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modprobe: remove 2k limit on /proc/cmdline

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function                                             old     new   delta
do_modprobe                                          365     520    +155
parse_and_add_kcmdline_module_options                149       -    -149

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2010-03-03 04:20:33 +01:00
parent 9341fd2d30
commit 197202d435
1 changed files with 5 additions and 7 deletions
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12
modutils/modprobe.c
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@ -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;
}