Changeset 2725 in MondoRescue for branches/2.2.9/mindi-busybox/util-linux/dmesg.c
- Timestamp:
- Feb 25, 2011, 9:26:54 PM (13 years ago)
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- 1 edited
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branches/2.2.9/mindi-busybox/util-linux/dmesg.c
r1765 r2725 5 5 * 6 6 * Copyright 2006 Rob Landley <rob@landley.net> 7 * Copyright 2006 Bernhard Fischer <rep.nop@aon.at>7 * Copyright 2006 Bernhard Reutner-Fischer <rep.nop@aon.at> 8 8 * 9 * Licensed under GPLv2, see file LICENSE in this tarball for details.9 * Licensed under GPLv2, see file LICENSE in this source tree. 10 10 */ 11 12 11 #include <sys/klog.h> 13 12 #include "libbb.h" 14 13 15 int dmesg_main(int argc, char **argv) ;16 int dmesg_main(int argc , char **argv)14 int dmesg_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; 15 int dmesg_main(int argc UNUSED_PARAM, char **argv) 17 16 { 18 char *size, *level; 19 int flags = getopt32(argv, "cs:n:", &size, &level); 17 int len, level; 18 char *buf; 19 unsigned opts; 20 enum { 21 OPT_c = 1 << 0, 22 OPT_s = 1 << 1, 23 OPT_n = 1 << 2 24 }; 20 25 21 if (flags & 4) { 22 if (klogctl(8, NULL, xatoul_range(level, 0, 10))) 26 opt_complementary = "s+:n+"; /* numeric */ 27 opts = getopt32(argv, "cs:n:", &len, &level); 28 if (opts & OPT_n) { 29 if (klogctl(8, NULL, (long) level)) 23 30 bb_perror_msg_and_die("klogctl"); 24 } else { 25 int len; 26 char *buf; 27 28 len = (flags & 2) ? xatoul_range(size, 2, INT_MAX) : 16384; 29 buf = xmalloc(len); 30 if (0 > (len = klogctl(3 + (flags & 1), buf, len))) 31 bb_perror_msg_and_die("klogctl"); 32 33 // Skip <#> at the start of lines, and make sure we end with a newline. 34 35 if (ENABLE_FEATURE_DMESG_PRETTY) { 36 int last = '\n'; 37 int in; 38 39 for (in = 0; in<len;) { 40 if (last == '\n' && buf[in] == '<') in += 3; 41 else putchar(last = buf[in++]); 42 } 43 if (last != '\n') putchar('\n'); 44 } else { 45 write(1,buf,len); 46 if (len && buf[len-1]!='\n') putchar('\n'); 47 } 48 49 if (ENABLE_FEATURE_CLEAN_UP) free(buf); 31 return EXIT_SUCCESS; 50 32 } 51 33 52 return 0; 34 if (!(opts & OPT_s)) 35 len = klogctl(10, NULL, 0); /* read ring buffer size */ 36 if (len < 16*1024) 37 len = 16*1024; 38 if (len > 16*1024*1024) 39 len = 16*1024*1024; 40 41 buf = xmalloc(len); 42 len = klogctl(3 + (opts & OPT_c), buf, len); /* read ring buffer */ 43 if (len < 0) 44 bb_perror_msg_and_die("klogctl"); 45 if (len == 0) 46 return EXIT_SUCCESS; 47 48 49 if (ENABLE_FEATURE_DMESG_PRETTY) { 50 int last = '\n'; 51 int in = 0; 52 53 /* Skip <#> at the start of lines */ 54 while (1) { 55 if (last == '\n' && buf[in] == '<') { 56 in += 3; 57 if (in >= len) 58 break; 59 } 60 last = buf[in]; 61 putchar(last); 62 in++; 63 if (in >= len) 64 break; 65 } 66 /* Make sure we end with a newline */ 67 if (last != '\n') 68 bb_putchar('\n'); 69 } else { 70 full_write(STDOUT_FILENO, buf, len); 71 if (buf[len-1] != '\n') 72 bb_putchar('\n'); 73 } 74 75 if (ENABLE_FEATURE_CLEAN_UP) free(buf); 76 77 return EXIT_SUCCESS; 53 78 }
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