diff options
Diffstat (limited to 'src/copypaste/util.c')
| -rw-r--r-- | src/copypaste/util.c | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/src/copypaste/util.c b/src/copypaste/util.c new file mode 100644 index 0000000..5375921 --- /dev/null +++ b/src/copypaste/util.c @@ -0,0 +1,279 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +/*** + This file is part of systemd. + + Copyright 2010 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see <http://www.gnu.org/licenses/>. +***/ + +#include <assert.h> +#include <string.h> +#include <unistd.h> +#include <errno.h> +#include <stdlib.h> +#include <signal.h> +#include <stdio.h> +#include <syslog.h> +#include <sched.h> +#include <sys/resource.h> +#include <linux/sched.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <dirent.h> +#include <sys/ioctl.h> +#include <linux/vt.h> +#include <linux/tiocl.h> +#include <termios.h> +#include <stdarg.h> +#include <sys/inotify.h> +#include <sys/poll.h> +#include <libgen.h> +#include <ctype.h> +#include <sys/prctl.h> +#include <sys/utsname.h> +#include <pwd.h> +#include <netinet/ip.h> +#include <linux/kd.h> +#include <dlfcn.h> +#include <sys/wait.h> +#include <sys/time.h> +#include <glob.h> +#include <grp.h> +#include <sys/mman.h> +#include <sys/vfs.h> +#include <linux/magic.h> + +#include "macro.h" +#include "util.h" + +int saved_argc = 0; +char **saved_argv = NULL; + +usec_t now(clockid_t clock_id) { + struct timespec ts; + + assert_se(clock_gettime(clock_id, &ts) == 0); + + return timespec_load(&ts); +} + +usec_t timespec_load(const struct timespec *ts) { + assert(ts); + + return + (usec_t) ts->tv_sec * USEC_PER_SEC + + (usec_t) ts->tv_nsec / NSEC_PER_USEC; +} + +bool endswith(const char *s, const char *postfix) { + size_t sl, pl; + + assert(s); + assert(postfix); + + sl = strlen(s); + pl = strlen(postfix); + + if (pl == 0) + return true; + + if (sl < pl) + return false; + + return memcmp(s + sl - pl, postfix, pl) == 0; +} + +int close_nointr(int fd) { + assert(fd >= 0); + + for (;;) { + int r; + + r = close(fd); + if (r >= 0) + return r; + + if (errno != EINTR) + return -errno; + } +} + +void close_nointr_nofail(int fd) { + int saved_errno = errno; + + /* like close_nointr() but cannot fail, and guarantees errno + * is unchanged */ + + assert_se(close_nointr(fd) == 0); + + errno = saved_errno; +} + +int parse_boolean(const char *v) { + assert(v); + + if (streq(v, "1") || v[0] == 'y' || v[0] == 'Y' || v[0] == 't' || v[0] == 'T' || !strcasecmp(v, "on")) + return 1; + else if (streq(v, "0") || v[0] == 'n' || v[0] == 'N' || v[0] == 'f' || v[0] == 'F' || !strcasecmp(v, "off")) + return 0; + + return -EINVAL; +} + +int read_one_line_file(const char *fn, char **line) { + FILE *f; + int r; + char t[LINE_MAX], *c; + + assert(fn); + assert(line); + + f = fopen(fn, "re"); + if (!f) + return -errno; + + if (!fgets(t, sizeof(t), f)) { + + if (ferror(f)) { + r = -errno; + goto finish; + } + + t[0] = 0; + } + + c = strdup(t); + if (!c) { + r = -ENOMEM; + goto finish; + } + + truncate_nl(c); + + *line = c; + r = 0; + +finish: + fclose(f); + return r; +} + +char *truncate_nl(char *s) { + assert(s); + + s[strcspn(s, NEWLINE)] = 0; + return s; +} + +char *strnappend(const char *s, const char *suffix, size_t b) { + size_t a; + char *r; + + if (!s && !suffix) + return strdup(""); + + if (!s) + return strndup(suffix, b); + + if (!suffix) + return strdup(s); + + assert(s); + assert(suffix); + + a = strlen(s); + + if (!(r = new(char, a+b+1))) + return NULL; + + memcpy(r, s, a); + memcpy(r+a, suffix, b); + r[a+b] = 0; + + return r; +} + +char *strappend(const char *s, const char *suffix) { + return strnappend(s, suffix, suffix ? strlen(suffix) : 0); +} + +bool ignore_file(const char *filename) { + assert(filename); + + return + filename[0] == '.' || + streq(filename, "lost+found") || + streq(filename, "aquota.user") || + streq(filename, "aquota.group") || + endswith(filename, "~") || + endswith(filename, ".rpmnew") || + endswith(filename, ".rpmsave") || + endswith(filename, ".rpmorig") || + endswith(filename, ".dpkg-old") || + endswith(filename, ".dpkg-new") || + endswith(filename, ".swp"); +} + +char *strjoin(const char *x, ...) { + va_list ap; + size_t l; + char *r, *p; + + va_start(ap, x); + + if (x) { + l = strlen(x); + + for (;;) { + const char *t; + + t = va_arg(ap, const char *); + if (!t) + break; + + l += strlen(t); + } + } else + l = 0; + + va_end(ap); + + r = new(char, l+1); + if (!r) + return NULL; + + if (x) { + p = stpcpy(r, x); + + va_start(ap, x); + + for (;;) { + const char *t; + + t = va_arg(ap, const char *); + if (!t) + break; + + p = stpcpy(p, t); + } + + va_end(ap); + } else + r[0] = 0; + + return r; +} |