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ed: Use snprintf() for constructing the scratch filename

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sin 2016-01-02 10:32:44 +00:00
parent 3300d5d47a
commit 16159a61ac
1 changed files with 6 additions and 6 deletions
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12
ed.c
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@ -328,17 +328,17 @@ clearbuf()
static void static void
setscratch() setscratch()
{ {
int k; int r, k;
char *dir; char *dir;
clearbuf(); clearbuf();
clearundo(); clearundo();
if ((dir = getenv("TMPDIR")) == NULL) if ((dir = getenv("TMPDIR")) == NULL)
dir = "/tmp/"; dir = "/tmp";
if (strlcpy(tmpname, dir, sizeof(tmpname)) >= sizeof(tmpname)) r = snprintf(tmpname, sizeof(tmpname), "%s/%s",
error("scratch file name too long"); dir, "ed.XXXXXX");
if (strlcat(tmpname, "ed.XXXXXX", sizeof(tmpname)) >= sizeof(tmpname)) if (r < 0 || (size_t)r >= sizeof(tmpname))
error("scratch file name too long"); error("scratch filename too long");
if ((scratch = mkstemp(tmpname)) < 0) if ((scratch = mkstemp(tmpname)) < 0)
error("failed to create scratch file"); error("failed to create scratch file");
if ((k = makeline("", NULL))) if ((k = makeline("", NULL)))