*: introduce and use xmkstemp. -65 bytes.

Signed-off-by: Alexander Shishkin <virtuoso@slind.org>
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>

7 files changed, 17 insertions, 16 deletions

diff --git a/coreutils/dos2unix.c b/coreutils/dos2unix.c
index ba1ca8c79..eab8110dc 100644
--- a/coreutils/dos2unix.c
+++ b/coreutils/dos2unix.c
@@ -41,12 +41,10 @@ static void convert(char *fn, int conv_type)
                 fstat(fileno(in), &st);
 
                 temp_fn = xasprintf("%sXXXXXX", resolved_fn);
-                i = mkstemp(temp_fn);
-                if (i == -1
-                 || fchmod(i, st.st_mode) == -1
-                ) {
+                i = xmkstemp(temp_fn);
+                if (fchmod(i, st.st_mode) == -1)
                         bb_simple_perror_msg_and_die(temp_fn);
-                }
+
                 out = xfdopen_for_write(i);
         }
 
diff --git a/editors/diff.c b/editors/diff.c
index 83de52753..d9d709db6 100644
--- a/editors/diff.c
+++ b/editors/diff.c
@@ -685,9 +685,8 @@ static int diffreg(char *file[2])
                  */
                 if (lseek(fd, 0, SEEK_SET) == -1 && errno == ESPIPE) {
                         char name[] = "/tmp/difXXXXXX";
-                        int fd_tmp = mkstemp(name);
-                        if (fd_tmp < 0)
-                                bb_perror_msg_and_die("mkstemp");
+                        int fd_tmp = xmkstemp(name);
+
                         unlink(name);
                         if (bb_copyfd_eof(fd, fd_tmp) < 0)
                                 xfunc_die();
diff --git a/editors/patch.c b/editors/patch.c
index fff06907f..33ff8b569 100644
--- a/editors/patch.c
+++ b/editors/patch.c
@@ -200,8 +200,7 @@ int copy_tempfile(int fdin, char *name, char **tempname)
         int fd;
 
         *tempname = xasprintf("%sXXXXXX", name);
-        fd = mkstemp(*tempname);
-        if(-1 == fd) bb_perror_msg_and_die("no temp file");
+        fd = xmkstemp(*tempname);
 
         // Set permissions of output file
         fstat(fdin, &statbuf);
diff --git a/editors/sed.c b/editors/sed.c
index 8d9f7b25b..964d0405e 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -1370,9 +1370,7 @@ int sed_main(int argc UNUSED_PARAM, char **argv)
                         }
 
                         G.outname = xasprintf("%sXXXXXX", argv[i]);
-                        nonstdoutfd = mkstemp(G.outname);
-                        if (-1 == nonstdoutfd)
-                                bb_perror_msg_and_die("can't create temp file %s", G.outname);
+                        nonstdoutfd = xmkstemp(G.outname);
                         G.nonstdout = xfdopen_for_write(nonstdoutfd);
 
                         /* Set permissions/owner of output file */
diff --git a/include/libbb.h b/include/libbb.h
index 01dc33e63..409c434cb 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -425,6 +425,7 @@ int xopen_stdin(const char *pathname) FAST_FUNC;
 void xrename(const char *oldpath, const char *newpath) FAST_FUNC;
 int rename_or_warn(const char *oldpath, const char *newpath) FAST_FUNC;
 off_t xlseek(int fd, off_t offset, int whence) FAST_FUNC;
+int xmkstemp(char *template) FAST_FUNC;
 off_t fdlength(int fd) FAST_FUNC;
 
 uoff_t FAST_FUNC get_volume_size_in_bytes(int fd,
diff --git a/libbb/xfuncs_printf.c b/libbb/xfuncs_printf.c
index ba660a2db..56ee459e4 100644
--- a/libbb/xfuncs_printf.c
+++ b/libbb/xfuncs_printf.c
@@ -240,6 +240,14 @@ off_t FAST_FUNC xlseek(int fd, off_t offset, int whence)
         return off;
 }
 
+int FAST_FUNC xmkstemp(char *template)
+{
+        int fd = mkstemp(template);
+        if (fd < 0)
+                bb_perror_msg_and_die("can't create temp file '%s'", template);
+        return fd;
+}
+
 // Die with supplied filename if this FILE* has ferror set.
 void FAST_FUNC die_if_ferror(FILE *fp, const char *fn)
 {
diff --git a/printutils/lpr.c b/printutils/lpr.c
index fb7860d41..284917926 100644
--- a/printutils/lpr.c
+++ b/printutils/lpr.c
@@ -159,9 +159,7 @@ int lpqr_main(int argc UNUSED_PARAM, char *argv[])
                 // if data file is stdin, we need to dump it first
                 if (LONE_DASH(*argv)) {
                         strcpy(tempfile, "/tmp/lprXXXXXX");
-                        dfd = mkstemp(tempfile);
-                        if (dfd < 0)
-                                bb_perror_msg_and_die("mkstemp");
+                        dfd = xmkstemp(tempfile);
                         bb_copyfd_eof(STDIN_FILENO, dfd);
                         xlseek(dfd, 0, SEEK_SET);
                         *argv = (char*)bb_msg_standard_input;