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Diffstat (limited to 'fedora/tzdata-update.c')
-rw-r--r--fedora/tzdata-update.c589
1 files changed, 589 insertions, 0 deletions
diff --git a/fedora/tzdata-update.c b/fedora/tzdata-update.c
new file mode 100644
index 0000000000..f94f9a2609
--- /dev/null
+++ b/fedora/tzdata-update.c
@@ -0,0 +1,589 @@
+#ifdef __sparc__
+register void *__thread_self __asm ("g7");
+#endif
+#define _GNU_SOURCE 1
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syscall.h>
+#include <unistd.h>
+
+#if defined __i386__
+# define INTERNAL_SYSCALL_DECL(err) do { } while (0)
+# define INTERNAL_SYSCALL(name, err, nr, args...) \
+ ({ \
+ register unsigned int resultvar; \
+ asm volatile ( \
+ "movl %1, %%eax\n\t" \
+ "int $0x80\n\t" \
+ : "=a" (resultvar) \
+ : "i" (__NR_##name) ASMFMT_##nr(args) : "memory", "cc"); \
+ (int) resultvar; })
+# define INTERNAL_SYSCALL_ERROR_P(val, err) \
+ ((unsigned int) (val) >= 0xfffff001u)
+# define ASMFMT_0()
+# define ASMFMT_1(arg1) \
+ , "b" (arg1)
+# define ASMFMT_2(arg1, arg2) \
+ , "b" (arg1), "c" (arg2)
+# define ASMFMT_3(arg1, arg2, arg3) \
+ , "b" (arg1), "c" (arg2), "d" (arg3)
+#elif defined __x86_64__
+# define INTERNAL_SYSCALL_DECL(err) do { } while (0)
+# define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
+ ({ \
+ unsigned long resultvar; \
+ LOAD_ARGS_##nr (args) \
+ LOAD_REGS_##nr \
+ asm volatile ( \
+ "syscall\n\t" \
+ : "=a" (resultvar) \
+ : "0" (name) ASM_ARGS_##nr : "memory", "cc", "r11", "cx"); \
+ (long) resultvar; })
+# define INTERNAL_SYSCALL(name, err, nr, args...) \
+ INTERNAL_SYSCALL_NCS (__NR_##name, err, nr, ##args)
+# define INTERNAL_SYSCALL_ERROR_P(val, err) \
+ ((unsigned long) (val) >= -4095L)
+# define LOAD_ARGS_0()
+# define LOAD_REGS_0
+# define ASM_ARGS_0
+# define LOAD_ARGS_1(a1) \
+ long int __arg1 = (long) (a1); \
+ LOAD_ARGS_0 ()
+# define LOAD_REGS_1 \
+ register long int _a1 asm ("rdi") = __arg1; \
+ LOAD_REGS_0
+# define ASM_ARGS_1 ASM_ARGS_0, "r" (_a1)
+# define LOAD_ARGS_2(a1, a2) \
+ long int __arg2 = (long) (a2); \
+ LOAD_ARGS_1 (a1)
+# define LOAD_REGS_2 \
+ register long int _a2 asm ("rsi") = __arg2; \
+ LOAD_REGS_1
+# define ASM_ARGS_2 ASM_ARGS_1, "r" (_a2)
+# define LOAD_ARGS_3(a1, a2, a3) \
+ long int __arg3 = (long) (a3); \
+ LOAD_ARGS_2 (a1, a2)
+# define LOAD_REGS_3 \
+ register long int _a3 asm ("rdx") = __arg3; \
+ LOAD_REGS_2
+# define ASM_ARGS_3 ASM_ARGS_2, "r" (_a3)
+#elif defined __powerpc__
+# define INTERNAL_SYSCALL_DECL(err) long int err
+# define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
+ ({ \
+ register long int r0 __asm__ ("r0"); \
+ register long int r3 __asm__ ("r3"); \
+ register long int r4 __asm__ ("r4"); \
+ register long int r5 __asm__ ("r5"); \
+ register long int r6 __asm__ ("r6"); \
+ register long int r7 __asm__ ("r7"); \
+ register long int r8 __asm__ ("r8"); \
+ LOADARGS_##nr(name, args); \
+ __asm__ __volatile__ \
+ ("sc\n\t" \
+ "mfcr %0\n\t" \
+ : "=&r" (r0), \
+ "=&r" (r3), "=&r" (r4), "=&r" (r5), \
+ "=&r" (r6), "=&r" (r7), "=&r" (r8) \
+ : ASM_INPUT_##nr \
