diff options
Diffstat (limited to 'libgamma_perror.c')
| -rw-r--r-- | libgamma_perror.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/libgamma_perror.c b/libgamma_perror.c new file mode 100644 index 0000000..92060d8 --- /dev/null +++ b/libgamma_perror.c @@ -0,0 +1,40 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + + +/** + * Prints an error to stderr in a `perror` fashion + * + * @param name The text to add at the beginning + * @param value The error code, may be an `errno` value + */ +void +libgamma_perror(const char *name, int error_code) +{ + const char *desc, *gname; + char buf[1024]; + long int gid; + + desc = libgamma_strerror_r(error_code, buf, sizeof(buf)); + + if (error_code == LIBGAMMA_DEVICE_REQUIRE_GROUP) { + gid = (intmax_t)libgamma_group_gid_get(); + gname = libgamma_group_name_get(); + if (!gname) { + if (name && *name) + fprintf(stderr, "%s: %s in group %ji\n", name, desc, gid); + else + fprintf(stderr, "%s in group %ji\n", desc, gid); + } else { + if (name && *name) + fprintf(stderr, "%s: %s in group %s (%ji)\n", name, desc, gname, gid); + else + fprintf(stderr, "%s in group %s (%ji)\n", desc, gname, gid); + } + } else { + if (name && *name) + fprintf(stderr, "%s: %s\n", name, desc); + else + fprintf(stderr, "%s\n", desc); + } +} |