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ed: Use TMPDIR to locate the temporal file

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The current behaviour of storing the scratch file in
the current directory is a bit painful, because it
generates files in all the directories where you
execute ed. BSD ed uses TMPDIR for this purpouse,
so if the user wants to put the scratch file in
other place different of /tmp it only has to set
this variable.
This commit is contained in:
Roberto E. Vargas Caballero
2016-01-01 18:25:58 +01:00
committed by sin
parent cf0a0fc940
commit 36e2bdf517
1 changed files with 7 additions and 5 deletions
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12
ed.c
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@@ -329,15 +329,17 @@ static void
setscratch()
{
int k;
char *dir;
clearbuf();
clearundo();
strcpy(tmpname, "ed.XXXXXX");
if ((dir = getenv("TMPDIR")) == NULL)
dir = "/tmp/";
if (strlen(dir) + sizeof("ed.XXXXXX") > FILENAME_MAX)
error("incorrect scratch file name");
strcat(strcpy(tmpname, dir), "ed.XXXXX");
if ((scratch = mkstemp(tmpname)) < 0) {
/* try /tmp if cwd is not writable */
strcpy(tmpname, "/tmp/ed.XXXXXX");
if ((scratch = mkstemp(tmpname)) < 0)
error("failed to create scratch file");
error("failed to create scratch file");
}
if ((k = makeline("", NULL)))
error("input/output error in scratch file");