Skipping it.\n",
fullname);
+ }
free_root(&tz_storage, MYF(0));
}
else
+ {
+ fflush(stdout);
fprintf(stderr, "Warning: '%s' is not regular file or directory\n",
fullname);
+ }
}
}
@@ -2566,8 +2597,9 @@
printf("TRUNCATE TABLE time_zone_transition;\n");
printf("TRUNCATE TABLE time_zone_transition_type;\n");
- if (scan_tz_dir(root_name_end))
+ if (scan_tz_dir(root_name_end, 0))
{
+ fflush(stdout);
fprintf(stderr, "There were fatal errors during processing "
"of zoneinfo directory\n");
return 1;
@@ -2586,6 +2618,7 @@
{
if (tz_load(argv[2], &tz_info, &tz_storage))
{
+ fflush(stdout);
fprintf(stderr, "Problems with zoneinfo file '%s'\n", argv[2]);
return 1;
}
@@ -2595,6 +2628,7 @@
{
if (tz_load(argv[1], &tz_info, &tz_storage))
{
+ fflush(stdout);
fprintf(stderr, "Problems with zoneinfo file '%s'\n", argv[2]);
return 1;
}
@@ -2604,6 +2638,7 @@
free_root(&tz_storage, MYF(0));
}
+ my_end(0);
return 0;
}
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