***/
#include <unistd.h>
-#include <sys/sendfile.h>
-#include "fileio.h"
+
#include "util.h"
#include "strv.h"
#include "utf8.h"
#include "ctype.h"
+#include "fileio.h"
+
+int write_string_stream(FILE *f, const char *line) {
+ assert(f);
+ assert(line);
-int write_string_to_file(FILE *f, const char *line) {
errno = 0;
+
fputs(line, f);
if (!endswith(line, "\n"))
fputc('\n', f);
if (!f)
return -errno;
- return write_string_to_file(f, line);
+ return write_string_stream(f, line);
+}
+
+int write_string_file_no_create(const char *fn, const char *line) {
+ _cleanup_fclose_ FILE *f = NULL;
+ int fd;
+
+ assert(fn);
+ assert(line);
+
+ /* We manually build our own version of fopen(..., "we") that
+ * works without O_CREAT */
+ fd = open(fn, O_WRONLY|O_CLOEXEC|O_NOCTTY);
+ if (fd < 0)
+ return -errno;
+
+ f = fdopen(fd, "we");
+ if (!f) {
+ safe_close(fd);
+ return -errno;
+ }
+
+ return write_string_stream(f, line);
}
int write_string_file_atomic(const char *fn, const char *line) {
fchmod_umask(fileno(f), 0644);
- errno = 0;
- fputs(line, f);
- if (!endswith(line, "\n"))
- fputc('\n', f);
-
- fflush(f);
-
- if (ferror(f))
- r = errno ? -errno : -EIO;
- else {
+ r = write_string_stream(f, line);
+ if (r >= 0) {
if (rename(p, fn) < 0)
r = -errno;
- else
- r = 0;
}
if (r < 0)
return 0;
}
-ssize_t sendfile_full(int out_fd, const char *fn) {
- _cleanup_fclose_ FILE *f;
- struct stat st;
- int r;
- ssize_t s;
-
+int read_full_stream(FILE *f, char **contents, size_t *size) {
size_t n, l;
_cleanup_free_ char *buf = NULL;
+ struct stat st;
- assert(out_fd > 0);
- assert(fn);
+ assert(f);
+ assert(contents);
- f = fopen(fn, "re");
- if (!f)
+ if (fstat(fileno(f), &st) < 0)
return -errno;
- r = fstat(fileno(f), &st);
- if (r < 0)
- return -errno;
+ n = LINE_MAX;
- s = sendfile(out_fd, fileno(f), NULL, st.st_size);
- if (s < 0)
- if (errno == EINVAL || errno == ENOSYS) {
- /* continue below */
- } else
- return -errno;
- else
- return s;
+ if (S_ISREG(st.st_mode)) {
- /* sendfile() failed, fall back to read/write */
+ /* Safety check */
+ if (st.st_size > 4*1024*1024)
+ return -E2BIG;
- /* Safety check */
- if (st.st_size > 4*1024*1024)
- return -E2BIG;
+ /* Start with the right file size, but be prepared for
+ * files from /proc which generally report a file size
+ * of 0 */
+ if (st.st_size > 0)
+ n = st.st_size;
+ }
- n = st.st_size > 0 ? st.st_size : LINE_MAX;
l = 0;
-
- while (true) {
+ for (;;) {
char *t;
size_t k;
- t = realloc(buf, n);
+ t = realloc(buf, n+1);
if (!t)
return -ENOMEM;
return -E2BIG;
}
- r = write(out_fd, buf, l);
- if (r < 0)
- return -errno;
+ buf[l] = 0;
+ *contents = buf;
+ buf = NULL; /* do not free */
+
+ if (size)
+ *size = l;
- return (ssize_t) l;
+ return 0;
}
int read_full_file(const char *fn, char **contents, size_t *size) {
_cleanup_fclose_ FILE *f = NULL;
- size_t n, l;
- _cleanup_free_ char *buf = NULL;
- struct stat st;
assert(fn);
assert(contents);
if (!f)
return -errno;
- if (fstat(fileno(f), &st) < 0)
- return -errno;
-
- /* Safety check */
