diff options
Diffstat (limited to 'src/common/util-common.c')
| -rw-r--r-- | src/common/util-common.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/common/util-common.c b/src/common/util-common.c index 3316eaec..ab74e7c6 100644 --- a/src/common/util-common.c +++ b/src/common/util-common.c @@ -17,6 +17,7 @@ * along with this program. If not, see <http://www.gnu.org/licenses/>. */ +#include <errno.h> #include <stdlib.h> #include <string.h> @@ -102,6 +103,30 @@ int llstat(char *path, struct stat *buf) return ret; } +/** Wrapper around fgets() which properly handles EINTR + * @param s string to read into + * @param size maximum length to read + * @param stream stream to read from + * @return value returned by fgets() + */ +char *safe_fgets(char *s, int size, FILE *stream) +{ + char *ret; + int errno_save = errno, ferror_save = ferror(stream); + while((ret = fgets(s, size, stream)) == NULL && !feof(stream)) { + if(errno == EINTR) { + /* clear any errors we set and try again */ + errno = errno_save; + if(!ferror_save) { + clearerr(stream); + } + } else { + break; + } + } + return ret; +} + #ifndef HAVE_STRNDUP /* A quick and dirty implementation derived from glibc */ /** Determines the length of a fixed-size string. |