timezone/tzcode-symlink.patch

93 lines
2.8 KiB
Diff

This patch is used on openSUSE 12.2 or newer. Nowadays,
/etc/localtime is by default a symbolic link to a zone
file in /usr/share/zoneinfo.
By default, zic tries the following approaches to create
/etc/localtime:
1. Hard link
2. Symbolic link
3. File copy
This patch changes the logic slightly: keep using symbolic
links if /etc/localtime is already one. If it isn't, use
the default order as listed above.
Index: timezone-2014i/zic.c
===================================================================
--- timezone-2014i.orig/zic.c
+++ timezone-2014i/zic.c
@@ -106,7 +106,7 @@ static int addtype(zic_t, char const *,
static void leapadd(zic_t, bool, int, int);
static void adjleap(void);
static void associate(void);
-static void dolink(const char * fromfield, const char * tofield);
+static void dolink(const char * fromfield, const char * tofield, int defaultsymlink);
static char ** getfields(char * buf);
static zic_t gethms(const char * string, const char * errstring,
bool);
@@ -608,7 +608,7 @@ _("%s: More than one -L option specified
*/
for (i = 0; i < nlinks; ++i) {
eat(links[i].l_filename, links[i].l_linenum);
- dolink(links[i].l_from, links[i].l_to);
+ dolink(links[i].l_from, links[i].l_to, false);
if (noise)
for (j = 0; j < nlinks; ++j)
if (strcmp(links[i].l_to,
@@ -617,11 +617,11 @@ _("%s: More than one -L option specified
}
if (lcltime != NULL) {
eat(_("command line"), 1);
- dolink(lcltime, TZDEFAULT);
+ dolink(lcltime, TZDEFAULT, true);
}
if (psxrules != NULL) {
eat(_("command line"), 1);
- dolink(psxrules, TZDEFRULES);
+ dolink(psxrules, TZDEFRULES, false);
}
if (warnings && (ferror(stderr) || fclose(stderr) != 0))
return EXIT_FAILURE;
@@ -687,8 +687,9 @@ namecheck(const char *name)
}
static void
-dolink(const char *const fromfield, const char *const tofield)
+dolink(const char *const fromfield, const char *const tofield, int defaultsymlink)
{
+ struct stat st;
register char * fromname;
register char * toname;
register int fromisdir;
@@ -701,6 +702,10 @@ dolink(const char *const fromfield, cons
fromname = ecatalloc(fromname, "/");
fromname = ecatalloc(fromname, fromfield);
}
+
+ if (lstat(fromname, &st) == 0 && S_ISLNK(st.st_mode))
+ defaultsymlink = true;
+
if (tofield[0] == '/')
toname = ecpyalloc(tofield);
else {
@@ -721,14 +726,15 @@ dolink(const char *const fromfield, cons
}
if (itsdir(toname) <= 0)
remove(toname);
- if (link(fromname, toname) != 0) {
+ if (defaultsymlink || link(fromname, toname) != 0) {
int result;
if (! mkdirs(toname))
exit(EXIT_FAILURE);
- result = link(fromname, toname);
- if (result != 0) {
+ if (!defaultsymlink)
+ result = link(fromname, toname);
+ if ((defaultsymlink || (!defaultsymlink && result != 0))) {
const char *s = fromname;
const char *t;
register char * symlinkcontents = NULL;