test: code size saving, no logic changes
ps: fix warning, make a bit smaller kill -l: make smaller & know much more signals function old new delta get_signum 121 153 +32 kill_main 826 843 +17 get_signame 44 36 -8 signals 252 224 -28 .rodata 131955 131923 -32 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/3 up/down: 49/-68) Total: -19 bytes
This commit is contained in:
Denis Vlasenko
parent
f20de5bb42
commit
dcf4de20a1
177
coreutils/test.c
177
coreutils/test.c
@ -85,12 +85,12 @@ enum token {
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RPAREN,
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OPERAND
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};
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#define __is_int_op(a) (((unsigned char)((a) - INTEQ)) <= 5)
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#define __is_str_op(a) (((unsigned char)((a) - STREZ)) <= 5)
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#define __is_file_op(a) (((unsigned char)((a) - FILNT)) <= 2)
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#define __is_file_access(a) (((unsigned char)((a) - FILRD)) <= 2)
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#define __is_file_type(a) (((unsigned char)((a) - FILREG)) <= 5)
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#define __is_file_bit(a) (((unsigned char)((a) - FILSUID)) <= 2)
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#define is_int_op(a) (((unsigned char)((a) - INTEQ)) <= 5)
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#define is_str_op(a) (((unsigned char)((a) - STREZ)) <= 5)
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#define is_file_op(a) (((unsigned char)((a) - FILNT)) <= 2)
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#define is_file_access(a) (((unsigned char)((a) - FILRD)) <= 2)
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#define is_file_type(a) (((unsigned char)((a) - FILREG)) <= 5)
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#define is_file_bit(a) (((unsigned char)((a) - FILSUID)) <= 2)
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enum token_types {
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UNOP,
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BINOP,
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@ -100,64 +100,67 @@ enum token_types {
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};
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static const struct t_op {
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const char * const op_text;
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char op_text[4];
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unsigned char op_num, op_type;
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} ops[] = {
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{
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"-r", FILRD, UNOP}, {
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"-w", FILWR, UNOP}, {
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"-x", FILEX, UNOP}, {
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"-e", FILEXIST, UNOP}, {
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"-f", FILREG, UNOP}, {
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"-d", FILDIR, UNOP}, {
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"-c", FILCDEV, UNOP}, {
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"-b", FILBDEV, UNOP}, {
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"-p", FILFIFO, UNOP}, {
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"-u", FILSUID, UNOP}, {
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"-g", FILSGID, UNOP}, {
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"-k", FILSTCK, UNOP}, {
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"-s", FILGZ, UNOP}, {
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"-t", FILTT, UNOP}, {
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"-z", STREZ, UNOP}, {
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"-n", STRNZ, UNOP}, {
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"-h", FILSYM, UNOP}, /* for backwards compat */
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{
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"-O", FILUID, UNOP}, {
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"-G", FILGID, UNOP}, {
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"-L", FILSYM, UNOP}, {
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"-S", FILSOCK, UNOP}, {
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"=", STREQ, BINOP}, {
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"==", STREQ, BINOP}, {
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"!=", STRNE, BINOP}, {
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"<", STRLT, BINOP}, {
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">", STRGT, BINOP}, {
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"-eq", INTEQ, BINOP}, {
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"-ne", INTNE, BINOP}, {
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"-ge", INTGE, BINOP}, {
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"-gt", INTGT, BINOP}, {
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"-le", INTLE, BINOP}, {
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"-lt", INTLT, BINOP}, {
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"-nt", FILNT, BINOP}, {
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"-ot", FILOT, BINOP}, {
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"-ef", FILEQ, BINOP}, {
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"!", UNOT, BUNOP}, {
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"-a", BAND, BBINOP}, {
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"-o", BOR, BBINOP}, {
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"(", LPAREN, PAREN}, {
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")", RPAREN, PAREN}, {
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0, 0, 0}
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{ "-r", FILRD , UNOP },
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{ "-w", FILWR , UNOP },
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{ "-x", FILEX , UNOP },
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{ "-e", FILEXIST, UNOP },
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{ "-f", FILREG , UNOP },
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{ "-d", FILDIR , UNOP },
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{ "-c", FILCDEV , UNOP },
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{ "-b", FILBDEV , UNOP },
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{ "-p", FILFIFO , UNOP },
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{ "-u", FILSUID , UNOP },
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{ "-g", FILSGID , UNOP },
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{ "-k", FILSTCK , UNOP },
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{ "-s", FILGZ , UNOP },
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{ "-t", FILTT , UNOP },
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{ "-z", STREZ , UNOP },
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{ "-n", STRNZ , UNOP },
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{ "-h", FILSYM , UNOP }, /* for backwards compat */
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{ "-O" , FILUID , UNOP },
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{ "-G" , FILGID , UNOP },
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{ "-L" , FILSYM , UNOP },
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{ "-S" , FILSOCK, UNOP },
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{ "=" , STREQ , BINOP },
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{ "==" , STREQ , BINOP },
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{ "!=" , STRNE , BINOP },
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{ "<" , STRLT , BINOP },
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{ ">" , STRGT , BINOP },
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{ "-eq", INTEQ , BINOP },
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{ "-ne", INTNE , BINOP },
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{ "-ge", INTGE , BINOP },
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{ "-gt", INTGT , BINOP },
