[git commit master] modprobe: remove 2k limit on /proc/cmdline
Denys Vlasenko
vda.linux at googlemail.com
Wed Mar 3 03:20:33 UTC 2010
commit: http://git.busybox.net/busybox/commit/?id=197202d435bcb3df7268c8fbb66c05ff78e645ac
branch: http://git.busybox.net/busybox/commit/?id=refs/heads/master
function old new delta
do_modprobe 365 520 +155
parse_and_add_kcmdline_module_options 149 - -149
Signed-off-by: Denys Vlasenko <vda.linux at googlemail.com>
---
modutils/modprobe.c | 12 +++++-------
1 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/modutils/modprobe.c b/modutils/modprobe.c
index 0cfb365..f511bc2 100644
--- a/modutils/modprobe.c
+++ b/modutils/modprobe.c
@@ -230,20 +230,17 @@ static const char *humanly_readable_name(struct module_entry *m)
static char *parse_and_add_kcmdline_module_options(char *options, const char *modulename)
{
- /* defined in arch/<architecture>/include/asm/setup.h
- * (maximum is 2048 for IA64 and SPARC) */
- char kcmdline_buf[2048];
+ char *kcmdline_buf;
char *kcmdline;
char *kptr;
int len;
- len = open_read_close("/proc/cmdline", kcmdline_buf, 2047);
- if (len <= 0)
+ kcmdline_buf = xmalloc_open_read_close("/proc/cmdline", NULL);
+ if (!kcmdline_buf)
return options;
- kcmdline_buf[len] = '\0';
- len = strlen(modulename);
kcmdline = kcmdline_buf;
+ len = strlen(modulename);
while ((kptr = strsep(&kcmdline, "\n\t ")) != NULL) {
if (strncmp(modulename, kptr, len) != 0)
continue;
@@ -257,6 +254,7 @@ static char *parse_and_add_kcmdline_module_options(char *options, const char *mo
options = gather_options_str(options, kptr);
}
}
+ free(kcmdline_buf);
return options;
}
--
1.6.3.3
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