When following symlinks to the real executable, use a loop so a

gvanrossum · gvanrossum · commit 302be44e96f1 · 1998-04-29T21:07:06.000Z
symlink to a symlink can work.
(Jack)
diff --git a/Modules/getpath.c b/Modules/getpath.c
@@ -437,7 +437,7 @@ calculate_path()
 	{
 		char tmpbuffer[MAXPATHLEN+1];
 		int linklen = readlink(progpath, tmpbuffer, MAXPATHLEN);
-		if (linklen != -1) {
+		while (linklen != -1) {
 			/* It's not null terminated! */
 			tmpbuffer[linklen] = '\0';
 			if (tmpbuffer[0] == SEP)
@@ -447,6 +447,7 @@ calculate_path()
 				reduce(argv0_path);
 				joinpath(argv0_path, tmpbuffer);
 			}
+			linklen = readlink(argv0_path, tmpbuffer, MAXPATHLEN);
 		}
 	}
 #endif /* HAVE_READLINK */

Original file line number	Diff line number	Diff line change
`@@ -437,7 +437,7 @@ calculate_path()`
`437`	`437`	`{`
`438`	`438`	`char tmpbuffer[MAXPATHLEN+1];`
`439`	`439`	`int linklen = readlink(progpath, tmpbuffer, MAXPATHLEN);`
`440`		`- if (linklen != -1) {`
	`440`	`+ while (linklen != -1) {`
`441`	`441`	`/* It's not null terminated! */`
`442`	`442`	`tmpbuffer[linklen] = '\0';`
`443`	`443`	`if (tmpbuffer[0] == SEP)`
`@@ -447,6 +447,7 @@ calculate_path()`
`447`	`447`	`reduce(argv0_path);`
`448`	`448`	`joinpath(argv0_path, tmpbuffer);`
`449`	`449`	`}`
	`450`	`+ linklen = readlink(argv0_path, tmpbuffer, MAXPATHLEN);`
`450`	`451`	`}`
`451`	`452`	`}`
`452`	`453`	`#endif /* HAVE_READLINK */`