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modprobe/insmod: fix parameter quoting

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function                                             old     new   delta
parse_cmdline_module_options                         102     157     +55
modprobe_main                                        657     662      +5
insmod_main                                           68      70      +2
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(add/remove: 0/0 grow/shrink: 3/0 up/down: 62/0)               Total: 62 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2011-02-02 00:00:36 +01:00
parent 8ae386bf19
commit c5830bdf65
4 changed files with 28 additions and 10 deletions
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32
modutils/modutils.c
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@ -62,7 +62,7 @@ char* FAST_FUNC filename2modname(const char *filename, char *modname)
return modname;
}
char* FAST_FUNC parse_cmdline_module_options(char **argv)
char* FAST_FUNC parse_cmdline_module_options(char **argv, int quote_spaces)
{
char *options;
int optlen;
@ -70,13 +70,31 @@ char* FAST_FUNC parse_cmdline_module_options(char **argv)
options = xzalloc(1);
optlen = 0;
while (*++argv) {
options = xrealloc(options, optlen + 2 + strlen(*argv) + 2);
/* Spaces handled by "" pairs, but no way of escaping quotes */
//TODO: module-init-tools version 3.11.1 quotes only value:
//it generates var="val with spaces", not "var=val with spaces"
//(and it won't quote var *name* even if it has spaces)
optlen += sprintf(options + optlen, (strchr(*argv, ' ') ? "\"%s\" " : "%s "), *argv);
const char *fmt;
const char *var;
const char *val;
var = *argv;
options = xrealloc(options, optlen + 2 + strlen(var) + 2);
fmt = "%.*s%s ";
val = strchrnul(var, '=');
if (quote_spaces) {
/*
* modprobe (module-init-tools version 3.11.1) compat:
* quote only value:
* var="val with spaces", not "var=val with spaces"
* (note: var *name* is not checked for spaces!)
*/
if (*val) { /* has var=val format. skip '=' */
val++;
if (strchr(val, ' '))
fmt = "%.*s\"%s\" ";
}
}
optlen += sprintf(options + optlen, fmt, (int)(val - var), var, val);
}
/* Remove trailing space. Disabled */
/* if (optlen != 0) options[optlen-1] = '\0'; */
return options;
}