+ : "r9", "r10", "r11", "r12", \
+ "cr0", "ctr", "memory"); \
+ err = r0; \
+ (int) r3; \
+ })
+# define INTERNAL_SYSCALL(name, err, nr, args...) \
+ INTERNAL_SYSCALL_NCS (__NR_##name, err, nr, ##args)
+# define INTERNAL_SYSCALL_ERROR_P(val, err) \
+ ((void) (val), __builtin_expect ((err) & (1 << 28), 0))
+# define LOADARGS_0(name, dummy) \
+ r0 = name
+# define LOADARGS_1(name, __arg1) \
+ long int arg1 = (long int) (__arg1); \
+ LOADARGS_0(name, 0); \
+ r3 = arg1
+# define LOADARGS_2(name, __arg1, __arg2) \
+ long int arg2 = (long int) (__arg2); \
+ LOADARGS_1(name, __arg1); \
+ r4 = arg2
+# define LOADARGS_3(name, __arg1, __arg2, __arg3) \
+ long int arg3 = (long int) (__arg3); \
+ LOADARGS_2(name, __arg1, __arg2); \
+ r5 = arg3
+# define ASM_INPUT_0 "0" (r0)
+# define ASM_INPUT_1 ASM_INPUT_0, "1" (r3)
+# define ASM_INPUT_2 ASM_INPUT_1, "2" (r4)
+# define ASM_INPUT_3 ASM_INPUT_2, "3" (r5)
+#elif defined __ia64__
+# define DO_INLINE_SYSCALL_NCS(name, nr, args...) \
+ LOAD_ARGS_##nr (args) \
+ register long _r8 asm ("r8"); \
+ register long _r10 asm ("r10"); \
+ register long _r15 asm ("r15") = name; \
+ long _retval; \
+ LOAD_REGS_##nr \
+ __asm __volatile ("break 0x100000;;" \
+ : "=r" (_r8), "=r" (_r10), "=r" (_r15) \
+ ASM_OUTARGS_##nr \
+ : "2" (_r15) ASM_ARGS_##nr \
+ : "memory" ASM_CLOBBERS_##nr); \
+ _retval = _r8;
+# define INTERNAL_SYSCALL_DECL(err) long int err
+# define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
+ ({ \
+ DO_INLINE_SYSCALL_NCS (name, nr, args) \
+ err = _r10; \
+ _retval; })
+# define INTERNAL_SYSCALL(name, err, nr, args...) \
+ INTERNAL_SYSCALL_NCS (__NR_##name, err, nr, ##args)
+# define INTERNAL_SYSCALL_ERROR_P(val, err) (err == -1)
+# define LOAD_ARGS_0()
+# define LOAD_REGS_0
+# define LOAD_ARGS_1(a1) \
+ long _arg1 = (long) (a1); \
+ LOAD_ARGS_0 ()
+# define LOAD_REGS_1 \
+ register long _out0 asm ("out0") = _arg1; \
+ LOAD_REGS_0
+# define LOAD_ARGS_2(a1, a2) \
+ long _arg2 = (long) (a2); \
+ LOAD_ARGS_1 (a1)
+# define LOAD_REGS_2 \
+ register long _out1 asm ("out1") = _arg2; \
+ LOAD_REGS_1
+# define LOAD_ARGS_3(a1, a2, a3) \
+ long _arg3 = (long) (a3); \
+ LOAD_ARGS_2 (a1, a2)
+# define LOAD_REGS_3 \
+ register long _out2 asm ("out2") = _arg3; \
+ LOAD_REGS_2
+# define ASM_OUTARGS_0
+# define ASM_OUTARGS_1 ASM_OUTARGS_0, "=r" (_out0)
+# define ASM_OUTARGS_2 ASM_OUTARGS_1, "=r" (_out1)
+# define ASM_OUTARGS_3 ASM_OUTARGS_2, "=r" (_out2)
+# define ASM_ARGS_0
+# define ASM_ARGS_1 ASM_ARGS_0, "3" (_out0)
+# define ASM_ARGS_2 ASM_ARGS_1, "4" (_out1)
+# define ASM_ARGS_3 ASM_ARGS_2, "5" (_out2)
+# define ASM_CLOBBERS_0 ASM_CLOBBERS_1, "out0"
+# define ASM_CLOBBERS_1 ASM_CLOBBERS_2, "out1"
+# define ASM_CLOBBERS_2 ASM_CLOBBERS_3, "out2"
+# define ASM_CLOBBERS_3 ASM_CLOBBERS_4, "out3"
+# define ASM_CLOBBERS_4 ASM_CLOBBERS_5, "out4"
+# define ASM_CLOBBERS_5 ASM_CLOBBERS_6, "out5"
+# define ASM_CLOBBERS_6_COMMON , "out6", "out7", \
+ /* Non-stacked integer registers, minus r8, r10, r15. */ \
+ "r2", "r3", "r9", "r11", "r12", "r13", "r14", "r16", "r17", "r18", \
+ "r19", "r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", \