- if (st.st_size > 4*1024*1024)
- return -E2BIG;
-
- n = st.st_size > 0 ? st.st_size : LINE_MAX;
- l = 0;
-
- for (;;) {
- char *t;
- size_t k;
-
- t = realloc(buf, n+1);
- if (!t)
- return -ENOMEM;
-
- buf = t;
- k = fread(buf + l, 1, n - l, f);
-
- if (k <= 0) {
- if (ferror(f))
- return -errno;
-
- break;
- }
-
- l += k;
- n *= 2;
-
- /* Safety check */
- if (n > 4*1024*1024)
- return -E2BIG;
- }
-
- buf[l] = 0;
- *contents = buf;
- buf = NULL; /* do not free */
-
- if (size)
- *size = l;
-
- return 0;
+ return read_full_stream(f, contents, size);
}
static int parse_env_file_internal(
+ FILE *f,
const char *fname,
const char *newline,
int (*push) (const char *filename, unsigned line,
- const char *key, char *value, void *userdata),
- void *userdata) {
+ const char *key, char *value, void *userdata, int *n_pushed),
+ void *userdata,
+ int *n_pushed) {
_cleanup_free_ char *contents = NULL, *key = NULL;
size_t key_alloc = 0, n_key = 0, value_alloc = 0, n_value = 0, last_value_whitespace = (size_t) -1, last_key_whitespace = (size_t) -1;
COMMENT_ESCAPE
} state = PRE_KEY;
- assert(fname);
assert(newline);
- r = read_full_file(fname, &contents, NULL);
+ if (f)
+ r = read_full_stream(f, &contents, NULL);
+ else
+ r = read_full_file(fname, &contents, NULL);
if (r < 0)
return r;
state = KEY;
last_key_whitespace = (size_t) -1;
- if (!greedy_realloc((void**) &key, &key_alloc, n_key+2)) {
+ if (!GREEDY_REALLOC(key, key_alloc, n_key+2)) {
r = -ENOMEM;
goto fail;
}
else if (last_key_whitespace == (size_t) -1)
last_key_whitespace = n_key;
- if (!greedy_realloc((void**) &key, &key_alloc, n_key+2)) {
+ if (!GREEDY_REALLOC(key, key_alloc, n_key+2)) {
r = -ENOMEM;
goto fail;
}
if (last_key_whitespace != (size_t) -1)
key[last_key_whitespace] = 0;
- r = push(fname, line, key, value, userdata);
+ r = push(fname, line, key, value, userdata, n_pushed);
if (r < 0)
goto fail;
else if (!strchr(WHITESPACE, c)) {
state = VALUE;
- if (!greedy_realloc((void**) &value, &value_alloc, n_value+2)) {
+ if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) {
r = -ENOMEM;
goto fail;
}
if (last_key_whitespace != (size_t) -1)
key[last_key_whitespace] = 0;
- r = push(fname, line, key, value, userdata);
+ r = push(fname, line, key, value, userdata, n_pushed);
if (r < 0)
goto fail;
else if (last_value_whitespace == (size_t) -1)
last_value_whitespace = n_value;
- if (!greedy_realloc((void**) &value, &value_alloc, n_value+2)) {
+ if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) {
r = -ENOMEM;
goto fail;
}
if (!strchr(newline, c)) {
/* Escaped newlines we eat up entirely */
- if (!greedy_realloc((void**) &value, &value_alloc, n_value+2)) {
+ if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) {
r = -ENOMEM;
goto fail;
}
else if (c == '\\')
state = SINGLE_QUOTE_VALUE_ESCAPE;
else {
- if (!greedy_realloc((void**) &value, &value_alloc, n_value+2)) {
+ if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) {
r = -ENOMEM;
goto fail;
}
state = SINGLE_QUOTE_VALUE;
if (!strchr(newline, c)) {
