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Viewing changes to findutils/xargs.c

  • Committer: Denys Vlasenko
  • Author(s): Roger Knecht
  • Date: 2022-06-30 15:18:12 UTC
  • Revision ID: git-v1:20a4f70ecaad79bb932af09b7317a058872cd867
tree: new applet

Adds the tree program to list directories and files in a tree structure.

function                                             old     new   delta
tree_print                                             -     343    +343
scandir64                                              -     330    +330
scandir                                                -     330    +330
tree_main                                              -      86     +86
.rodata                                           105150  105228     +78
packed_usage                                       34511   34557     +46
alphasort64                                            -      31     +31
alphasort                                              -      31     +31
strcoll                                                -       5      +5
applet_names                                        2801    2806      +5
applet_main                                         1616    1620      +4
applet_suid                                          101     102      +1
applet_install_loc                                   202     203      +1
------------------------------------------------------------------------------
(add/remove: 11/0 grow/shrink: 6/0 up/down: 1291/0)          Total: 1291 bytes

Signed-off-by: Roger Knecht <rknecht@pm.me>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

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Lines of Context:
findutils/xargs.c
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 * http://www.opengroup.org/onlinepubs/007904975/utilities/xargs.html
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 */
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//config:config XARGS
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//config:       bool "xargs (7.6 kb)"
 
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//config:       bool "xargs (7.2 kb)"
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//config:       default y
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//config:       help
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//config:       xargs is used to execute a specified command for
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#endif
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        const char *eof_str;
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        int idx;
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        int fd_tty;
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        int fd_stdin;
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#if ENABLE_FEATURE_XARGS_SUPPORT_PARALLEL
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        int running_procs;
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        int max_procs;
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        IF_FEATURE_XARGS_SUPPORT_QUOTES(G.process_stdin__q = '\0';) \
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} while (0)
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145
 
/* Correct regardless of combination of CONFIG_xxx */
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enum {
147
 
        OPTBIT_VERBOSE = 0,
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        OPTBIT_NO_EMPTY,
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        OPTBIT_UPTO_NUMBER,
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        OPTBIT_UPTO_SIZE,
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        OPTBIT_EOF_STRING,
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        OPTBIT_EOF_STRING1,
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        OPTBIT_STDIN_TTY,
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        IF_FEATURE_XARGS_SUPPORT_CONFIRMATION(OPTBIT_INTERACTIVE,)
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        IF_FEATURE_XARGS_SUPPORT_TERMOPT(     OPTBIT_TERMINATE  ,)
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        IF_FEATURE_XARGS_SUPPORT_ZERO_TERM(   OPTBIT_ZEROTERM   ,)
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        IF_FEATURE_XARGS_SUPPORT_REPL_STR(    OPTBIT_REPLSTR    ,)
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        IF_FEATURE_XARGS_SUPPORT_REPL_STR(    OPTBIT_REPLSTR1   ,)
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        OPT_VERBOSE     = 1 << OPTBIT_VERBOSE    ,
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        OPT_NO_EMPTY    = 1 << OPTBIT_NO_EMPTY   ,
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        OPT_UPTO_NUMBER = 1 << OPTBIT_UPTO_NUMBER,
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        OPT_UPTO_SIZE   = 1 << OPTBIT_UPTO_SIZE  ,
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        OPT_EOF_STRING  = 1 << OPTBIT_EOF_STRING , /* GNU: -e[<param>] */
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        OPT_EOF_STRING1 = 1 << OPTBIT_EOF_STRING1, /* SUS: -E<param> */
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        OPT_STDIN_TTY   = 1 << OPTBIT_STDIN_TTY,
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        OPT_INTERACTIVE = IF_FEATURE_XARGS_SUPPORT_CONFIRMATION((1 << OPTBIT_INTERACTIVE)) + 0,
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        OPT_TERMINATE   = IF_FEATURE_XARGS_SUPPORT_TERMOPT(     (1 << OPTBIT_TERMINATE  )) + 0,
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        OPT_ZEROTERM    = IF_FEATURE_XARGS_SUPPORT_ZERO_TERM(   (1 << OPTBIT_ZEROTERM   )) + 0,
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        OPT_REPLSTR     = IF_FEATURE_XARGS_SUPPORT_REPL_STR(    (1 << OPTBIT_REPLSTR    )) + 0,
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        OPT_REPLSTR1    = IF_FEATURE_XARGS_SUPPORT_REPL_STR(    (1 << OPTBIT_REPLSTR1   )) + 0,
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};
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#define OPTION_STR "+trn:s:e::E:o" \
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        IF_FEATURE_XARGS_SUPPORT_CONFIRMATION("p") \
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        IF_FEATURE_XARGS_SUPPORT_TERMOPT(     "x") \
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        IF_FEATURE_XARGS_SUPPORT_ZERO_TERM(   "0") \
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        IF_FEATURE_XARGS_SUPPORT_REPL_STR(    "I:i::") \
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        IF_FEATURE_XARGS_SUPPORT_PARALLEL(    "P:+") \
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        IF_FEATURE_XARGS_SUPPORT_ARGS_FILE(   "a:")
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/*
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 * Returns 0 if xargs should continue (but may set G.xargs_exitcode to 123).
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{
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        int status;
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        if (option_mask32 & OPT_STDIN_TTY)
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                xdup2(G.fd_tty, STDIN_FILENO);
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#if !ENABLE_FEATURE_XARGS_SUPPORT_PARALLEL
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        status = spawn_and_wait(G.args);
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#else
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 ret:
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        if (status != 0)
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                G.xargs_exitcode = status;
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        if (option_mask32 & OPT_STDIN_TTY)
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                xdup2(G.fd_stdin, STDIN_FILENO);
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        return status;
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}
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//usage:        IF_FEATURE_XARGS_SUPPORT_ARGS_FILE(
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//usage:     "\n        -a FILE Read from FILE instead of stdin"
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//usage:        )
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//usage:     "\n        -o      Reopen stdin as /dev/tty"
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//usage:     "\n        -r      Don't run command if input is empty"
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//usage:     "\n        -t      Print the command on stderr before execution"
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//usage:        IF_FEATURE_XARGS_SUPPORT_CONFIRMATION(
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//usage:       "$ ls | xargs gzip\n"
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//usage:       "$ find . -name '*.c' -print | xargs rm\n"
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/* Correct regardless of combination of CONFIG_xxx */
 
