sbase

suckless unix tools
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commit 3f3e15b31497d59985afb4813396cf9d04aaf68d
parent aed987a9af13b44523012844cc80eae19e591194
Author: sin <sin@2f30.org>
Date:   Wed, 11 Feb 2015 11:51:57 +0000

readlink: Use strlcat() instead of strncat()

Diffstat:
readlink.c | 6++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/readlink.c b/readlink.c @@ -57,7 +57,8 @@ main(int argc, char *argv[]) arg[2] = '\0'; } else arg[0] = '\0'; - strncat(arg, argv[0], PATH_MAX); + if (strlcat(arg, argv[0], PATH_MAX) >= PATH_MAX) + eprintf("path too long\n"); while ((p = strchr(p, '/'))) { *p = '\0'; if (!realpath(arg, b)) { @@ -75,7 +76,8 @@ mdone: /* drop the extra '/' on root */ lp += (argv[0][0] == '/' && lp - arg == 1); - strncat(b, lp, PATH_MAX); + if (strlcat(b, lp, PATH_MAX) >= PATH_MAX) + eprintf("path too long\n"); } } break;