[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/build/uClibc/libc/misc/internals/tempname.c b/ap/build/uClibc/libc/misc/internals/tempname.c
new file mode 100644
index 0000000..28c0098
--- /dev/null
+++ b/ap/build/uClibc/libc/misc/internals/tempname.c
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+/* Copyright (C) 1991,92,93,94,95,96,97,98,99 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+/* March 11, 2002 Manuel Novoa III
+ *
+ * Modify code to remove dependency on libgcc long long arith support funcs.
+ */
+
+/* June 6, 2004 Erik Andersen
+ *
+ * Don't use brain damaged getpid() based randomness.
+ */
+
+/* April 15, 2005 Mike Frysinger
+ *
+ * Use brain damaged getpid() if real random fails.
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <assert.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include "tempname.h"
+
+/* Return nonzero if DIR is an existent directory. */
+static int direxists (const char *dir)
+{
+ struct stat buf;
+ return stat(dir, &buf) == 0 && S_ISDIR (buf.st_mode);
+}
+
+/* Path search algorithm, for tmpnam, tmpfile, etc. If DIR is
+ non-null and exists, uses it; otherwise uses the first of $TMPDIR,
+ P_tmpdir, /tmp that exists. Copies into TMPL a template suitable
+ for use with mk[s]temp. Will fail (-1) if DIR is non-null and
+ doesn't exist, none of the searched dirs exists, or there's not
+ enough space in TMPL. */
+int attribute_hidden ___path_search (char *tmpl, size_t tmpl_len, const char *dir,
+ const char *pfx /*, int try_tmpdir*/)
+{
+ /*const char *d; */
+ /* dir and pfx lengths should always fit into an int,
+ so don't bother using size_t here. Especially since
+ the printf func requires an int for precision (%*s). */
+ int dlen, plen;
+
+ if (!pfx || !pfx[0])
+ {
+ pfx = "file";
+ plen = 4;
+ }
+ else
+ {
+ plen = strlen (pfx);
+ if (plen > 5)
+ plen = 5;
+ }
+
+ /* Disable support for $TMPDIR */
+#if 0
+ if (try_tmpdir)
+ {
+ d = __secure_getenv ("TMPDIR");
+ if (d != NULL && direxists (d))
+ dir = d;
+ else if (dir != NULL && direxists (dir))
+ /* nothing */ ;
+ else
+ dir = NULL;
+ }
+#endif
+ if (dir == NULL)
+ {
+ if (direxists (P_tmpdir))
+ dir = P_tmpdir;
+ else if (strcmp (P_tmpdir, "/tmp") != 0 && direxists ("/tmp"))
+ dir = "/tmp";
+ else
+ {
+ __set_errno (ENOENT);
+ return -1;
+ }
+ }
+
+ dlen = strlen (dir);
+ while (dlen > 1 && dir[dlen - 1] == '/')
+ dlen--; /* remove trailing slashes */
+
+ /* check we have room for "${dir}/${pfx}XXXXXX\0" */
+ if (tmpl_len < (size_t)dlen + 1 + plen + 6 + 1)
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ sprintf (tmpl, "%.*s/%.*sXXXXXX", dlen, dir, plen, pfx);
+ return 0;
+}
+
+/* These are the characters used in temporary filenames. */
+static const char letters[] =
+"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+#define NUM_LETTERS (62)
+
+static unsigned int fillrand(unsigned char *buf, unsigned int len)
+{
+ int fd;
+ unsigned int result = -1;
+ fd = open("/dev/urandom", O_RDONLY);
+ if (fd < 0) {
+ fd = open("/dev/random", O_RDONLY | O_NONBLOCK);
+ }
