From bbd695d8010ab453a5a89ba6d7ebfe1a96b87b7d Mon Sep 17 00:00:00 2001 From: Denis Vlasenko Date: Sun, 8 Apr 2007 10:52:28 +0000 Subject: find: fix handling of -prune recursive_actions: uppercase flag constants --- findutils/find.c | 68 ++++++++++++++++++++++++++++++++------------------------ findutils/grep.c | 6 ++--- 2 files changed, 42 insertions(+), 32 deletions(-) (limited to 'findutils') diff --git a/findutils/find.c b/findutils/find.c index 4312025..3eea53d 100644 --- a/findutils/find.c +++ b/findutils/find.c @@ -70,7 +70,7 @@ USE_FEATURE_FIND_MTIME( ACTS(mtime, char mtime_char; unsigned mtime_days;)) USE_FEATURE_FIND_MMIN( ACTS(mmin, char mmin_char; unsigned mmin_mins;)) USE_FEATURE_FIND_NEWER( ACTS(newer, time_t newer_mtime;)) USE_FEATURE_FIND_INUM( ACTS(inum, ino_t inode_num;)) -USE_FEATURE_FIND_EXEC( ACTS(exec, char **exec_argv; unsigned int *subst_count; int exec_argc;)) +USE_FEATURE_FIND_EXEC( ACTS(exec, char **exec_argv; unsigned *subst_count; int exec_argc;)) USE_FEATURE_FIND_USER( ACTS(user, uid_t uid;)) USE_FEATURE_FIND_GROUP( ACTS(group, gid_t gid;)) USE_FEATURE_FIND_PAREN( ACTS(paren, action ***subexpr;)) @@ -79,12 +79,12 @@ USE_FEATURE_FIND_PRUNE( ACTS(prune)) static action ***actions; static bool need_print = 1; -static int recurse_flags = action_recurse; +static int recurse_flags = ACTION_RECURSE; #if ENABLE_FEATURE_FIND_EXEC -static unsigned int count_subst(const char *str) +static unsigned count_subst(const char *str) { - unsigned int count = 0; + unsigned count = 0; while ((str = strstr(str, "{}"))) { count++; str++; @@ -93,7 +93,7 @@ static unsigned int count_subst(const char *str) } -static char* subst(const char *src, unsigned int count, const char* filename) +static char* subst(const char *src, unsigned count, const char* filename) { char *buf, *dst, *end; size_t flen = strlen(filename); @@ -111,6 +111,10 @@ static char* subst(const char *src, unsigned int count, const char* filename) } #endif +/* Return values of ACTFs ('action functions') are a bit mask: + * bit 1=1: prune (use SKIP constant for setting it) + * bit 0=1: matched successfully (TRUE) + */ static int exec_actions(action ***appp, const char *fileName, struct stat *statbuf) { @@ -121,24 +125,24 @@ static int exec_actions(action ***appp, const char *fileName, struct stat *statb cur_group = -1; while ((app = appp[++cur_group])) { + /* We invert TRUE bit (bit 0). Now 1 there means 'failure'. + * and bitwise OR in "rc |= TRUE ^ ap->f()" will: + * (1) make SKIP bit stick; and (2) detect 'failure' */ + rc = 0; /* 'success' so far */ cur_action = -1; while (1) { ap = app[++cur_action]; - if (!ap) { - /* all actions in group were successful */ - return rc; - } - rc = ap->f(fileName, statbuf, ap); + if (!ap) /* all actions in group were successful */ + return rc ^ TRUE; + rc |= TRUE ^ ap->f(fileName, statbuf, ap); #if ENABLE_FEATURE_FIND_NOT - if (ap->invert) rc = !rc; + if (ap->invert) rc ^= TRUE; #endif - if (!rc) { - /* current group failed, try next */ + if (rc & TRUE) /* current group failed, try next */ break; - } } } - return rc; + return rc ^ TRUE; /* straighten things out */ } @@ -147,8 +151,16 @@ ACTF(name) const char *tmp = strrchr(fileName, '/'); if (tmp == NULL) tmp = fileName; - else + else { tmp++; + if (!