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head: report file open errors with exitcode 1 (was happily returning 0)
head_main 409 417 +8
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272710fe93
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@ -40,7 +40,6 @@ int head_main(int argc, char **argv)
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int count_bytes = 0;
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int header_threshhold = 1;
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#endif
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FILE *fp;
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const char *fmt;
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char *p;
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@ -50,7 +49,7 @@ int head_main(int argc, char **argv)
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#if ENABLE_INCLUDE_SUSv2 || ENABLE_FEATURE_FANCY_HEAD
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/* Allow legacy syntax of an initial numeric option without -n. */
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if (argc > 1 && argv[1][0] == '-'
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if (argv[1] && argv[1][0] == '-'
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&& isdigit(argv[1][1])
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) {
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--argc;
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@ -79,7 +78,6 @@ int head_main(int argc, char **argv)
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#if ENABLE_INCLUDE_SUSv2 || ENABLE_FEATURE_FANCY_HEAD
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GET_COUNT:
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#endif
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#if !ENABLE_FEATURE_FANCY_HEAD
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count = xatoul(p);
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#else
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@ -128,10 +126,12 @@ int head_main(int argc, char **argv)
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putchar(c);
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}
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if (fclose_if_not_stdin(fp)) {
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bb_simple_perror_msg(*argv); /* Avoid multibyte problems. */
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bb_simple_perror_msg(*argv);
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retval = EXIT_FAILURE;
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}
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die_if_ferror_stdout();
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} else {
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retval = EXIT_FAILURE;
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}
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fmt = header_fmt_str;
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} while (*++argv);
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