X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Futil.c;h=e9869ea4fad3bfd3695d41a6de7059db6deedfed;hb=a26c9cc60477acacf3a147009894bd837353ed6c;hp=1babb6aed457060ed11f0e79636a29ffc4da8d84;hpb=8f2d43a0121bc9a57ba8b79b33d5ac87d36ca2f2;p=elogind.git diff --git a/src/util.c b/src/util.c index 1babb6aed..e9869ea4f 100644 --- a/src/util.c +++ b/src/util.c @@ -705,15 +705,22 @@ int read_one_line_file(const char *fn, char **line) { assert(fn); assert(line); - if (!(f = fopen(fn, "re"))) + f = fopen(fn, "re"); + if (!f) return -errno; - if (!(fgets(t, sizeof(t), f))) { - r = feof(f) ? -EIO : -errno; - goto finish; + if (!fgets(t, sizeof(t), f)) { + + if (ferror(f)) { + r = -errno; + goto finish; + } + + t[0] = 0; } - if (!(c = strdup(t))) { + c = strdup(t); + if (!c) { r = -ENOMEM; goto finish; } @@ -2544,7 +2551,7 @@ int ask(char *ret, const char *replies, const char *text, ...) { } } -int reset_terminal_fd(int fd) { +int reset_terminal_fd(int fd, bool switch_to_text) { struct termios termios; int r = 0; @@ -2560,7 +2567,8 @@ int reset_terminal_fd(int fd) { ioctl(fd, TIOCNXCL); /* Switch to text mode */ - ioctl(fd, KDSETMODE, KD_TEXT); + if (switch_to_text) + ioctl(fd, KDSETMODE, KD_TEXT); /* Enable console unicode mode */ ioctl(fd, KDSKBMODE, K_UNICODE); @@ -2614,7 +2622,7 @@ int reset_terminal(const char *name) { if (fd < 0) return fd; - r = reset_terminal_fd(fd); + r = reset_terminal_fd(fd, true); close_nointr_nofail(fd); return r; @@ -2808,7 +2816,8 @@ int acquire_terminal(const char *name, bool fail, bool force, bool ignore_tiocst if (notify >= 0) close_nointr_nofail(notify); - if ((r = reset_terminal_fd(fd)) < 0) + r = reset_terminal_fd(fd, true); + if (r < 0) log_warning("Failed to reset terminal: %s", strerror(-r)); return fd; @@ -3261,11 +3270,15 @@ fallback: void rename_process(const char name[8]) { assert(name); - prctl(PR_SET_NAME, name); + /* This is a like a poor man's setproctitle(). It changes the + * comm field, argv[0], and also the glibc's internally used + * name of the process. For the first one a limit of 16 chars + * applies, to the second one usually one of 10 (i.e. length + * of "/sbin/init"), to the third one one of 7 (i.e. length of + * "systemd"). If you pass a longer string it will be + * truncated */ - /* This is a like a poor man's setproctitle(). The string - * passed should fit in 7 chars (i.e. the length of - * "systemd") */ + prctl(PR_SET_NAME, name); if (program_invocation_name) strncpy(program_invocation_name, name, strlen(program_invocation_name)); @@ -3775,139 +3788,6 @@ void status_welcome(void) { log_warning("Failed to read /etc/os-release: %s", strerror(-r)); } -#if defined(TARGET_FEDORA) - if (!pretty_name) { - if ((r = read_one_line_file("/etc/system-release", &pretty_name)) < 0) { - - if (r != -ENOENT) - log_warning("Failed to read /etc/system-release: %s", strerror(-r)); - } - } - - if (!ansi_color && pretty_name) { - - /* This tries to mimic the color magic the old Red Hat sysinit - * script did. */ - - if (startswith(pretty_name, "Red Hat")) - const_color = "0;31"; /* Red for RHEL */ - else if (startswith(pretty_name, "Fedora")) - const_color = "0;34"; /* Blue for Fedora */ - } - -#elif defined(TARGET_SUSE) - - if (!pretty_name) { - if ((r = read_one_line_file("/etc/SuSE-release", &pretty_name)) < 0) { - - if (r != -ENOENT) - log_warning("Failed to read /etc/SuSE-release: %s", strerror(-r)); - } - } - - if (!ansi_color) - const_color = "0;32"; /* Green for openSUSE */ - -#elif defined(TARGET_GENTOO) - - if (!pretty_name) { - if ((r = read_one_line_file("/etc/gentoo-release", &pretty_name)) < 0) { - - if (r != -ENOENT) - log_warning("Failed to read /etc/gentoo-release: %s", strerror(-r)); - } - } - - if (!ansi_color) - const_color = "1;34"; /* Light Blue for Gentoo */ - -#elif defined(TARGET_ALTLINUX) - - if (!pretty_name) { - if ((r = read_one_line_file("/etc/altlinux-release", &pretty_name)) < 0) { - - if (r != -ENOENT) - log_warning("Failed to read /etc/altlinux-release: %s", strerror(-r)); - } - } - - if (!ansi_color) - const_color = "0;36"; /* Cyan for ALTLinux */ - - -#elif defined(TARGET_DEBIAN) - - if (!pretty_name) { - char *version; - - if ((r = read_one_line_file("/etc/debian_version", &version)) < 0) { - - if (r != -ENOENT) - log_warning("Failed to read /etc/debian_version: %s", strerror(-r)); - } else { - pretty_name = strappend("Debian ", version); - free(version); - - if (!pretty_name) - log_warning("Failed to allocate Debian version string."); - } - } - - if (!ansi_color) - const_color = "1;31"; /* Light Red for Debian */ - -#elif defined(TARGET_UBUNTU) - - if ((r = parse_env_file("/etc/lsb-release", NEWLINE, - "DISTRIB_DESCRIPTION", &pretty_name, - NULL)) < 0) { - - if (r != -ENOENT) - log_warning("Failed to read /etc/lsb-release: %s", strerror(-r)); - } - - if (!ansi_color) - const_color = "0;33"; /* Orange/Brown for Ubuntu */ - -#elif defined(TARGET_MANDRIVA) - - if (!pretty_name) { - char *s, *p; - - if ((r = read_one_line_file("/etc/mandriva-release", &s) < 0)) { - if (r != -ENOENT) - log_warning("Failed to read /etc/mandriva-release: %s", strerror(-r)); - } else { - p = strstr(s, " release "); - if (p) { - *p = '\0'; - p += 9; - p[strcspn(p, " ")] = '\0'; - - /* This corresponds to standard rc.sysinit */ - if (asprintf(&pretty_name, "%s\x1B[0;39m %s", s, p) > 0) - const_color = "1;36"; - else - log_warning("Failed to allocate Mandriva version string."); - } else - log_warning("Failed to parse /etc/mandriva-release"); - free(s); - } - } -#elif defined(TARGET_MEEGO) - - if (!pretty_name) { - if ((r = read_one_line_file("/etc/meego-release", &pretty_name)) < 0) { - - if (r != -ENOENT) - log_warning("Failed to read /etc/meego-release: %s", strerror(-r)); - } - } - - if (!ansi_color) - const_color = "1;35"; /* Bright Magenta for MeeGo */ -#endif - if (!pretty_name && !const_pretty) const_pretty = "Linux"; @@ -4617,11 +4497,12 @@ void execute_directory(const char *directory, DIR *d, char *argv[]) { } while (!hashmap_isempty(pids)) { + pid_t pid = PTR_TO_UINT(hashmap_first_key(pids)); siginfo_t si; char *path; zero(si); - if (waitid(P_ALL, 0, &si, WEXITED) < 0) { + if (waitid(P_PID, pid, &si, WEXITED) < 0) { if (errno == EINTR) continue; @@ -5235,8 +5116,14 @@ int rtc_open(int flags) { int fd; DIR *d; - /* We open the first RTC which has hctosys=1 set. If we don't - * find any we just take the first one */ + /* First, we try to make use of the /dev/rtc symlink. If that + * doesn't exist, we open the first RTC which has hctosys=1 + * set. If we don't find any we just take the first RTC that + * exists at all. */ + + fd = open("/dev/rtc", flags); + if (fd >= 0) + return fd; d = opendir("/sys/class/rtc"); if (!d) @@ -6273,3 +6160,39 @@ void* memdup(const void *p, size_t l) { memcpy(r, p, l); return r; } + +int fd_inc_sndbuf(int fd, size_t n) { + int r, value; + socklen_t l = sizeof(value); + + r = getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, &l); + if (r >= 0 && + l == sizeof(value) && + (size_t) value >= n*2) + return 0; + + value = (int) n; + r = setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, sizeof(value)); + if (r < 0) + return -errno; + + return 1; +} + +int fd_inc_rcvbuf(int fd, size_t n) { + int r, value; + socklen_t l = sizeof(value); + + r = getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, &l); + if (r >= 0 && + l == sizeof(value) && + (size_t) value >= n*2) + return 0; + + value = (int) n; + r = setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, sizeof(value)); + if (r < 0) + return -errno; + + return 1; +}