#include <netinet/ip.h>
#include <linux/kd.h>
#include <dlfcn.h>
+#include <sys/wait.h>
#include "macro.h"
#include "util.h"
int read_one_line_file(const char *fn, char **line) {
FILE *f;
int r;
- char t[2048], *c;
+ char t[LINE_MAX], *c;
assert(fn);
assert(line);
return r;
}
+int read_full_file(const char *fn, char **contents) {
+ FILE *f;
+ int r;
+ size_t n, l;
+ char *buf = NULL;
+ struct stat st;
+
+ if (!(f = fopen(fn, "re")))
+ return -errno;
+
+ if (fstat(fileno(f), &st) < 0) {
+ r = -errno;
+ goto finish;
+ }
+
+ n = st.st_size > 0 ? st.st_size : LINE_MAX;
+ l = 0;
+
+ for (;;) {
+ char *t;
+ size_t k;
+
+ if (!(t = realloc(buf, n+1))) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ buf = t;
+ k = fread(buf + l, 1, n - l, f);
+
+ if (k <= 0) {
+ if (ferror(f)) {
+ r = -errno;
+ goto finish;
+ }
+
+ break;
+ }
+
+ l += k;
+ n *= 2;
+
+ /* Safety check */
+ if (n > 4*1024*1024) {
+ r = -E2BIG;
+ goto finish;
+ }
+ }
+
+ if (buf)
+ buf[l] = 0;
+ else if (!(buf = calloc(1, 1))) {
+ r = -errno;
+ goto finish;
+ }
+
+ *contents = buf;
+ buf = NULL;
+
+ r = 0;
+
+finish:
+ fclose(f);
+ free(buf);
+
+ return r;
+}
+
+int parse_env_file(
+ const char *fname,
+ const char *separator, ...) {
+
+ int r = 0;
+ char *contents, *p;
+
+ assert(fname);
+ assert(separator);
+
+ if ((r = read_full_file(fname, &contents)) < 0)
+ return r;
+
+ p = contents;
+ for (;;) {
+ const char *key = NULL;
+
+ p += strspn(p, separator);
+ p += strspn(p, WHITESPACE);
+
+ if (!*p)
+ break;
+
+ if (!strchr(COMMENTS, *p)) {
+ va_list ap;
+ char **value;
+
+ va_start(ap, separator);
+ while ((key = va_arg(ap, char *))) {
+ size_t n;
+ char *v;
+
+ value = va_arg(ap, char **);
+
+ n = strlen(key);
+ if (strncmp(p, key, n) != 0 ||
+ p[n] != '=')
+ continue;
+
+ p += n + 1;
+ n = strcspn(p, separator);
+
+ if (n >= 2 &&
+ strchr(QUOTES, p[0]) &&
+ p[n-1] == p[0])
+ v = strndup(p+1, n-2);
+ else
+ v = strndup(p, n);
+
+ if (!v) {
+ r = -ENOMEM;
+ va_end(ap);
+ goto fail;
+ }
+
+ if (v[0] == '\0') {
+ /* return empty value strings as NULL */
+ free(v);
+ v = NULL;
+ }
+
+ free(*value);
+ *value = v;
+
+ p += n;
+
+ r ++;
+ break;
+ }
+ va_end(ap);
+ }
+
+ if (!key)
+ p += strcspn(p, separator);
+ }
+
+fail:
+ free(contents);
+ return r;
+}
+
char *truncate_nl(char *s) {
assert(s);
return
filename[0] == '.' ||
streq(filename, "lost+found") ||
+ streq(filename, "aquota.user") ||
+ streq(filename, "aquota.group") ||
endswith(filename, "~") ||
endswith(filename, ".rpmnew") ||
endswith(filename, ".rpmsave") ||
}
int ask(char *ret, const char *replies, const char *text, ...) {
+ bool on_tty;
+
assert(ret);
assert(replies);
assert(text);
+ on_tty = isatty(STDOUT_FILENO);
+
for (;;) {
va_list ap;
char c;
int r;
bool need_nl = true;
- fputs("\x1B[1m", stdout);
+ if (on_tty)
+ fputs("\x1B[1m", stdout);
va_start(ap, text);
vprintf(text, ap);
va_end(ap);
- fputs("\x1B[0m", stdout);
+ if (on_tty)
+ fputs("\x1B[0m", stdout);
fflush(stdout);
assert(notify >= 0);
for (;;) {
- struct inotify_event e;
+ uint8_t inotify_buffer[sizeof(struct inotify_event) + FILENAME_MAX];
ssize_t l;
+ struct inotify_event *e;
- if ((l = read(notify, &e, sizeof(e))) != sizeof(e)) {
+ if ((l = read(notify, &inotify_buffer, sizeof(inotify_buffer))) < 0) {