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{ "-le", INTLE , BINOP },
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{ "-lt", INTLT , BINOP },
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{ "-nt", FILNT , BINOP },
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{ "-ot", FILOT , BINOP },
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{ "-ef", FILEQ , BINOP },
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{ "!" , UNOT , BUNOP },
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{ "-a" , BAND , BBINOP },
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{ "-o" , BOR , BBINOP },
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{ "(" , LPAREN , PAREN },
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{ ")" , RPAREN , PAREN },
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};
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#ifdef CONFIG_FEATURE_TEST_64
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enum { NUM_OPS = sizeof(ops) / sizeof(ops[0]) };
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#if ENABLE_FEATURE_TEST_64
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typedef int64_t arith_t;
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#else
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typedef int arith_t;
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#endif
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/* Cannot eliminate these static data (do the G trick)
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* because of bb_test usage from other applets */
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static char **t_wp;
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static struct t_op const *t_wp_op;
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static gid_t *group_array;
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static int ngroups;
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static jmp_buf leaving;
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static enum token t_lex(char *s);
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static arith_t oexpr(enum token n);
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@ -176,8 +179,6 @@ static int test_eaccess(char *path, int mode);
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static int is_a_group_member(gid_t gid);
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static void initialize_group_array(void);
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static jmp_buf leaving;
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int bb_test(int argc, char **argv)
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{
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int res;
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@ -210,7 +211,7 @@ int bb_test(int argc, char **argv)
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* isn't likely in the case of a shell. paranoia
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* prevails...
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*/
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ngroups = 0;
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ngroups = 0;
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/* Implement special cases from POSIX.2, section 4.62.4 */
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if (argc == 1)
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@ -223,8 +224,9 @@ int bb_test(int argc, char **argv)
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if (argc == 3)
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return *argv[2] != '\0';
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_off = argc - 4;
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if (t_lex(argv[2+_off]), t_wp_op && t_wp_op->op_type == BINOP) {
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t_wp = &argv[1+_off];
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t_lex(argv[2 + _off]);
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if (t_wp_op && t_wp_op->op_type == BINOP) {
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t_wp = &argv[1 + _off];
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return binop() == 0;
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}
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}
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@ -238,6 +240,7 @@ int bb_test(int argc, char **argv)
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return res;
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}
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static void syntax(const char *op, const char *msg) ATTRIBUTE_NORETURN;
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static void syntax(const char *op, const char *msg)
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{
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if (op && *op) {
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@ -296,20 +299,20 @@ static arith_t primary(enum token n)
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if (*++t_wp == NULL)
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syntax(t_wp_op->op_text, "argument expected");
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if (n == STREZ)
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return strlen(*t_wp) == 0;
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else if (n == STRNZ)
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return strlen(*t_wp) != 0;
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else if (n == FILTT)
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return t_wp[0][0] == '\0';
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if (n == STRNZ)
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return t_wp[0][0] != '\0';
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if (n == FILTT)
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return isatty(getn(*t_wp));
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else
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return filstat(*t_wp, n);
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return filstat(*t_wp, n);
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}
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if (t_lex(t_wp[1]), t_wp_op && t_wp_op->op_type == BINOP) {
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t_lex(t_wp[1]);
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if (t_wp_op && t_wp_op->op_type == BINOP) {
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return binop();
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}
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return strlen(*t_wp) > 0;
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return t_wp[0][0] != '\0';
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}
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static int binop(void)
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@ -322,10 +325,11 @@ static int binop(void)
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(void) t_lex(*++t_wp);
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op = t_wp_op;
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if ((opnd2 = *++t_wp) == (char *) 0)
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opnd2 = *++t_wp;
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if (opnd2 == NULL)
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syntax(op->op_text, "argument expected");
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if (__is_int_op(op->op_num)) {
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if (is_int_op(op->op_num)) {
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val1 = getn(opnd1);
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val2 = getn(opnd2);
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if (op->op_num == INTEQ)
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@ -341,7 +345,7 @@ static int binop(void)
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if (op->op_num == INTLT)
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return val1 < val2;
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}
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if (__is_str_op(op->op_num)) {
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if (is_str_op(op->op_num)) {