+ "r28", "r29", "r30", "r31", \
+ /* Predicate registers. */ \
+ "p6", "p7", "p8", "p9", "p10", "p11", "p12", "p13", "p14", "p15", \
+ /* Non-rotating fp registers. */ \
+ "f6", "f7", "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
+ /* Branch registers. */ \
+ "b6"
+# define ASM_CLOBBERS_6 ASM_CLOBBERS_6_COMMON , "b7"
+#elif defined __s390__
+# define INTERNAL_SYSCALL_DECL(err) do { } while (0)
+# define INTERNAL_SYSCALL_DIRECT(name, err, nr, args...) \
+ ({ \
+ DECLARGS_##nr(args) \
+ register long _ret asm("2"); \
+ asm volatile ( \
+ "svc %b1\n\t" \
+ : "=d" (_ret) \
+ : "i" (__NR_##name) ASMFMT_##nr \
+ : "memory" ); \
+ _ret; })
+# define INTERNAL_SYSCALL_SVC0(name, err, nr, args...) \
+ ({ \
+ DECLARGS_##nr(args) \
+ register unsigned long _nr asm("1") = (unsigned long)(__NR_##name); \
+ register long _ret asm("2"); \
+ asm volatile ( \
+ "svc 0\n\t" \
+ : "=d" (_ret) \
+ : "d" (_nr) ASMFMT_##nr \
+ : "memory" ); \
+ _ret; })
+# define INTERNAL_SYSCALL(name, err, nr, args...) \
+ (((__NR_##name) < 256) ? \
+ INTERNAL_SYSCALL_DIRECT(name, err, nr, args) : \
+ INTERNAL_SYSCALL_SVC0(name, err,nr, args))
+# define INTERNAL_SYSCALL_ERROR_P(val, err) \
+ ((unsigned long) (val) >= -4095UL)
+# define DECLARGS_0()
+# define DECLARGS_1(arg1) \
+ register unsigned long gpr2 asm ("2") = (unsigned long)(arg1);
+# define DECLARGS_2(arg1, arg2) \
+ DECLARGS_1(arg1) \
+ register unsigned long gpr3 asm ("3") = (unsigned long)(arg2);
+# define DECLARGS_3(arg1, arg2, arg3) \
+ DECLARGS_2(arg1, arg2) \
+ register unsigned long gpr4 asm ("4") = (unsigned long)(arg3);
+# define ASMFMT_0
+# define ASMFMT_1 , "0" (gpr2)
+# define ASMFMT_2 , "0" (gpr2), "d" (gpr3)
+# define ASMFMT_3 , "0" (gpr2), "d" (gpr3), "d" (gpr4)
+#elif defined __sparc__
+# ifndef __arch64__
+# define __INTERNAL_SYSCALL_STRING \
+ "ta 0x10;" \
+ "bcs,a 1f;" \
+ " sub %%g0, %%o0, %%o0;" \
+ "1:"
+# define __SYSCALL_CLOBBERS "g2", "g3", "g4", "g5", "g6", \
+ "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
+ "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
+ "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \
+ "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \
+ "cc", "memory"
+# else
+# define __INTERNAL_SYSCALL_STRING \
+ "ta 0x6d;" \
+ "bcs,a,pt %%xcc, 1f;" \
+ " sub %%g0, %%o0, %%o0;" \
+ "1:"
+# define __SYSCALL_CLOBBERS "g2", "g3", "g4", "g5", "g6", \
+ "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
+ "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
+ "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \
+ "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \
+ "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46", \
+ "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62", \
+ "cc", "memory"
+# endif
+#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
+#define INTERNAL_SYSCALL(name, err, nr, args...) \
+ inline_syscall##nr(__INTERNAL_SYSCALL_STRING, __NR_##name, args)
+#define INTERNAL_SYSCALL_ERROR_P(val, err) \
+ ((unsigned long) (val) >= -515L)
+# define inline_syscall0(string,name,dummy...) \
