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author | Florian Weimer <fweimer@redhat.com> | 2020-07-15 13:41:31 +0200 |
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committer | Florian Weimer <fweimer@redhat.com> | 2020-07-21 07:33:50 +0200 |
commit | bdee910e88006ae33dc83ac3d2c0708adb6627d0 (patch) | |
tree | c80cd50103ca8a413cccd589511abea88720e6b2 /nss/nss_parse_line_result.c | |
parent | d4b4586315974d2471486d41891aa9463a5838ad (diff) | |
download | glibc-bdee910e88006ae33dc83ac3d2c0708adb6627d0.tar.gz glibc-bdee910e88006ae33dc83ac3d2c0708adb6627d0.tar.xz glibc-bdee910e88006ae33dc83ac3d2c0708adb6627d0.zip |
nss: Add __nss_fgetent_r
And helper functions __nss_readline, __nss_readline_seek, __nss_parse_line_result. This consolidates common code for handling overlong lines and parse files. Use the new functionality in internal_getent in nss/nss_files/files-XXX.c. Tested-by: Carlos O'Donell <carlos@redhat.com> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'nss/nss_parse_line_result.c')
-rw-r--r-- | nss/nss_parse_line_result.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/nss/nss_parse_line_result.c b/nss/nss_parse_line_result.c new file mode 100644 index 0000000000..cd008e3c36 --- /dev/null +++ b/nss/nss_parse_line_result.c @@ -0,0 +1,46 @@ +/* Implementation of __nss_parse_line_result. + Copyright (C) 2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library 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. + + The GNU C Library 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 the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <nss_files.h> + +#include <assert.h> +#include <errno.h> + +int +__nss_parse_line_result (FILE *fp, off64_t offset, int parse_line_result) +{ + assert (parse_line_result >= -1 && parse_line_result <= 1); + + switch (__builtin_expect (parse_line_result, 1)) + { + case 1: + /* Sucess. */ + return 0; + case 0: + /* Parse error. */ + __set_errno (EINVAL); + return EINVAL; + case -1: + /* Out of buffer space. */ + return __nss_readline_seek (fp, offset); + + default: + __builtin_unreachable (); + } +} +libc_hidden_def (__nss_parse_line_result) |