/*
* _prop_object_externalize_write_file --
* Write an externalized dictionary to the specified file.
* The file is written atomically from the caller's perspective,
* and the mode set to 0666 modified by the caller's umask.
*/
bool
_prop_object_externalize_write_file(const char *fname, const char *xml,
size_t len)
{
char tname[PATH_MAX];
int fd;
int save_errno;
mode_t myumask;
if (len > SSIZE_MAX) {
errno = EFBIG;
return (false);
}
/*
* Get the directory name where the file is to be written
* and create the temporary file.
*/
_prop_object_externalize_file_dirname(fname, tname);
#define PLISTTMP "/.plistXXXXXX"
if (strlen(tname) + strlen(PLISTTMP) >= sizeof(tname)) {
errno = ENAMETOOLONG;
return (false);
}
strcat(tname, PLISTTMP);
#undef PLISTTMP
if ((fd = mkstemp(tname)) == -1)
return (false);
if (write(fd, xml, len) != (ssize_t)len)
goto bad;
if (fsync(fd) == -1)
goto bad;
myumask = umask(0);
(void)umask(myumask);
if (fchmod(fd, 0666 & ~myumask) == -1)
goto bad;
(void) close(fd);
fd = -1;
if (rename(tname, fname) == -1)
goto bad;
return (true);
bad:
save_errno = errno;
if (fd != -1)
(void) close(fd);
(void) unlink(tname);
errno = save_errno;
return (false);
}
/*
* _prop_object_externalize_write_file --
* Write an externalized dictionary to the specified file.
* The file is written atomically from the caller's perspective,
* and the mode set to 0666 modified by the caller's umask.
*
* The 'compress' argument enables gzip (via zlib) compression
* for the file to be written.
*/
bool
_prop_object_externalize_write_file(const char *fname, const char *xml,
size_t len, bool do_compress)
{
gzFile gzf = NULL;
char tname[PATH_MAX];
int fd;
int save_errno;
mode_t myumask;
if (len > SSIZE_MAX) {
errno = EFBIG;
return (false);
}
/*
* Get the directory name where the file is to be written
* and create the temporary file.
*/
_prop_object_externalize_file_dirname(fname, tname);
#define PLISTTMP "/.plistXXXXXX"
if (strlen(tname) + strlen(PLISTTMP) >= sizeof(tname)) {
errno = ENAMETOOLONG;
return (false);
}
strcat(tname, PLISTTMP);
#undef PLISTTMP
if ((fd = mkstemp(tname)) == -1)
return (false);
if (do_compress) {
if ((gzf = gzdopen(fd, "a")) == NULL)
goto bad;
if (gzsetparams(gzf, Z_BEST_COMPRESSION, Z_DEFAULT_STRATEGY))
goto bad;
if (gzwrite(gzf, xml, len) != (ssize_t)len)
goto bad;
} else {
if (write(fd, xml, len) != (ssize_t)len)
goto bad;
}
#ifdef HAVE_FDATASYNC
if (fdatasync(fd) == -1)
#else
if (fsync(fd) == -1)
#endif
goto bad;
myumask = umask(0);
(void)umask(myumask);
if (fchmod(fd, 0666 & ~myumask) == -1)
goto bad;
if (do_compress)
(void)gzclose(gzf);
else
(void)close(fd);
fd = -1;
if (rename(tname, fname) == -1)
goto bad;
return (true);
bad:
save_errno = errno;
if (do_compress && gzf != NULL)
(void)gzclose(gzf);
else if (fd != -1)
(void)close(fd);
(void) unlink(tname);
errno = save_errno;
return (false);
}