+ if (fd >= 0) {
+ result = read(fd, buf, len);
+ close(fd);
+ }
+ return result;
+}
+
+static void brain_damaged_fillrand(unsigned char *buf, unsigned int len)
+{
+ unsigned int i, k;
+ struct timeval tv;
+ uint32_t high, low, rh;
+ static uint64_t value;
+ gettimeofday(&tv, NULL);
+ value += ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec ^ getpid();
+ low = value & UINT32_MAX;
+ high = value >> 32;
+ for (i = 0; i < len; ++i) {
+ rh = high % NUM_LETTERS;
+ high /= NUM_LETTERS;
+#define L ((UINT32_MAX % NUM_LETTERS + 1) % NUM_LETTERS)
+ k = (low % NUM_LETTERS) + (L * rh);
+#undef L
+#define H ((UINT32_MAX / NUM_LETTERS) + ((UINT32_MAX % NUM_LETTERS + 1) / NUM_LETTERS))
+ low = (low / NUM_LETTERS) + (H * rh) + (k / NUM_LETTERS);
+#undef H
+ k %= NUM_LETTERS;
+ buf[i] = letters[k];
+ }
+}
+
+/* Generate a temporary file name based on TMPL. TMPL must match the
+ rules for mk[s]temp (i.e. end in "XXXXXX"). The name constructed
+ does not exist at the time of the call to __gen_tempname. TMPL is
+ overwritten with the result.
+
+ KIND may be one of:
+ __GT_NOCREATE: simply verify that the name does not exist
+ at the time of the call. mode argument is ignored.
+ __GT_FILE: create the file using open(O_CREAT|O_EXCL)
+ and return a read-write fd with given mode.
+ __GT_BIGFILE: same as __GT_FILE but use open64().
+ __GT_DIR: create a directory with given mode.
+
+*/
+int attribute_hidden __gen_tempname (char *tmpl, int kind, mode_t mode)
+{
+ char *XXXXXX;
+ unsigned int i;
+ int fd, save_errno = errno;
+ unsigned char randomness[6];
+ size_t len;
+
+ len = strlen (tmpl);
+ /* This is where the Xs start. */
+ XXXXXX = tmpl + len - 6;
+ if (len < 6 || strcmp (XXXXXX, "XXXXXX"))
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ for (i = 0; i < TMP_MAX; ++i) {
+ unsigned char j;
+ /* Get some random data. */
+ if (fillrand(randomness, sizeof(randomness)) != sizeof(randomness)) {
+ /* if random device nodes failed us, lets use the braindamaged ver */
+ brain_damaged_fillrand(randomness, sizeof(randomness));
+ }
+ for (j = 0; j < sizeof(randomness); ++j)
+ XXXXXX[j] = letters[randomness[j] % NUM_LETTERS];
+
+ switch (kind) {
+ case __GT_NOCREATE:
+ {
+ struct stat st;
+ if (stat (tmpl, &st) < 0) {
+ if (errno == ENOENT) {
+ fd = 0;
+ goto restore_and_ret;
+ } else
+ /* Give up now. */
+ return -1;
+ } else
+ fd = 0;
+ }
+ case __GT_FILE:
+ fd = open (tmpl, O_RDWR | O_CREAT | O_EXCL, mode);
+ break;
+#if defined __UCLIBC_HAS_LFS__
+ case __GT_BIGFILE:
+ fd = open64 (tmpl, O_RDWR | O_CREAT | O_EXCL, mode);
+ break;
+#endif
+ case __GT_DIR:
+ fd = mkdir (tmpl, mode);
+ break;
+ default:
+ fd = -1;
+ assert (! "invalid KIND in __gen_tempname");
+ }
+
+ if (fd >= 0) {
+restore_and_ret:
+ __set_errno (save_errno);
+ return fd;
+ }
+ else if (errno != EEXIST)
+ /* Any other error will apply also to other names we might
+ try, and there are 2^32 or so of them, so give up now. */
+ return -1;
+ }
+
+ /* We got out of the loop because we ran out of combinations to try. */
+ __set_errno (EEXIST);
+ return -1;
+}