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SUSE:SLE-15:Update
util-linux.12081
util-linux-agetty-smart-reload-04.patch
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File util-linux-agetty-smart-reload-04.patch of Package util-linux.12081
Backport. From ddbb3067b676ad040302ad6ccd6b5d41ff536e83 Mon Sep 17 00:00:00 2001 From: Karel Zak <kzak@redhat.com> Date: Thu, 11 Oct 2018 13:12:02 +0200 Subject: [PATCH 04/14] agetty: move all issue variables to struct Signed-off-by: Karel Zak <kzak@redhat.com> --- term-utils/agetty.c | 180 +++++++++++++++++++++++++------------------- 1 file changed, 101 insertions(+), 79 deletions(-) Index: util-linux-2.31.1/term-utils/agetty.c =================================================================== --- util-linux-2.31.1.orig/term-utils/agetty.c +++ util-linux-2.31.1/term-utils/agetty.c @@ -150,6 +150,18 @@ static int netlink_fd = AGETTY_RELOAD_FD static __u32 netlink_groups; #endif +struct issue { + FILE *output; + char *mem; + size_t mem_sz; + +#ifdef AGETTY_RELOAD + char *mem_old; +#endif + unsigned int do_tcsetattr : 1, + do_tcrestore : 1; +}; + /* * When multiple baud rates are specified on the command line, the first one * we will try is the first one specified. @@ -301,11 +313,11 @@ static void termio_init(struct options * static void reset_vc (const struct options *op, struct termios *tp); static void auto_baud(struct termios *tp); static void list_speeds(void); -static void output_special_char (unsigned char c, struct options *op, +static void output_special_char (struct issue *ie, unsigned char c, struct options *op, struct termios *tp, FILE *fp); -static void do_prompt(struct options *op, struct termios *tp); +static void do_prompt(struct issue *ie, struct options *op, struct termios *tp); static void next_speed(struct options *op, struct termios *tp); -static char *get_logname(struct options *op, +static char *get_logname(struct issue *ie, struct options *op, struct termios *tp, struct chardata *cp); static void termio_final(struct options *op, struct termios *tp, struct chardata *cp); @@ -320,8 +332,8 @@ static ssize_t append(char *dest, size_t static void check_username (const char* nm); static void login_options_to_argv(char *argv[], int *argc, char *str, char *username); static void reload_agettys(void); -static void print_issue_file(struct options *op, struct termios *tp); -static void eval_issue_file(struct options *op, struct termios *tp); +static void print_issue_file(struct issue *ie, struct options *op, struct termios *tp); +static void eval_issue_file(struct issue *ie, struct options *op, struct termios *tp); /* Fake hostname for ut_host specified on command line. */ static char *fakehost; @@ -348,6 +360,9 @@ int main(int argc, char **argv) .tty = "tty1", /* default tty line */ .issue = ISSUE /* default issue file */ }; + struct issue issue = { + .mem = NULL, + }; char *login_argv[LOGIN_ARGV_MAX + 1]; int login_argc = 0; struct sigaction sa, sa_hup, sa_quit, sa_int; @@ -458,19 +473,19 @@ int main(int argc, char **argv) } if (options.flags & F_NOPROMPT) { /* --skip-login */ - eval_issue_file(&options, &termios); - print_issue_file(&options, &termios); + eval_issue_file(&issue, &options, &termios); + print_issue_file(&issue, &options, &termios); } else { /* regular (auto)login */ if (options.autolog) { /* Autologin prompt */ - eval_issue_file(&options, &termios); - do_prompt(&options, &termios); + eval_issue_file(&issue, &options, &termios); + do_prompt(&issue, &options, &termios); printf(_("%s%s (automatic login)\n"), LOGIN, options.autolog); } else { /* Read the login name. */ debug("reading login name\n"); while ((username = - get_logname(&options, &termios, &chardata)) == NULL) + get_logname(&issue, &options, &termios, &chardata)) == NULL) if ((options.flags & F_VCONSOLE) == 0 && options.numspeed) next_speed(&options, &termios); } @@ -1664,20 +1679,13 @@ static int wait_for_term_input(int fd) } #endif /* AGETTY_RELOAD */ #ifdef ISSUE -static FILE *issue_f; -static char *issue_mem = NULL; -static size_t issue_mem_sz; -static bool do_tcsetattr; -static bool do_tcrestore; -#ifdef AGETTY_RELOAD -static char *issue_mem_old = NULL; -#endif -static bool cmp_issue_file(void) { - if (issue_mem_old && issue_mem) { - if (!strcmp(issue_mem_old, issue_mem)) { - free(issue_mem_old); - issue_mem_old = issue_mem; - issue_mem = NULL; +static bool cmp_issue_file(struct issue *ie) +{ + if (ie->mem_old && ie->mem) { + if (!strcmp(ie->mem_old, ie->mem)) { + free(ie->mem_old); + ie->mem_old = ie->mem; + ie->mem = NULL; return false; } } else @@ -1685,7 +1693,10 @@ static bool cmp_issue_file(void) { return true; } #endif -static void print_issue_file(struct options *op, struct termios *tp) + +static void print_issue_file(struct issue *ie, + struct options *op, + struct termios *tp) { int oflag = tp->c_oflag; /* Save current setting. */ @@ -1694,7 +1705,7 @@ static void print_issue_file(struct opti write_all(STDOUT_FILENO, "\r\n", 2); } - if (do_tcsetattr) { + if (ie->do_tcsetattr) { if ((op->flags & F_VCONSOLE) == 0) { /* Map new line in output to carriage return & new line. */ tp->c_oflag |= (ONLCR | OPOST); @@ -1702,24 +1713,26 @@ static void print_issue_file(struct opti } } - write_all(STDOUT_FILENO, issue_mem, issue_mem_sz); - if (do_tcrestore) { + write_all(STDOUT_FILENO, ie->mem, ie->mem_sz); + if (ie->do_tcrestore) { /* Restore settings. */ tp->c_oflag = oflag; /* Wait till output is gone. */ tcsetattr(STDIN_FILENO, TCSADRAIN, tp); } #ifdef AGETTY_RELOAD - free(issue_mem_old); - issue_mem_old = issue_mem; - issue_mem = NULL; + free(ie->mem_old); + ie->mem_old = ie->mem; + ie->mem = NULL; #else - free(issue_mem); - issue_mem = NULL; + free(ie->mem); + ie->mem = NULL; #endif } -static void eval_issue_file(struct options *op, struct termios *tp) +static void eval_issue_file(struct issue *ie, + struct options *op, + struct termios *tp) { #ifdef ISSUE FILE *fd; @@ -1729,46 +1742,46 @@ static void eval_issue_file(struct optio #endif #ifdef ISSUE - issue_f = open_memstream(&issue_mem, &issue_mem_sz); + ie->output = open_memstream(&ie->mem, &ie->mem_sz); if ((op->flags & F_ISSUE) && (fd = fopen(op->issue, "r"))) { int c; - do_tcsetattr = true; + ie->do_tcsetattr = true; while ((c = getc(fd)) != EOF) { if (c == '\\') - output_special_char(getc(fd), op, tp, fd); + output_special_char(ie, getc(fd), op, tp, fd); else - putc(c, issue_f); + putc(c, ie->output); } fflush(stdout); if ((op->flags & F_VCONSOLE) == 0) - do_tcrestore = true; + ie->do_tcrestore = true; fclose(fd); } #ifdef AGETTY_RELOAD if (netlink_groups != 0) open_netlink(); #endif - fclose(issue_f); + fclose(ie->output); #endif /* ISSUE */ } /* Show login prompt, optionally preceded by /etc/issue contents. */ -static void do_prompt(struct options *op, struct termios *tp) +static void do_prompt(struct issue *ie, struct options *op, struct termios *tp) { #ifdef AGETTY_RELOAD again: #endif - print_issue_file(op, tp); + print_issue_file(ie, op, tp); if (op->flags & F_LOGINPAUSE) { puts(_("[press ENTER to login]")); #ifdef AGETTY_RELOAD if (!wait_for_term_input(STDIN_FILENO)) { - eval_issue_file(op, tp); - if (cmp_issue_file()) { + eval_issue_file(ie, op, tp); + if (cmp_issue_file(ie)) { if (op->flags & F_VCONSOLE) termio_clear(STDOUT_FILENO); goto again; @@ -1864,7 +1877,7 @@ static void next_speed(struct options *o } /* Get user name, establish parity, speed, erase, kill & eol. */ -static char *get_logname(struct options *op, struct termios *tp, struct chardata *cp) +static char *get_logname(struct issue *ie, struct options *op, struct termios *tp, struct chardata *cp) { static char logname[BUFSIZ]; char *bp; @@ -1893,10 +1906,10 @@ static char *get_logname(struct options bp = logname; *bp = '\0'; - eval_issue_file(op, tp); + eval_issue_file(ie, op, tp); while (*logname == '\0') { /* Write issue file and prompt */ - do_prompt(op, tp); + do_prompt(ie, op, tp); #ifdef AGETTY_RELOAD no_reload: @@ -1906,8 +1919,8 @@ static char *get_logname(struct options */ if ((op->flags & F_VCONSOLE) == 0) sleep(1); - eval_issue_file(op, tp); - if (!cmp_issue_file()) + eval_issue_file(ie, op, tp); + if (!cmp_issue_file(ie)) goto no_reload; tcflush(STDIN_FILENO, TCIFLUSH); if (op->flags & F_VCONSOLE) @@ -2279,12 +2292,12 @@ static void log_warn(const char *fmt, .. va_end(ap); } -static void print_addr(sa_family_t family, void *addr) +static void print_addr(struct issue *ie, sa_family_t family, void *addr) { char buff[INET6_ADDRSTRLEN + 1]; inet_ntop(family, addr, buff, sizeof(buff)); - fprintf(issue_f, "%s", buff); + fprintf(ie->output, "%s", buff); } /* @@ -2292,7 +2305,8 @@ static void print_addr(sa_family_t famil * specified then prints the "best" one (UP, RUNNING, non-LOOPBACK). If not * found the "best" interface then prints at least host IP. */ -static void output_iface_ip(struct ifaddrs *addrs, +static void output_iface_ip(struct issue *ie, + struct ifaddrs *addrs, const char *iface, sa_family_t family) { @@ -2334,7 +2348,7 @@ static void output_iface_ip(struct ifadd } if (addr) { - print_addr(family, addr); + print_addr(ie, family, addr); return; } } @@ -2359,7 +2373,7 @@ static void output_iface_ip(struct ifadd break; } if (addr) - print_addr(family, addr); + print_addr(ie, family, addr); freeaddrinfo(info); } @@ -2393,8 +2407,11 @@ static char *get_escape_argument(FILE *f return buf; } -static void output_special_char(unsigned char c, struct options *op, - struct termios *tp, FILE *fp) +static void output_special_char(struct issue *ie, + unsigned char c, + struct options *op, + struct termios *tp, + FILE *fp) { struct utsname uts; @@ -2406,36 +2423,36 @@ static void output_special_char(unsigned if (get_escape_argument(fp, escname, sizeof(escname))) { const char *esc = color_sequence_from_colorname(escname); if (esc) - fputs(esc, issue_f); + fputs(esc, ie->output); } else - fputs("\033", issue_f); + fputs("\033", ie->output); break; } case 's': uname(&uts); - fprintf(issue_f, "%s", uts.sysname); + fprintf(ie->output, "%s", uts.sysname); break; case 'n': uname(&uts); - fprintf(issue_f, "%s", uts.nodename); + fprintf(ie->output, "%s", uts.nodename); break; case 'r': uname(&uts); - fprintf(issue_f, "%s", uts.release); + fprintf(ie->output, "%s", uts.release); break; case 'v': uname(&uts); - fprintf(issue_f, "%s", uts.version); + fprintf(ie->output, "%s", uts.version); break; case 'm': uname(&uts); - fprintf(issue_f, "%s", uts.machine); + fprintf(ie->output, "%s", uts.machine); break; case 'o': { char *dom = xgetdomainname(); - fputs(dom ? dom : "unknown_domain", issue_f); + fputs(dom ? dom : "unknown_domain", ie->output); free(dom); break; } @@ -2455,7 +2472,7 @@ static void output_special_char(unsigned (canon = strchr(info->ai_canonname, '.'))) dom = canon + 1; } - fputs(dom ? dom : "unknown_domain", issue_f); + fputs(dom ? dom : "unknown_domain", ie->output); if (info) freeaddrinfo(info); free(host); @@ -2474,19 +2491,19 @@ static void output_special_char(unsigned break; if (c == 'd') /* ISO 8601 */ - fprintf(issue_f, "%s %s %d %d", + fprintf(ie->output, "%s %s %d %d", nl_langinfo(ABDAY_1 + tm->tm_wday), nl_langinfo(ABMON_1 + tm->tm_mon), tm->tm_mday, tm->tm_year < 70 ? tm->tm_year + 2000 : tm->tm_year + 1900); else - fprintf(issue_f, "%02d:%02d:%02d", + fprintf(ie->output, "%02d:%02d:%02d", tm->tm_hour, tm->tm_min, tm->tm_sec); break; } case 'l': - fprintf (issue_f, "%s", op->tty); + fprintf (ie->output, "%s", op->tty); break; case 'b': { @@ -2495,7 +2512,7 @@ static void output_special_char(unsigned for (i = 0; speedtab[i].speed; i++) { if (speedtab[i].code == speed) { - fprintf(issue_f, "%ld", speedtab[i].speed); + fprintf(ie->output, "%ld", speedtab[i].speed); break; } } @@ -2510,18 +2527,18 @@ static void output_special_char(unsigned var = read_os_release(op, varname); if (var) { if (strcmp(varname, "ANSI_COLOR") == 0) - fprintf(issue_f, "\033[%sm", var); + fprintf(ie->output, "\033[%sm", var); else - fputs(var, issue_f); + fputs(var, ie->output); } /* \S */ } else if ((var = read_os_release(op, "PRETTY_NAME"))) { - fputs(var, issue_f); + fputs(var, ie->output); /* \S and PRETTY_NAME not found */ } else { uname(&uts); - fputs(uts.sysname, issue_f); + fputs(uts.sysname, ie->output); } free(var); @@ -2539,9 +2556,9 @@ static void output_special_char(unsigned users++; endutxent(); if (c == 'U') - fprintf(issue_f, P_("%d user", "%d users", users), users); + fprintf(ie->output, P_("%d user", "%d users", users), users); else - fprintf (issue_f, "%d ", users); + fprintf (ie->output, "%d ", users); break; } case '4': @@ -2556,9 +2573,9 @@ static void output_special_char(unsigned break; if (get_escape_argument(fp, iface, sizeof(iface))) - output_iface_ip(addrs, iface, family); + output_iface_ip(ie, addrs, iface, family); else - output_iface_ip(addrs, NULL, family); + output_iface_ip(ie, addrs, NULL, family); freeifaddrs(addrs); break;
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