- if (!greedy_realloc((void**) &value, &value_alloc, n_value+2)) {
+ if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) {
r = -ENOMEM;
goto fail;
}
else if (c == '\\')
state = DOUBLE_QUOTE_VALUE_ESCAPE;
else {
- if (!greedy_realloc((void**) &value, &value_alloc, n_value+2)) {
+ if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) {
r = -ENOMEM;
goto fail;
}
state = DOUBLE_QUOTE_VALUE;
if (!strchr(newline, c)) {
- if (!greedy_realloc((void**) &value, &value_alloc, n_value+2)) {
+ if (!GREEDY_REALLOC(value, value_alloc, n_value+2)) {
r = -ENOMEM;
goto fail;
}
if (last_key_whitespace != (size_t) -1)
key[last_key_whitespace] = 0;
- r = push(fname, line, key, value, userdata);
+ r = push(fname, line, key, value, userdata, n_pushed);
if (r < 0)
goto fail;
}
return r;
}
-static int parse_env_file_push(const char *filename, unsigned line,
- const char *key, char *value, void *userdata) {
+static int parse_env_file_push(
+ const char *filename, unsigned line,
+ const char *key, char *value,
+ void *userdata,
+ int *n_pushed) {
const char *k;
va_list aq, *ap = userdata;
if (!utf8_is_valid(key)) {
- _cleanup_free_ char *p = utf8_escape_invalid(key);
+ _cleanup_free_ char *p;
- log_error("%s:%u: invalid UTF-8 in key '%s', ignoring.",
- filename, line, p);
+ p = utf8_escape_invalid(key);
+ log_error("%s:%u: invalid UTF-8 in key '%s', ignoring.", strna(filename), line, p);
return -EINVAL;
}
if (value && !utf8_is_valid(value)) {
- _cleanup_free_ char *p = utf8_escape_invalid(value);
+ _cleanup_free_ char *p;
- log_error("%s:%u: invalid UTF-8 value for key %s: '%s', ignoring.",
- filename, line, key, p);
+ p = utf8_escape_invalid(value);
+ log_error("%s:%u: invalid UTF-8 value for key %s: '%s', ignoring.", strna(filename), line, key, p);
return -EINVAL;
}
va_end(aq);
free(*v);
*v = value;
+
+ if (n_pushed)
+ (*n_pushed)++;
+
return 1;
}
}
va_end(aq);
free(value);
+
return 0;
}
const char *newline, ...) {
va_list ap;
- int r;
+ int r, n_pushed = 0;
if (!newline)
newline = NEWLINE;
va_start(ap, newline);
- r = parse_env_file_internal(fname, newline, parse_env_file_push, &ap);
+ r = parse_env_file_internal(NULL, fname, newline, parse_env_file_push, &ap, &n_pushed);
va_end(ap);
- return r;
+ return r < 0 ? r : n_pushed;
}
-static int load_env_file_push(const char *filename, unsigned line,
- const char *key, char *value, void *userdata) {
+static int load_env_file_push(
+ const char *filename, unsigned line,
+ const char *key, char *value,
+ void *userdata,
+ int *n_pushed) {
char ***m = userdata;
char *p;
int r;
if (!utf8_is_valid(key)) {
- log_error("%s:%u: invalid UTF-8 for key '%s', ignoring.",
- filename, line, key);
+ _cleanup_free_ char *t = utf8_escape_invalid(key);
+
+ log_error("%s:%u: invalid UTF-8 for key '%s', ignoring.", strna(filename), line, t);
return -EINVAL;
}
if (value && !utf8_is_valid(value)) {
- /* FIXME: filter UTF-8 */
- log_error("%s:%u: invalid UTF-8 value for key %s: '%s', ignoring.",
- filename, line, key, value);
+ _cleanup_free_ char *t = utf8_escape_invalid(value);