*tmp) { /* "foo/bar/". Oh no... go back to 'b' */ + tmp--; + while (tmp != fileName && *--tmp != '/') + continue; + if (*tmp == '/') + tmp++; + } + } return fnmatch(ap->pattern, tmp, FNM_PERIOD) == 0; } #if ENABLE_FEATURE_FIND_TYPE @@ -269,7 +281,7 @@ ACTF(paren) */ ACTF(prune) { - return SKIP; + return SKIP + TRUE; } #endif @@ -284,7 +296,7 @@ ACTF(size) static int fileAction(const char *fileName, struct stat *statbuf, void* junk, int depth) { int i; -#ifdef CONFIG_FEATURE_FIND_XDEV +#if ENABLE_FEATURE_FIND_XDEV if (S_ISDIR(statbuf->st_mode) && xdev_count) { for (i = 0; i < xdev_count; i++) { if (xdev_dev[i] != statbuf->st_dev) @@ -294,11 +306,11 @@ static int fileAction(const char *fileName, struct stat *statbuf, void* junk, in #endif i = exec_actions(actions, fileName, statbuf); /* Had no explicit -print[0] or -exec? then print */ - if (i && need_print) + if ((i & TRUE) && need_print) puts(fileName); /* Cannot return 0: our caller, recursive_action(), * will perror() and skip dirs (if called on dir) */ - return i == 0 ? TRUE : i; + return (i & SKIP) ? SKIP : TRUE; } @@ -386,8 +398,8 @@ static action*** parse_params(char **argv) USE_FEATURE_FIND_GROUP( "-group" ,) USE_FEATURE_FIND_DEPTH( "-depth" ,) USE_FEATURE_FIND_PAREN( "(" ,) - USE_FEATURE_FIND_SIZE( "-size" ,) - USE_FEATURE_FIND_PRUNE( "-prune" ,) + USE_FEATURE_FIND_SIZE( "-size" ,) + USE_FEATURE_FIND_PRUNE( "-prune" ,) #if ENABLE_DESKTOP "-and" , "-or" , @@ -486,8 +498,7 @@ static action*** parse_params(char **argv) } #endif #if ENABLE_FEATURE_FIND_PERM -/* TODO: - * -perm mode File's permission bits are exactly mode (octal or symbolic). +/* -perm mode File's permission bits are exactly mode (octal or symbolic). * Symbolic modes use mode 0 as a point of departure. * -perm -mode All of the permission bits mode are set for the file. * -perm +mode Any of the permission bits mode are set for the file. @@ -554,7 +565,7 @@ static action*** parse_params(char **argv) ap->exec_argv = ++argv; /* first arg after -exec */ ap->exec_argc = 0; while (1) { - if (!*argv) /* did not see ';' util end */ + if (!*argv) /* did not see ';' until end */ bb_error_msg_and_die(bb_msg_requires_arg, arg); if (LONE_CHAR(argv[0], ';')) break; @@ -593,7 +604,7 @@ static action*** parse_params(char **argv) #endif #if ENABLE_FEATURE_FIND_DEPTH else if (parm == PARM_depth) { - recurse_flags |= action_depthFirst; + recurse_flags |= ACTION_DEPTHFIRST; } #endif #if ENABLE_FEATURE_FIND_PAREN @@ -652,7 +663,6 @@ USE_FEATURE_FIND_XDEV( "-xdev", ) NULL }; - bool dereference = FALSE; char *arg; char **argp; int i, firstopt, status = EXIT_SUCCESS; @@ -684,7 +694,7 @@ USE_FEATURE_FIND_XDEV( "-xdev", ) while ((arg = argp[0])) { i = index_in_str_array(options, arg); if (i == 0) { /* -follow */ - dereference = TRUE; + recurse_flags |= ACTION_FOLLOWLINKS; argp[0] = (char*)"-a"; } #if ENABLE_FEATURE_FIND_XDEV @@ -711,7 +721,7 @@ USE_FEATURE_FIND_XDEV( "-xdev", ) for (i = 1; i < firstopt; i++) { if (!recursive_action(argv[i], - recurse_flags|(1<