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val1 = strcmp(opnd1, opnd2);
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if (op->op_num == STREQ)
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return val1 == 0;
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@ -355,7 +359,7 @@ static int binop(void)
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/* We are sure that these three are by now the only binops we didn't check
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* yet, so we do not check if the class is correct:
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*/
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/* if (__is_file_op(op->op_num)) */
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/* if (is_file_op(op->op_num)) */
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{
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struct stat b1, b2;
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@ -390,7 +394,7 @@ static int filstat(char *nm, enum token mode)
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return 0;
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if (mode == FILEXIST)
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return 1;
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else if (__is_file_access(mode)) {
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if (is_file_access(mode)) {
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if (mode == FILRD)
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i = R_OK;
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if (mode == FILWR)
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@ -399,7 +403,7 @@ static int filstat(char *nm, enum token mode)
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i = X_OK;
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return test_eaccess(nm, i) == 0;
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}
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else if (__is_file_type(mode)) {
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if (is_file_type(mode)) {
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if (mode == FILREG)
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i = S_IFREG;
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if (mode == FILDIR)
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@ -422,10 +426,10 @@ static int filstat(char *nm, enum token mode)
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return 0;
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#endif
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}
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filetype:
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filetype:
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return ((s.st_mode & S_IFMT) == i);
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}
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else if (__is_file_bit(mode)) {
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if (is_file_bit(mode)) {
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if (mode == FILSUID)
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i = S_ISUID;
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if (mode == FILSGID)
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@ -434,33 +438,33 @@ filetype:
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i = S_ISVTX;
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return ((s.st_mode & i) != 0);
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}
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else if (mode == FILGZ)
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if (mode == FILGZ)
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return s.st_size > 0L;
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else if (mode == FILUID)
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if (mode == FILUID)
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return s.st_uid == geteuid();
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else if (mode == FILGID)
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if (mode == FILGID)
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return s.st_gid == getegid();
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else
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return 1; /* NOTREACHED */
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return 1; /* NOTREACHED */
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}
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static enum token t_lex(char *s)
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{
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struct t_op const *op = ops;
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const struct t_op *op;
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if (s == 0) {
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t_wp_op = (struct t_op *) 0;
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t_wp_op = NULL;
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if (s == NULL) {
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return EOI;
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}
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while (op->op_text) {
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op = ops;
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do {
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if (strcmp(s, op->op_text) == 0) {
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t_wp_op = op;
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return op->op_num;
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}
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op++;
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}
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t_wp_op = (struct t_op *) 0;
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} while (op < ops + NUM_OPS);
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return OPERAND;
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}
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@ -469,14 +473,14 @@ static enum token t_lex(char *s)
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static arith_t getn(const char *s)
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{
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char *p;
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#ifdef CONFIG_FEATURE_TEST_64
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#if ENABLE_FEATURE_TEST_64
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long long r;
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#else
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long r;
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#endif
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errno = 0;
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#ifdef CONFIG_FEATURE_TEST_64
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#if ENABLE_FEATURE_TEST_64
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r = strtoll(s, &p, 10);
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#else
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r = strtol(s, &p, 10);
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@ -591,4 +595,3 @@ int test_main(int argc, char **argv)
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{
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return bb_test(argc, argv);
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}
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@ -9,20 +9,111 @@
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#include "libbb.h"
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static const struct signal_name {
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int number;
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char name[5];
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} signals[] = {
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static const char signals[32][7] = {
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// SUSv3 says kill must support these, and specifies the numerical values,
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// http://www.opengroup.org/onlinepubs/009695399/utilities/kill.html
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// TODO: "[SIG]EXIT" shouldn't work for kill, right?
