Introduce the GLOB_MAXPATH flag, which allows the user to limit the

number of paths which glob(3) will return.  Remove the hardcoded limit
from the last commit, which restores the previous unbounded behavior.

Document the new flag in the manual page.

1 files changed, 17 insertions, 0 deletions

diff --git a/lib/libc/gen/glob.3 b/lib/libc/gen/glob.3
index c643aaa..efc413c 100644
--- a/lib/libc/gen/glob.3
+++ b/lib/libc/gen/glob.3
@@ -260,6 +260,14 @@ character, avoiding any special interpretation of the character.
 Expand patterns that start with
 .Ql ~
 to user name home directories.
+.It Dv GLOB_MAXPATH
+Limit the total number of returned pathnames to the value provided in
+.Fa gl_matchc .
+If
+.Fn glob
+would match more pathnames,
+.Dv GLOB_LIMIT
+will be returned.
 .El
 .Pp
 If, during the search, a directory is encountered that cannot be opened
@@ -376,6 +384,14 @@ The scan was stopped because an error was encountered and either
 was set or
 .Fa \*(lp*errfunc\*(rp\*(lp\*(rp
 returned non-zero.
+.It Dv GLOB_LIMIT
+The flag
+.Dv GLOB_MAXPATH 
+was provided, and the specified limit passed to
+.Fn glob
+in
+.Fa pglob\->gl_matchc
+was reached.
 .El
 .Pp
 The arguments
@@ -412,6 +428,7 @@ that the flags
 .Dv GLOB_ALTDIRFUNC ,
 .Dv GLOB_BRACE ,
 .Dv GLOB_MAGCHAR ,
+.Dv GLOB_MAXPATH ,
 .Dv GLOB_NOMAGIC ,
 .Dv GLOB_QUOTE ,
 and