- if (l < 0) {
+ if (errno == EINTR)
+ continue;
- if (errno == EINTR)
- continue;
+ r = -errno;
+ goto fail;
+ }
+
+ e = (struct inotify_event*) inotify_buffer;
- r = -errno;
- } else
+ while (l > 0) {
+ size_t step;
+
+ if (e->wd != wd || !(e->mask & IN_CLOSE)) {
r = -EIO;
+ goto fail;
+ }
- goto fail;
- }
+ step = sizeof(struct inotify_event) + e->len;
+ assert(step <= (size_t) l);
- if (e.wd != wd || !(e.mask & IN_CLOSE)) {
- r = -EIO;
- goto fail;
+ e = (struct inotify_event*) ((uint8_t*) e + step);
+ l -= step;
}
break;
free(r);
#elif defined(TARGET_DEBIAN)
- char *r;
+ char *r;
- if (read_one_line_file("/etc/debian_version", &r) < 0)
- return;
+ if (read_one_line_file("/etc/debian_version", &r) < 0)
+ return;
- truncate_nl(r);
+ truncate_nl(r);
- status_printf("Welcome to Debian \x1B[1;31m%s\x1B[0m!\n", r); /* Light Red for Debian */
+ status_printf("Welcome to Debian \x1B[1;31m%s\x1B[0m!\n", r); /* Light Red for Debian */
- free(r);
+ free(r);
+#elif defined(TARGET_ARCH)
+ status_printf("Welcome to \x1B[1;36mArch Linux\x1B[0m!\n"); /* Cyan for Arch */
#else
#warning "You probably should add a welcome text logic here."
#endif
return 0;
}
-char *unquote(const char *s, const char quote) {
+char *unquote(const char *s, const char* quotes) {
size_t l;
assert(s);
if ((l = strlen(s)) < 2)
return strdup(s);
- if (s[0] == quote && s[l-1] == quote)
+ if (strchr(quotes, s[0]) && s[l-1] == s[0])
return strndup(s+1, l-2);
return strdup(s);
}
+int wait_for_terminate(pid_t pid, siginfo_t *status) {
+ assert(pid >= 1);
+ assert(status);
+
+ for (;;) {
+ zero(*status);
+
+ if (waitid(P_PID, pid, status, WEXITED) < 0) {
+
+ if (errno == EINTR)
+ continue;
+
+ return -errno;
+ }
+
+ return 0;
+ }
+}
+
+int wait_for_terminate_and_warn(const char *name, pid_t pid) {
+ int r;
+ siginfo_t status;
+
+ assert(name);
+ assert(pid > 1);
+
+ if ((r = wait_for_terminate(pid, &status)) < 0) {
+ log_warning("Failed to wait for %s: %s", name, strerror(-r));
+ return r;
+ }
+
+ if (status.si_code == CLD_EXITED) {
+ if (status.si_status != 0) {
+ log_warning("%s failed with error code %i.", name, status.si_status);
+ return -EPROTO;
+ }
+
+ log_debug("%s succeeded.", name);
+ return 0;
+
+ } else if (status.si_code == CLD_KILLED ||
+ status.si_code == CLD_DUMPED) {
+
+ log_warning("%s terminated by signal %s.", name, signal_to_string(status.si_status));
+ return -EPROTO;
+ }
+
+ log_warning("%s failed due to unknown reason.", name);
+ return -EPROTO;
+
+}
+
+void freeze(void) {
+ for (;;)
+ pause();
+}
+
+bool null_or_empty(struct stat *st) {
+ assert(st);
+
+ if (S_ISREG(st->st_mode) && st->st_size <= 0)
+ return true;
+
+ if (S_ISCHR(st->st_mode) || S_ISBLK(st->st_mode))
+ return true;
+
+ return false;
+}
+
+DIR *xopendirat(int fd, const char *name) {
+ return fdopendir(openat(fd, name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC));
+}
+
static const char *const ioprio_class_table[] = {
[IOPRIO_CLASS_NONE] = "none",
[IOPRIO_CLASS_RT] = "realtime",
[SIGPIPE] = "PIPE",
[SIGALRM] = "ALRM",
[SIGTERM] = "TERM",
- [SIGSTKFLT] = "STKFLT",
+#ifdef SIGSTKFLT
+ [SIGSTKFLT] = "STKFLT", /* Linux on SPARC doesn't know SIGSTKFLT */
+#endif
[SIGCHLD] = "CHLD",
[SIGCONT] = "CONT",
[SIGSTOP] = "STOP",