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{0, "EXIT"}, {1, "HUP"}, {2, "INT"}, {3, "QUIT"}, {6, "ABRT"}, {9, "KILL"},
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{14, "ALRM"}, {15, "TERM"},
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// {0, "EXIT"}, {1, "HUP"}, {2, "INT"}, {3, "QUIT"},
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// {6, "ABRT"}, {9, "KILL"}, {14, "ALRM"}, {15, "TERM"}
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// And Posix adds the following:
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{SIGILL, "ILL"}, {SIGTRAP, "TRAP"}, {SIGFPE, "FPE"}, {SIGUSR1, "USR1"},
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{SIGSEGV, "SEGV"}, {SIGUSR2, "USR2"}, {SIGPIPE, "PIPE"}, {SIGCHLD, "CHLD"},
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{SIGCONT, "CONT"}, {SIGSTOP, "STOP"}, {SIGTSTP, "TSTP"}, {SIGTTIN, "TTIN"},
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{SIGTTOU, "TTOU"}
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// {SIGILL, "ILL"}, {SIGTRAP, "TRAP"}, {SIGFPE, "FPE"}, {SIGUSR1, "USR1"},
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// {SIGSEGV, "SEGV"}, {SIGUSR2, "USR2"}, {SIGPIPE, "PIPE"}, {SIGCHLD, "CHLD"},
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// {SIGCONT, "CONT"}, {SIGSTOP, "STOP"}, {SIGTSTP, "TSTP"}, {SIGTTIN, "TTIN"},
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// {SIGTTOU, "TTOU"}
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[0] = "EXIT",
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#ifdef SIGHUP
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[SIGHUP ] = "HUP",
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#endif
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#ifdef SIGINT
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[SIGINT ] = "INT",
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#endif
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#ifdef SIGQUIT
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[SIGQUIT ] = "QUIT",
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#endif
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#ifdef SIGILL
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[SIGILL ] = "ILL",
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#endif
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#ifdef SIGTRAP
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[SIGTRAP ] = "TRAP",
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#endif
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#ifdef SIGABRT
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[SIGABRT ] = "ABRT",
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#endif
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#ifdef SIGBUS
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[SIGBUS ] = "BUS",
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#endif
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#ifdef SIGFPE
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[SIGFPE ] = "FPE",
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#endif
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#ifdef SIGKILL
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[SIGKILL ] = "KILL",
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#endif
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#ifdef SIGUSR1
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[SIGUSR1 ] = "USR1",
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#endif
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#ifdef SIGSEGV
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[SIGSEGV ] = "SEGV",
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#endif
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#ifdef SIGUSR2
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[SIGUSR2 ] = "USR2",
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#endif
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#ifdef SIGPIPE
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[SIGPIPE ] = "PIPE",
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#endif
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#ifdef SIGALRM
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[SIGALRM ] = "ALRM",
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#endif
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#ifdef SIGTERM
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[SIGTERM ] = "TERM",
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#endif
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#ifdef SIGSTKFLT
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[SIGSTKFLT] = "STKFLT",
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#endif
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#ifdef SIGCHLD
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[SIGCHLD ] = "CHLD",
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#endif
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#ifdef SIGCONT
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[SIGCONT ] = "CONT",
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#endif
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#ifdef SIGSTOP
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[SIGSTOP ] = "STOP",
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#endif
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#ifdef SIGTSTP
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[SIGTSTP ] = "TSTP",
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#endif
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#ifdef SIGTTIN
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[SIGTTIN ] = "TTIN",
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#endif
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#ifdef SIGTTOU
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[SIGTTOU ] = "TTOU",
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#endif
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#ifdef SIGURG
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[SIGURG ] = "URG",
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#endif
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#ifdef SIGXCPU
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[SIGXCPU ] = "XCPU",
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#endif
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#ifdef SIGXFSZ
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[SIGXFSZ ] = "XFSZ",
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#endif
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#ifdef SIGVTALRM
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[SIGVTALRM] = "VTALRM",
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#endif
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#ifdef SIGPROF
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[SIGPROF ] = "PROF",
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#endif
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#ifdef SIGWINCH
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[SIGWINCH ] = "WINCH",
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#endif
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#ifdef SIGPOLL
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[SIGPOLL ] = "POLL",
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#endif
|
||||
#ifdef SIGPWR
|
||||
[SIGPWR ] = "PWR",
|
||||
#endif
|
||||
#ifdef SIGSYS
|
||||
[SIGSYS ] = "SYS",
|
||||
#endif
|
||||
};
|
||||
|
||||
// Convert signal name to number.