+
+ log_error("%s:%u: invalid UTF-8 value for key %s: '%s', ignoring.", strna(filename), line, key, t);
return -EINVAL;
}
if (!p)
return -ENOMEM;
- r = strv_push(m, p);
+ r = strv_consume(m, p);
+ if (r < 0)
+ return r;
+
+ if (n_pushed)
+ (*n_pushed)++;
+
+ free(value);
+ return 0;
+}
+
+int load_env_file(FILE *f, const char *fname, const char *newline, char ***rl) {
+ char **m = NULL;
+ int r;
+
+ if (!newline)
+ newline = NEWLINE;
+
+ r = parse_env_file_internal(f, fname, newline, load_env_file_push, &m, NULL);
if (r < 0) {
- free(p);
+ strv_free(m);
return r;
}
- free(value);
+ *rl = m;
+ return 0;
+}
+
+static int load_env_file_push_pairs(
+ const char *filename, unsigned line,
+ const char *key, char *value,
+ void *userdata,
+ int *n_pushed) {
+ char ***m = userdata;
+ int r;
+
+ if (!utf8_is_valid(key)) {
+ _cleanup_free_ char *t = utf8_escape_invalid(key);
+
+ log_error("%s:%u: invalid UTF-8 for key '%s', ignoring.", strna(filename), line, t);
+ return -EINVAL;
+ }
+
+ if (value && !utf8_is_valid(value)) {
+ _cleanup_free_ char *t = utf8_escape_invalid(value);
+
+ log_error("%s:%u: invalid UTF-8 value for key %s: '%s', ignoring.", strna(filename), line, key, t);
+ return -EINVAL;
+ }
+
+ r = strv_extend(m, key);
+ if (r < 0)
+ return -ENOMEM;
+
+ if (!value) {
+ r = strv_extend(m, "");
+ if (r < 0)
+ return -ENOMEM;
+ } else {
+ r = strv_push(m, value);
+ if (r < 0)
+ return r;
+ }
+
+ if (n_pushed)
+ (*n_pushed)++;
+
return 0;
}
-int load_env_file(const char *fname, const char *newline, char ***rl) {
+int load_env_file_pairs(FILE *f, const char *fname, const char *newline, char ***rl) {
char **m = NULL;
int r;
if (!newline)
newline = NEWLINE;
- r = parse_env_file_internal(fname, newline, load_env_file_push, &m);
+ r = parse_env_file_internal(f, fname, newline, load_env_file_push_pairs, &m, NULL);
if (r < 0) {
strv_free(m);
return r;
p++;
fwrite(v, 1, p-v, f);
- if (string_has_cc(p) || chars_intersect(p, WHITESPACE "\'\"\\`$")) {
+ if (string_has_cc(p, NULL) || chars_intersect(p, WHITESPACE SHELL_NEED_QUOTES)) {
fputc('\"', f);
for (; *p; p++) {
- if (strchr("\'\"\\`$", *p))
+ if (strchr(SHELL_NEED_ESCAPE, *p))
fputc('\\', f);
fputc(*p, f);
}
int write_env_file(const char *fname, char **l) {
- char **i;
- _cleanup_free_ char *p = NULL;
_cleanup_fclose_ FILE *f = NULL;
+ _cleanup_free_ char *p = NULL;
+ char **i;
int r;
+ assert(fname);
+
r = fopen_temporary(fname, &f, &p);
if (r < 0)
return r;
fchmod_umask(fileno(f), 0644);
- errno = 0;
STRV_FOREACH(i, l)
write_env_var(f, *i);
- fflush(f);
+ r = fflush_and_check(f);
+ if (r >= 0) {
+ if (rename(p, fname) >= 0)
+ return 0;
- if (ferror(f))
- r = errno ? -errno : -EIO;
- else {
- if (rename(p, fname) < 0)
- r = -errno;
- else
- r = 0;
+ r = -errno;
}
- if (r < 0)
- unlink(p);
-
+ unlink(p);
return r;
}
int executable_is_script(const char *path, char **interpreter) {
int r;
- char _cleanup_free_ *line = NULL;
+ _cleanup_free_ char *line = NULL;
int len;
char *ans;
~ianmdlvl / elogind.git / blobdiff