+({ \
+ register long __o0 __asm__ ("o0"); \
+ register long __g1 __asm__ ("g1") = name; \
+ __asm __volatile (string : "=r" (__g1), "=r" (__o0) : \
+ "0" (__g1) : \
+ __SYSCALL_CLOBBERS); \
+ __o0; \
+})
+# define inline_syscall1(string,name,arg1) \
+({ \
+ register long __o0 __asm__ ("o0") = (long)(arg1); \
+ register long __g1 __asm__ ("g1") = name; \
+ __asm __volatile (string : "=r" (__g1), "=r" (__o0) : \
+ "0" (__g1), "1" (__o0) : \
+ __SYSCALL_CLOBBERS); \
+ __o0; \
+})
+# define inline_syscall2(string,name,arg1,arg2) \
+({ \
+ register long __o0 __asm__ ("o0") = (long)(arg1); \
+ register long __o1 __asm__ ("o1") = (long)(arg2); \
+ register long __g1 __asm__ ("g1") = name; \
+ __asm __volatile (string : "=r" (__g1), "=r" (__o0) : \
+ "0" (__g1), "1" (__o0), "r" (__o1) : \
+ __SYSCALL_CLOBBERS); \
+ __o0; \
+})
+# define inline_syscall3(string,name,arg1,arg2,arg3) \
+({ \
+ register long __o0 __asm__ ("o0") = (long)(arg1); \
+ register long __o1 __asm__ ("o1") = (long)(arg2); \
+ register long __o2 __asm__ ("o2") = (long)(arg3); \
+ register long __g1 __asm__ ("g1") = name; \
+ __asm __volatile (string : "=r" (__g1), "=r" (__o0) : \
+ "0" (__g1), "1" (__o0), "r" (__o1), \
+ "r" (__o2) : \
+ __SYSCALL_CLOBBERS); \
+ __o0; \
+})
+#elif defined __alpha__
+# define INTERNAL_SYSCALL(name, err_out, nr, args...) \
+ INTERNAL_SYSCALL1(name, err_out, nr, args)
+# define INTERNAL_SYSCALL1(name, err_out, nr, args...) \
+ INTERNAL_SYSCALL_NCS(__NR_##name, err_out, nr, args)
+# define INTERNAL_SYSCALL_NCS(name, err_out, nr, args...) \
+({ \
+ long _sc_ret, _sc_err; \
+ inline_syscall##nr(name, args); \
+ err_out = _sc_err; \
+ _sc_ret; \
+})
+# define INTERNAL_SYSCALL_DECL(err) long int err
+# define INTERNAL_SYSCALL_ERROR_P(val, err) err
+# define inline_syscall_clobbers \
+ "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", \
+ "$22", "$23", "$24", "$25", "$27", "$28", "memory"
+# define inline_syscall_r0_asm
+# define inline_syscall_r0_out_constraint "=v"
+# define inline_syscall0(name, args...) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_19 __asm__("$19"); \
+ \
+ _sc_0 = name; \
+ __asm__ __volatile__ \
+ ("callsys # %0 %1 <= %2" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19) \
+ : "0"(_sc_0) \
+ : inline_syscall_clobbers, \
+ "$16", "$17", "$18", "$20", "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+# define inline_syscall1(name,arg1) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_19 __asm__("$19"); \
+ \
+ _sc_0 = name; \
+ _sc_16 = (long) (arg1); \
+ __asm__ __volatile__ \
+ ("callsys # %0 %1 <= %2 %3" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19), "=r"(_sc_16) \
+ : "0"(_sc_0), "2"(_sc_16) \
+ : inline_syscall_clobbers, \
+ "$17", "$18", "$20", "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+# define inline_syscall2(name,arg1,arg2) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_17 __asm__("$17"); \
+ register long _sc_19 __asm__("$19"); \
+ \
+ _sc_0 = name; \
+ _sc_16 = (long) (arg1); \
+ _sc_17 = (long) (arg2); \
+ __asm__ __volatile__ \
