diff options
Diffstat (limited to 'modutils/modprobe-small.c')
| -rw-r--r-- | modutils/modprobe-small.c | 75 |
1 files changed, 57 insertions, 18 deletions
diff --git a/modutils/modprobe-small.c b/modutils/modprobe-small.c index 72209610a..1a9d98422 100644 --- a/modutils/modprobe-small.c +++ b/modutils/modprobe-small.c @@ -33,7 +33,8 @@ enum { typedef struct module_info { char *pathname; - char *desc; + char *aliases; + char *deps; } module_info; /* @@ -209,7 +210,7 @@ static int load_module(const char *fname, const char *options) #endif } -static char* parse_module(const char *pathname) +static void parse_module(module_info *info, const char *pathname) { char *module_image; char *ptr; @@ -220,11 +221,10 @@ static char* parse_module(const char *pathname) /* Read (possibly compressed) module */ len = 64 * 1024 * 1024; /* 64 Mb at most */ module_image = read_module(pathname, &len); +//TODO: optimize redundant module body reads + /* "alias1 symbol:sym1 alias2 symbol:sym2" */ reset_stringbuf(); - - /* First desc line's format is - * "alias1 symbol:sym1 alias2 symbol:sym2" */ pos = 0; while (1) { ptr = find_keyword(module_image + pos, len - pos, "alias="); @@ -247,8 +247,10 @@ static char* parse_module(const char *pathname) } bksp(); /* remove last ' ' */ appendc('\0'); + info->aliases = copy_stringbuf(); - /* Second line: "dependency1 depandency2" */ + /* "dependency1 depandency2" */ + reset_stringbuf(); ptr = find_keyword(module_image, len, "depends="); if (ptr && *ptr) { replace(ptr, ',', ' '); @@ -257,9 +259,9 @@ static char* parse_module(const char *pathname) append(ptr); } appendc('\0'); + info->deps = copy_stringbuf(); free(module_image); - return copy_stringbuf(); } static int pathname_matches_modname(const char *pathname, const char *modname) @@ -294,9 +296,8 @@ static FAST_FUNC int fileAction(const char *pathname, modinfo = xrealloc_vector(modinfo, 12, cur); //TODO: use zeroing version of xrealloc_vector? modinfo[cur].pathname = xstrdup(pathname); - modinfo[cur].desc = NULL; + modinfo[cur].aliases = NULL; modinfo[cur+1].pathname = NULL; - modinfo[cur+1].desc = NULL; if (!pathname_matches_modname(fname, modname_to_match)) { dbg1_error_msg("'%s' module name doesn't match", pathname); @@ -305,7 +306,7 @@ static FAST_FUNC int fileAction(const char *pathname, dbg1_error_msg("'%s' module name matches", pathname); module_found_idx = cur; - modinfo[cur].desc = parse_module(pathname); + parse_module(&modinfo[cur], pathname); if (!(option_mask32 & OPT_r)) { if (load_module(pathname, module_load_options) == 0) { @@ -319,6 +320,43 @@ static FAST_FUNC int fileAction(const char *pathname, return TRUE; } +static void load_dep_bb(void) +{ + char *line; + FILE *fp = fopen(DEPFILE_BB, "r"); + + if (!fp) + return; + + while ((line = xmalloc_fgetline(fp)) != NULL) { + char* space; + int cur; + + if (!line[0]) { + free(line); + continue; + } + space = strchrnul(line, ' '); + cur = module_count++; + modinfo = xrealloc_vector(modinfo, 12, cur); +//TODO: use zeroing version of xrealloc_vector? + modinfo[cur+1].pathname = NULL; + modinfo[cur].pathname = line; /* we take ownership of malloced block here */ + if (*space) + *space++ = '\0'; + modinfo[cur].aliases = space; + modinfo[cur].deps = xmalloc_fgetline(fp) ? : xzalloc(1); + if (modinfo[cur].deps[0]) { + /* deps are not "", so next line must be empty */ + line = xmalloc_fgetline(fp); + /* Refuse to work with damaged config file */ + if (line && line[0]) + bb_error_msg_and_die("error in %s at '%s'", DEPFILE_BB, line); + free(line); + } + } +} + static module_info* find_alias(const char *alias) { int i; @@ -330,8 +368,9 @@ static module_info* find_alias(const char *alias) if (pathname_matches_modname(modinfo[i].pathname, alias)) { dbg1_error_msg("found '%s' in module '%s'", alias, modinfo[i].pathname); - if (!modinfo[i].desc) - modinfo[i].desc = parse_module(modinfo[i].pathname); + if (!modinfo[i].aliases) { + parse_module(&modinfo[i], modinfo[i].pathname); + } return &modinfo[i]; } i++; @@ -341,11 +380,11 @@ static module_info* find_alias(const char *alias) i = 0; while (modinfo[i].pathname) { char *desc, *s; - if (!modinfo[i].desc) { - modinfo[i].desc = parse_module(modinfo[i].pathname); + if (!modinfo[i].aliases) { + parse_module(&modinfo[i], modinfo[i].pathname); } /* "alias1 symbol:sym1 alias2 symbol:sym2" */ - desc = str_2_list(modinfo[i].desc); + desc = str_2_list(modinfo[i].aliases); /* Does matching substring exist? */ for (s = desc; *s; s += strlen(s) + 1) { /* Aliases in module bodies can be defined with @@ -475,10 +514,8 @@ static void process_module(char *name, const char *cmdline_options) goto ret; } - /* Second line of desc contains dependencies */ - deps = str_2_list(info->desc + strlen(info->desc) + 1); - /* Iterate thru dependencies, trying to (un)load them */ + deps = str_2_list(info->deps); for (s = deps; *s; s += strlen(s) + 1) { //if (strcmp(name, s) != 0) // N.B. do loops exist? dbg1_error_msg("recurse on dep '%s'", s); @@ -600,6 +637,8 @@ int modprobe_main(int argc UNUSED_PARAM, char **argv) argv[1] = NULL; #endif + load_dep_bb(); + /* Load/remove modules. * Only rmmod loops here, insmod/modprobe has only argv[0] */ do { |