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authorJim Blandy <jimb@codesourcery.com>2004-09-22 18:49:07 +0000
committerJim Blandy <jimb@codesourcery.com>2004-09-22 18:49:07 +0000
commitc182e1c896482e9645589b7fe00637637f5fd8ee (patch)
treef36b5da2ab92cefdda813b59897bd952a9208272 /libiberty/tmpnam.c
parent148551e5315b1908ddedeb35c817900fd915675b (diff)
downloadgdb-c182e1c896482e9645589b7fe00637637f5fd8ee.tar.gz
* dwarf2loc.c (dwarf2_evaluate_loc_desc): Fix misapplied patch.
Diffstat (limited to 'libiberty/tmpnam.c')
-rw-r--r--libiberty/tmpnam.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/libiberty/tmpnam.c b/libiberty/tmpnam.c
new file mode 100644
index 00000000000..406878c49a3
--- /dev/null
+++ b/libiberty/tmpnam.c
@@ -0,0 +1,53 @@
+/*
+
+@deftypefn Supplemental char* tmpnam (char *@var{s})
+
+This function attempts to create a name for a temporary file, which
+will be a valid file name yet not exist when @code{tmpnam} checks for
+it. @var{s} must point to a buffer of at least @code{L_tmpnam} bytes,
+or be @code{NULL}. Use of this function creates a security risk, and it must
+not be used in new projects. Use @code{mkstemp} instead.
+
+@end deftypefn
+
+*/
+
+#include <stdio.h>
+
+#ifndef L_tmpnam
+#define L_tmpnam 100
+#endif
+#ifndef P_tmpdir
+#define P_tmpdir "/usr/tmp"
+#endif
+
+static char tmpnam_buffer[L_tmpnam];
+static int tmpnam_counter;
+
+extern int getpid ();
+
+char *
+tmpnam (s)
+ char *s;
+{
+ int pid = getpid ();
+
+ if (s == NULL)
+ s = tmpnam_buffer;
+
+ /* Generate the filename and make sure that there isn't one called
+ it already. */
+
+ while (1)
+ {
+ FILE *f;
+ sprintf (s, "%s/%s%x.%x", P_tmpdir, "t", pid, tmpnam_counter);
+ f = fopen (s, "r");
+ if (f == NULL)
+ break;
+ tmpnam_counter++;
+ fclose (f);
+ }
+
+ return s;
+}