+ ("callsys # %0 %1 <= %2 %3 %4" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17) \
+ : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17) \
+ : inline_syscall_clobbers, \
+ "$18", "$20", "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+# define inline_syscall3(name,arg1,arg2,arg3) \
+{ \
+ register long _sc_0 inline_syscall_r0_asm; \
+ register long _sc_16 __asm__("$16"); \
+ register long _sc_17 __asm__("$17"); \
+ register long _sc_18 __asm__("$18"); \
+ register long _sc_19 __asm__("$19"); \
+ \
+ _sc_0 = name; \
+ _sc_16 = (long) (arg1); \
+ _sc_17 = (long) (arg2); \
+ _sc_18 = (long) (arg3); \
+ __asm__ __volatile__ \
+ ("callsys # %0 %1 <= %2 %3 %4 %5" \
+ : inline_syscall_r0_out_constraint (_sc_0), \
+ "=r"(_sc_19), "=r"(_sc_16), "=r"(_sc_17), \
+ "=r"(_sc_18) \
+ : "0"(_sc_0), "2"(_sc_16), "3"(_sc_17), \
+ "4"(_sc_18) \
+ : inline_syscall_clobbers, "$20", "$21"); \
+ _sc_ret = _sc_0, _sc_err = _sc_19; \
+}
+#endif
+
+char buffer[32768], data[32768];
+size_t datasize;
+char zonename[1024];
+
+ssize_t
+readall (int fd, void *buf, size_t len)
+{
+ INTERNAL_SYSCALL_DECL (err);
+ size_t n = len;
+ ssize_t ret;
+ do
+ {
+ ret = INTERNAL_SYSCALL (read, err, 3, fd, buf, n);
+ if (INTERNAL_SYSCALL_ERROR_P (ret, err))
+ {
+ ret = -1;
+ break;
+ }
+ else if (ret == 0)
+ break;
+ buf = (char *) buf + ret;
+ n -= ret;
+ }
+ while (n > 0);
+ return ret < 0 ? ret : (ssize_t) (len - n);
+}
+
+ssize_t
+writeall (int fd, const void *buf, size_t len)
+{
+ INTERNAL_SYSCALL_DECL (err);
+ size_t n = len;
+ ssize_t ret;
+ do
+ {
+ ret = INTERNAL_SYSCALL (write, err, 3, fd, buf, n);
+ if (INTERNAL_SYSCALL_ERROR_P (ret, err))
+ {
+ ret = -1;
+ break;
+ }
+ else if (ret == 0)
+ break;
+ buf = (const char *) buf + ret;
+ n -= ret;
+ }
+ while (n > 0);
+ return ret < 0 ? ret : (ssize_t) (len - n);
+}
+
+void
+update (const char *filename)
+{
+ INTERNAL_SYSCALL_DECL (err);
+ long int fd = INTERNAL_SYSCALL (open, err, 2, filename, O_RDONLY);
+ if (INTERNAL_SYSCALL_ERROR_P (fd, err))
+ return;
+ ssize_t ret = readall (fd, buffer, sizeof (buffer));
+ INTERNAL_SYSCALL (close, err, 1, fd);
+ if (ret <= 0 || (size_t) ret == sizeof (buffer))
+ return;
+ /* Don't update the file unnecessarily. */
+ if ((size_t) ret == datasize && memcmp (buffer, data, datasize) == 0)
+ return;
+ size_t len = strlen (filename);
+ char tempfilename[len + sizeof (".tzupdate")];
+ memcpy (tempfilename, filename, len);
+ memcpy (tempfilename + len, ".tzupdate", sizeof (".tzupdate"));
+
+ fd = INTERNAL_SYSCALL (open, err, 3, tempfilename, O_WRONLY | O_CREAT | O_EXCL, 0600);
+ if (INTERNAL_SYSCALL_ERROR_P (fd, err))
+ return;
+ if (writeall (fd, data, datasize) != datasize)
+ {
+clean_up:
+ INTERNAL_SYSCALL (unlink, err, 1, tempfilename);
+ INTERNAL_SYSCALL (close, err, 1, fd);
+ return;
+ }
+ long int sret;
+ sret = INTERNAL_SYSCALL (fchmod, err, 2, fd, 0644);
+ if (INTERNAL_SYSCALL_ERROR_P (sret, err))
+ goto clean_up;
+ INTERNAL_SYSCALL (close, err, 1, fd);
+
+ sret = INTERNAL_SYSCALL (rename, err, 2, tempfilename, filename);
+ if (INTERNAL_SYSCALL_ERROR_P (sret, err))
