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author | 2021-05-09 14:20:58 -0400 | |
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committer | 2021-05-09 14:20:58 -0400 | |
commit | 5fd83771641d15c418f747bd343ba6738d3875f7 (patch) | |
tree | 5abf0f78f680d9837dbd93d4d4c3933bb7509599 /shell_cmds/lastcomm/lastcomm.c | |
download | apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.gz apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.tar.zst apple_cmds-5fd83771641d15c418f747bd343ba6738d3875f7.zip |
Import macOS userland
adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106
Diffstat (limited to 'shell_cmds/lastcomm/lastcomm.c')
-rw-r--r-- | shell_cmds/lastcomm/lastcomm.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/shell_cmds/lastcomm/lastcomm.c b/shell_cmds/lastcomm/lastcomm.c new file mode 100644 index 0000000..e1d9b66 --- /dev/null +++ b/shell_cmds/lastcomm/lastcomm.c @@ -0,0 +1,235 @@ +/* $NetBSD: lastcomm.c,v 1.21 2009/04/12 13:08:31 lukem Exp $ */ + +/* + * Copyright (c) 1980, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#ifndef lint +__COPYRIGHT("@(#) Copyright (c) 1980, 1993\ + The Regents of the University of California. All rights reserved."); +#endif /* not lint */ + +#ifndef lint +#if 0 +static char sccsid[] = "@(#)lastcomm.c 8.2 (Berkeley) 4/29/95"; +#endif +__RCSID("$NetBSD: lastcomm.c,v 1.21 2009/04/12 13:08:31 lukem Exp $"); +#endif /* not lint */ + +#include <sys/param.h> +#include <sys/stat.h> +#include <sys/acct.h> + +#include <ctype.h> +#include <err.h> +#include <fcntl.h> +#include <math.h> +#include <pwd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <struct.h> +#include <time.h> +#include <tzfile.h> +#include <unistd.h> +/* definitions from utmp.h */ +#define UT_NAMESIZE 8 +#define UT_LINESIZE 8 +#include "pathnames.h" + +static time_t expand(u_int); +static char *flagbits(int); +static const char *getdev(dev_t); +static int requested(char *[], struct acct *); +static void usage(void) __dead; + +int main(int, char **); + +int +main(int argc, char *argv[]) +{ + char *p; + struct acct ab; + struct stat sb; + FILE *fp; + off_t size; + time_t t; + double delta; + int ch; + const char *acctfile = _PATH_ACCT; + + setprogname(argv[0]); + + while ((ch = getopt(argc, argv, "f:")) != -1) + switch((char)ch) { + case 'f': + acctfile = optarg; + break; + case '?': + default: + usage(); + } + argc -= optind; + argv += optind; + + /* Open the file. */ + if ((fp = fopen(acctfile, "r")) == NULL || fstat(fileno(fp), &sb)) + err(1, "%s", acctfile); + + /* + * Round off to integral number of accounting records, probably + * not necessary, but it doesn't hurt. + */ + size = sb.st_size - sb.st_size % sizeof(struct acct); + + /* Check if any records to display. */ + if (size < (off_t)sizeof(struct acct)) + exit(0); + + /* + * Seek to before the last entry in the file; use lseek(2) in case + * the file is bigger than a "long". + */ + size -= sizeof(struct acct); + if (lseek(fileno(fp), size, SEEK_SET) == -1) + err(1, "%s", acctfile); + + for (;;) { + if (fread(&ab, sizeof(struct acct), 1, fp) != 1) + err(1, "%s", acctfile); + + if (ab.ac_comm[0] == '\0') { + ab.ac_comm[0] = '?'; + ab.ac_comm[1] = '\0'; + } else + for (p = &ab.ac_comm[0]; + p < &ab.ac_comm[fldsiz(acct, ac_comm)] && *p; ++p) + if (!isprint((unsigned char)*p)) + *p = '?'; + if (!*argv || requested(argv, &ab)) { + + time_t timelong = ab.ac_btime; + t = expand(ab.ac_utime) + expand(ab.ac_stime); + (void)printf( + "%-*.*s %-7s %-*.*s %-*.*s %6.2f secs %.16s", + (int)fldsiz(acct, ac_comm), + (int)fldsiz(acct, ac_comm), + ab.ac_comm, flagbits(ab.ac_flag), + UT_NAMESIZE, UT_NAMESIZE, + user_from_uid(ab.ac_uid, 0), UT_LINESIZE, + UT_LINESIZE, getdev(ab.ac_tty), + t / (double)AHZ, ctime(&timelong)); + delta = expand(ab.ac_etime) / (double)AHZ; + printf(" (%1.0f:%02.0f:%05.2f)\n", + floor(delta / SECSPERHOUR), + floor(fmod(delta, SECSPERHOUR) / SECSPERMIN), + fmod(delta, SECSPERMIN)); + } + /* are we at the beginning of the file yet? */ + if (size == 0) + break; + /* seek backward over the one we read and the next to read */ + if (fseek(fp, 2 * -(long)sizeof(struct acct), SEEK_CUR) == -1) + err(1, "%s", acctfile); + /* and account for its size */ + size -= sizeof(struct acct); + } + exit(0); +} + +static time_t +expand(u_int t) +{ + time_t nt; + + nt = t & 017777; + t >>= 13; + while (t) { + t--; + nt <<= 3; + } + return (nt); +} + +static char * +flagbits(int f) +{ + static char flags[20] = "-"; + char *p; + +#define BIT(flag, ch) if (f & flag) *p++ = ch + + p = flags + 1; + BIT(ASU, 'S'); + BIT(AFORK, 'F'); + BIT(ACOMPAT, 'C'); + BIT(ACORE, 'D'); + BIT(AXSIG, 'X'); + *p = '\0'; + return (flags); +} + +static int +requested(char *argv[], struct acct *acp) +{ + do { + if (!strcmp(user_from_uid(acp->ac_uid, 0), *argv)) + return (1); + if (!strcmp(getdev(acp->ac_tty), *argv)) + return (1); + if (!strncmp(acp->ac_comm, *argv, fldsiz(acct, ac_comm))) + return (1); + } while (*++argv); + return (0); +} + +static const char * +getdev(dev_t dev) +{ + static dev_t lastdev = (dev_t)-1; + static const char *lastname; + + if (dev == NODEV) /* Special case. */ + return ("__"); + if (dev == lastdev) /* One-element cache. */ + return (lastname); + lastdev = dev; + if ((lastname = devname(dev, S_IFCHR)) == NULL) + lastname = "??"; + return (lastname); +} + +static void +usage(void) +{ + (void)fprintf(stderr, + "Usage: %s [ -f file ] [command ...] [user ...] [tty ...]\n", + getprogname()); + exit(1); +} |