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enum {
 
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        OPTBIT_VERBOSE = 0,
 
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        OPTBIT_NO_EMPTY,
 
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        OPTBIT_UPTO_NUMBER,
 
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        OPTBIT_UPTO_SIZE,
 
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        OPTBIT_EOF_STRING,
 
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        OPTBIT_EOF_STRING1,
 
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        IF_FEATURE_XARGS_SUPPORT_CONFIRMATION(OPTBIT_INTERACTIVE,)
 
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        IF_FEATURE_XARGS_SUPPORT_TERMOPT(     OPTBIT_TERMINATE  ,)
 
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        IF_FEATURE_XARGS_SUPPORT_ZERO_TERM(   OPTBIT_ZEROTERM   ,)
 
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        IF_FEATURE_XARGS_SUPPORT_REPL_STR(    OPTBIT_REPLSTR    ,)
 
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        IF_FEATURE_XARGS_SUPPORT_REPL_STR(    OPTBIT_REPLSTR1   ,)
 
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        OPT_VERBOSE     = 1 << OPTBIT_VERBOSE    ,
 
581
        OPT_NO_EMPTY    = 1 << OPTBIT_NO_EMPTY   ,
 
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        OPT_UPTO_NUMBER = 1 << OPTBIT_UPTO_NUMBER,
 
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        OPT_UPTO_SIZE   = 1 << OPTBIT_UPTO_SIZE  ,
 
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        OPT_EOF_STRING  = 1 << OPTBIT_EOF_STRING , /* GNU: -e[<param>] */
 
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        OPT_EOF_STRING1 = 1 << OPTBIT_EOF_STRING1, /* SUS: -E<param> */
 
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        OPT_INTERACTIVE = IF_FEATURE_XARGS_SUPPORT_CONFIRMATION((1 << OPTBIT_INTERACTIVE)) + 0,
 
587
        OPT_TERMINATE   = IF_FEATURE_XARGS_SUPPORT_TERMOPT(     (1 << OPTBIT_TERMINATE  )) + 0,
 
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        OPT_ZEROTERM    = IF_FEATURE_XARGS_SUPPORT_ZERO_TERM(   (1 << OPTBIT_ZEROTERM   )) + 0,
 
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        OPT_REPLSTR     = IF_FEATURE_XARGS_SUPPORT_REPL_STR(    (1 << OPTBIT_REPLSTR    )) + 0,
 
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        OPT_REPLSTR1    = IF_FEATURE_XARGS_SUPPORT_REPL_STR(    (1 << OPTBIT_REPLSTR1   )) + 0,
 
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};
 
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#define OPTION_STR "+trn:s:e::E:" \
 
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        IF_FEATURE_XARGS_SUPPORT_CONFIRMATION("p") \
 
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        IF_FEATURE_XARGS_SUPPORT_TERMOPT(     "x") \
 
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        IF_FEATURE_XARGS_SUPPORT_ZERO_TERM(   "0") \
 
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        IF_FEATURE_XARGS_SUPPORT_REPL_STR(    "I:i::") \
 
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        IF_FEATURE_XARGS_SUPPORT_PARALLEL(    "P:+") \
 
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        IF_FEATURE_XARGS_SUPPORT_ARGS_FILE(   "a:")
 
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int xargs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int xargs_main(int argc UNUSED_PARAM, char **argv)
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{
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                        store_param(argv[i]);
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        }
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739
 
        if (opt & OPT_STDIN_TTY) {
740
 
                G.fd_tty = xopen(CURRENT_TTY, O_RDONLY);
741
 
                close_on_exec_on(G.fd_tty);
742
 
                G.fd_stdin = dup(STDIN_FILENO);
743
 
                close_on_exec_on(G.fd_stdin);
744
 
        }
745
 
 
746
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        initial_idx = G.idx;
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        while (1) {
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                char *rem;
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{
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        fprintf(stderr, "Usage: %s [-p] [-r] [-t] -[x] [-n max_arg] [-s max_chars]\n",
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                applet_name);
803
 
        exit_FAILURE();
 
786
        exit(EXIT_FAILURE);
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}
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int main(int argc, char **argv)