+ INTERNAL_SYSCALL (unlink, err, 1, tempfilename);
+}
+
+int
+main (int argc, char **argv)
+{
+ INTERNAL_SYSCALL_DECL (err);
+ long int fd = INTERNAL_SYSCALL (open, err, 2, "/etc/sysconfig/clock", O_RDONLY);
+ if (INTERNAL_SYSCALL_ERROR_P (fd, err))
+ return 0;
+ ssize_t ret = readall (fd, buffer, sizeof (buffer) - 1);
+ INTERNAL_SYSCALL (close, err, 1, fd);
+ if (ret <= 0 || (size_t) ret == sizeof (buffer) - 1)
+ return 0;
+ char *p = buffer;
+ while (p != NULL)
+ {
+ while (*p == ' ' || *p == '\t') p++;
+ if (memcmp (p, "ZONE", 4) == 0)
+ {
+ p += 4;
+ while (*p == ' ' || *p == '\t') p++;
+ if (*p == '=')
+ {
+ p++;
+ while (*p == ' ' || *p == '\t') p++;
+ if (*p == '"') p++;
+ char *q = p;
+ while (strchr (" \t\n\"", *p) == NULL) p++;
+ const char path[] = "/usr/share/zoneinfo/";
+ if (p - q >= sizeof (zonename) - sizeof (path))
+ return 0;
+ memcpy (zonename, path, sizeof (path) - 1);
+ memcpy (zonename + sizeof (path) - 1, q, p - q);
+ break;
+ }
+ }
+ p = strchr (p, '\n');
+ if (p) p++;
+ }
+ if (*zonename == '\0')
+ return 0;
+ fd = INTERNAL_SYSCALL (open, err, 2, zonename, O_RDONLY);
+ if (INTERNAL_SYSCALL_ERROR_P (fd, err))
+ return 0;
+ ret = readall (fd, data, sizeof (data));
+ INTERNAL_SYSCALL (close, err, 1, fd);
+ if (ret <= 0 || (size_t) ret == sizeof (data))
+ return 0;
+ datasize = (size_t) ret;
+ update ("/etc/localtime");
+ update ("/var/spool/postfix/etc/localtime");
+ return 0;
+}
+
+int __libc_multiple_threads __attribute__((nocommon));
+int __libc_enable_asynccancel (void) { return 0; }
+void __libc_disable_asynccancel (int x) { }
+void __libc_csu_init (void) { }
+void __libc_csu_fini (void) { }
+pid_t __fork (void) { return -1; }
+char thr_buf[65536];
+
+#ifndef __powerpc__
+int __libc_start_main (int (*main) (int argc, char **argv),
+ int argc, char **argv,
+ void (*init) (void), void (*fini) (void),
+ void (*rtld_fini) (void), void * stack_end)
+#else
+struct startup_info
+{
+ void *sda_base;
+ int (*main) (int, char **, char **, void *);
+ int (*init) (int, char **, char **, void *);
+ void (*fini) (void);
+};
+
+int __libc_start_main (int argc, char **argv, char **ev,
+ void *auxvec, void (*rtld_fini) (void),
+ struct startup_info *stinfo,
+ char **stack_on_entry)
+#endif
+{
+#if defined __ia64__ || defined __powerpc64__
+ register void *r13 __asm ("r13") = thr_buf + 32768;
+ __asm ("" : : "r" (r13));
+#elif defined __sparc__
+ register void *g6 __asm ("g6") = thr_buf + 32768;
+ __thread_self = thr_buf + 32768;
+ __asm ("" : : "r" (g6), "r" (__thread_self));
+#elif defined __s390__ && !defined __s390x__
+ __asm ("sar %%a0,%0" : : "d" (thr_buf + 32768));
+#elif defined __s390x__
+ __asm ("sar %%a1,%0; srlg 0,%0,32; sar %%a0,0" : : "d" (thr_buf + 32768) : "0");
+#elif defined __powerpc__ && !defined __powerpc64__
+ register void *r2 __asm ("r2") = thr_buf + 32768;
+ __asm ("" : : "r" (r2));
+#endif
+#ifdef __powerpc__
+ argc = (long)*stack_on_entry;
+ argv = stack_on_entry + 1;
+#endif
+ long ret = main (argc, argv);
+ INTERNAL_SYSCALL_DECL (err);
+ INTERNAL_SYSCALL (exit, err, 1, ret);
+ return 110;
+}