|
||||
@ -32,12 +123,28 @@ int get_signum(const char *name)
|
||||
int i;
|
||||
|
||||
i = bb_strtou(name, NULL, 10);
|
||||
if (!errno) return i;
|
||||
for (i = 0; i < sizeof(signals) / sizeof(struct signal_name); i++)
|
||||
if (strcasecmp(name, signals[i].name) == 0
|
||||
|| (strncasecmp(name, "SIG", 3) == 0
|
||||
&& strcasecmp(&name[3], signals[i].name) == 0))
|
||||
return signals[i].number;
|
||||
if (!errno)
|
||||
return i;
|
||||
if (strncasecmp(name, "SIG", 3) == 0)
|
||||
name += 3;
|
||||
for (i = 0; i < sizeof(signals) / sizeof(signals[0]); i++)
|
||||
if (strcasecmp(name, signals[i]) == 0)
|
||||
return i;
|
||||
|
||||
#if ENABLE_DESKTOP && (defined(SIGIOT) || defined(SIGIO))
|
||||
/* These are aliased to other names */
|
||||
if ((name[0] | 0x20) == 'i' && (name[1] | 0x20) == 'o') {
|
||||
#ifdef SIGIO
|
||||
if (!name[2])
|
||||
return SIGIO;
|
||||
#endif
|
||||
#ifdef SIGIOT
|
||||
if ((name[2] | 0x20) == 't' && !name[3])
|
||||
return SIGIOT;
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
@ -45,12 +152,9 @@ int get_signum(const char *name)
|
||||
|
||||
const char *get_signame(int number)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i=0; i < sizeof(signals) / sizeof(struct signal_name); i++) {
|
||||
if (number == signals[i].number) {
|
||||
return signals[i].name;
|
||||
}
|
||||
if ((unsigned)number < sizeof(signals) / sizeof(signals[0])) {
|
||||
if (signals[number][0]) /* if it's not an empty str */
|
||||
return signals[number];
|
||||
}
|
||||
|
||||
return itoa(number);
|
||||
|
||||
@ -51,7 +51,9 @@ int kill_main(int argc, char **argv)
|
||||
if (argc == 1) {
|
||||
/* Print the whole signal list */
|
||||
for (signo = 1; signo < 32; signo++) {
|
||||
puts(get_signame(signo));
|
||||
const char *name = get_signame(signo);
|
||||
if (!isdigit(name[0]))
|
||||
puts(name);
|
||||
}
|
||||
} else { /* -l <sig list> */
|
||||
while ((arg = *++argv)) {
|
||||
|
||||
15
procps/ps.c
15
procps/ps.c
@ -47,18 +47,21 @@ static void func_pgid(char *buf, int size, const procps_status_t *ps)
|
||||
sprintf(buf, "%*u", size, ps->pgid);
|
||||
}
|
||||
|
||||
static void func_vsz(char *buf, int size, const procps_status_t *ps)
|
||||
static void put_u(char *buf, int size, unsigned u)
|
||||
{
|
||||
char buf5[5];
|
||||
smart_ulltoa5( ((unsigned long long)ps->vsz) << 10, buf5);
|
||||
smart_ulltoa5( ((unsigned long long)u) << 10, buf5);
|
||||
sprintf(buf, "%.*s", size, buf5);
|
||||
}
|
||||
|
||||
static void func_vsz(char *buf, int size, const procps_status_t *ps)
|
||||
{
|
||||
put_u(buf, size, ps->vsz);
|
||||
}
|
||||
|
||||
static void func_rss(char *buf, int size, const procps_status_t *ps)
|
||||
{
|
||||
char buf5[5];
|
||||
smart_ulltoa5( ((unsigned long long)ps->rss) << 10, buf5);
|
||||
sprintf(buf, "%.*s", size, buf5);
|
||||
put_u(buf, size, ps->rss);
|
||||
}
|
||||
|
||||
static void func_tty(char *buf, int size, const procps_status_t *ps)
|
||||
@ -383,7 +386,7 @@ int ps_main(int argc, char **argv)
|
||||
len = printf("%5u %-8s %s ",
|
||||
p->pid, user, p->state);
|
||||
else
|
||||
len = printf("%5u %-8s %6ld %s ",
|
||||
len = printf("%5u %-8s %6u %s ",
|
||||
p->pid, user, p->vsz, p->state);
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user