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- Use strlcat() instead of strncat().

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- Use asprintf() and handle allocation errors.

Reviewed by:	kevlo
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D11486
This commit is contained in:
Xin LI 2017-07-07 02:48:55 +00:00
parent 3ab05e8674
commit 95595f99b9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=320761
1 changed files with 6 additions and 6 deletions
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12
sbin/init/init.c
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@ -1271,8 +1271,8 @@ new_session(session_t *sprev, struct ttyent *typ)
sp->se_flags |= SE_PRESENT;
sp->se_device = malloc(sizeof(_PATH_DEV) + strlen(typ->ty_name));
sprintf(sp->se_device, "%s%s", _PATH_DEV, typ->ty_name);
if (asprintf(&sp->se_device, "%s%s", _PATH_DEV, typ->ty_name) < 0)
err(1, "asprintf");
/*
* Attempt to open the device, if we get "device not configured"
@ -1315,8 +1315,8 @@ setupargv(session_t *sp, struct ttyent *typ)
free(sp->se_getty_argv_space);
free(sp->se_getty_argv);
}
sp->se_getty = malloc(strlen(typ->ty_getty) + strlen(typ->ty_name) + 2);
sprintf(sp->se_getty, "%s %s", typ->ty_getty, typ->ty_name);
if (asprintf(&sp->se_getty, "%s %s", typ->ty_getty, typ->ty_name) < 0)
err(1, "asprintf");
sp->se_getty_argv_space = strdup(sp->se_getty);
sp->se_getty_argv = construct_argv(sp->se_getty_argv_space);
if (sp->se_getty_argv == NULL) {
@ -1429,7 +1429,7 @@ start_window_system(session_t *sp)
if (sp->se_type) {
/* Don't use malloc after fork */
strcpy(term, "TERM=");
strncat(term, sp->se_type, sizeof(term) - 6);
strlcat(term, sp->se_type, sizeof(term));
env[0] = term;
env[1] = 0;
}
@ -1493,7 +1493,7 @@ start_getty(session_t *sp)
if (sp->se_type) {
/* Don't use malloc after fork */
strcpy(term, "TERM=");
strncat(term, sp->se_type, sizeof(term) - 6);
strlcat(term, sp->se_type, sizeof(term));
env[0] = term;
env[1] = 0;
} else