fi
+ac_fn_c_check_member "$LINENO" "struct stat" "st_atim" "ac_cv_member_struct_stat_st_atim" "$ac_includes_default"
+if test "x$ac_cv_member_struct_stat_st_atim" = xyes; then :
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_STRUCT_STAT_ST_ATIM 1
+_ACEOF
+
+
+fi
+
ac_fn_c_check_type "$LINENO" "ssize_t" "ac_cv_type_ssize_t" "#include <sys/types.h>
"
if test "x$ac_cv_type_ssize_t" = xyes; then :
fi
fi
-for ac_func in __secure_getenv backtrace blkid_probe_get_topology chflags fallocate fallocate64 fchown fdatasync fstat64 ftruncate64 getdtablesize getmntinfo getpwuid_r getrlimit getrusage jrand48 llseek lseek64 mallinfo mbstowcs memalign mmap msync nanosleep open64 pathconf posix_fadvise posix_memalign prctl secure_getenv setmntent setresgid setresuid srandom strcasecmp strdup strnlen strptime strtoull sync_file_range sysconf usleep utime valloc
+for ac_func in __secure_getenv backtrace blkid_probe_get_topology chflags fallocate fallocate64 fchown fdatasync fstat64 ftruncate64 futimes getdtablesize getmntinfo getpwuid_r getrlimit getrusage jrand48 llseek lseek64 mallinfo mbstowcs memalign mmap msync nanosleep open64 pathconf posix_fadvise posix_memalign prctl secure_getenv setmntent setresgid setresuid srandom strcasecmp strdup strnlen strptime strtoull sync_file_range sysconf usleep utime valloc
do :
as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
fi
if test $cross_compiling = no; then
- BUILD_CFLAGS="$CFLAGS $CPPFLAGS"
+ BUILD_CFLAGS="$CFLAGS $CPPFLAGS $INCLUDES -DHAVE_CONFIG_H"
BUILD_LDFLAGS="$LDFLAGS"
else
BUILD_CFLAGS=
AC_CHECK_MEMBER(struct dirent.d_reclen,[AC_DEFINE(HAVE_RECLEN_DIRENT, 1,
[Define to 1 if dirent has d_reclen])],,
[#include <dirent.h>])
+AC_CHECK_MEMBERS([struct stat.st_atim])
dnl Check to see if ssize_t was declared
AC_CHECK_TYPE(ssize_t,[AC_DEFINE(HAVE_TYPE_SSIZE_T, 1,
[Define to 1 if ssize_t declared])],,
fdatasync
fstat64
ftruncate64
+ futimes
getdtablesize
getmntinfo
getpwuid_r
dnl Build CFLAGS
dnl
if test $cross_compiling = no; then
- BUILD_CFLAGS="$CFLAGS $CPPFLAGS"
+ BUILD_CFLAGS="$CFLAGS $CPPFLAGS $INCLUDES -DHAVE_CONFIG_H"
BUILD_LDFLAGS="$LDFLAGS"
else
BUILD_CFLAGS=
*
*/
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
+#include <fcntl.h>
#include <time.h>
#include <utime.h>
/*
* Return 0 if the files are different, 1 if the files are the same.
*/
-static int compare_file(const char *outfn, const char *newfn)
+static int compare_file(FILE *old_f, FILE *new_f)
{
- FILE *old_f, *new_f;
char oldbuf[2048], newbuf[2048], *oldcp, *newcp;
int retval;
- old_f = fopen(outfn, "r");
- if (!old_f)
- return 0;
- new_f = fopen(newfn, "r");
- if (!new_f) {
- fclose(old_f);
- return 0;
- }
-
while (1) {
oldcp = fgets(oldbuf, sizeof(oldbuf), old_f);
newcp = fgets(newbuf, sizeof(newbuf), new_f);
break;
}
}
- fclose(old_f);
- fclose(new_f);
return retval;
}
{
char line[2048];
int c;
- FILE *in, *out;
+ int fd;
+ FILE *in, *out, *old = NULL;
char *outfn = NULL, *newfn = NULL;
int verbose = 0;
int adjust_timestamp = 0;
+ int got_atime = 0;
struct stat stbuf;
- struct utimbuf ut;
+ struct timeval tv[2];
while ((c = getopt (argc, argv, "f:tv")) != EOF) {
switch (c) {
}
strcpy(newfn, outfn);
strcat(newfn, ".new");
- out = fopen(newfn, "w");
- if (!out) {
+ fd = open(newfn, O_CREAT|O_TRUNC|O_RDWR, 0444);
+ if (fd < 0) {
perror(newfn);
exit(1);
}
+ out = fdopen(fd, "w+");
+ if (!out) {
+ perror("fdopen");
+ exit(1);
+ }
+
+ fd = open(outfn, O_RDONLY);
+ if (fd > 0) {
+ /* save the original atime, if possible */
+ if (fstat(fd, &stbuf) == 0) {
+#if HAVE_STRUCT_STAT_ST_ATIM
+ tv[0].tv_sec = stbuf.st_atim.tv_sec;
+ tv[0].tv_usec = stbuf.st_atim.tv_nsec / 1000;
+#else
+ tv[0].tv_sec = stbuf.st_atime;
+ tv[0].tv_usec = 0;
+#endif
+ got_atime = 1;
+ }
+ old = fdopen(fd, "r");
+ if (!old)
+ close(fd);
+ }
} else {
out = stdout;
outfn = 0;
fputs(line, out);
}
fclose(in);
- fclose(out);
if (outfn) {
- struct stat st;
- if (compare_file(outfn, newfn)) {
+ fflush(out);
+ rewind(out);
+ if (old && compare_file(old, out)) {
if (verbose)
printf("No change, keeping %s.\n", outfn);
if (adjust_timestamp) {
- if (stat(outfn, &stbuf) == 0) {
- if (verbose)
- printf("Updating modtime for %s\n", outfn);
- ut.actime = stbuf.st_atime;
- ut.modtime = time(0);
- if (utime(outfn, &ut) < 0)
- perror("utime");
+ if (verbose)
+ printf("Updating modtime for %s\n", outfn);
+ if (gettimeofday(&tv[1], NULL) < 0) {
+ perror("gettimeofday");
+ exit(1);
}
+ if (got_atime == 0)
+ tv[0] = tv[1];
+ else if (verbose)
+ printf("Using original atime\n");
+#ifdef HAVE_FUTIMES
+ if (futimes(fileno(old), tv) < 0)
+ perror("futimes");
+#else
+ if (utimes(outfn, tv) < 0)
+ perror("utimes");
+#endif
}
- unlink(newfn);
+ fclose(out);
+ if (unlink(newfn) < 0)
+ perror("unlink");
} else {
if (verbose)
printf("Creating or replacing %s.\n", outfn);
- rename(newfn, outfn);
+ fclose(out);
+ if (old)
+ fclose(old);
+ old = NULL;
+ if (rename(newfn, outfn) < 0) {
+ perror("rename");
+ exit(1);
+ }
}
- /* set read-only to alert user it is a generated file */
- if (stat(outfn, &st) == 0)
- chmod(outfn, st.st_mode & ~0222);
}
+ if (old)
+ fclose(old);
return (0);
}