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| author | Florian Weimer <fweimer@redhat.com> | 2018-07-06 16:53:48 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2018-07-06 17:52:54 +0200 |
| commit | 3f5e3f5d066dcffb80af48ae2cf35a01a85a8f10 (patch) | |
| tree | 2eb99509fbdfb5f61ee40bdf634c63f092b85ae2 /libio/ftello.c | |
| parent | 397c54c1afa531242602fe3ac7bb47eff0e909f9 (diff) | |
| download | glibc-3f5e3f5d066dcffb80af48ae2cf35a01a85a8f10.tar.gz glibc-3f5e3f5d066dcffb80af48ae2cf35a01a85a8f10.tar.xz glibc-3f5e3f5d066dcffb80af48ae2cf35a01a85a8f10.zip | |
libio: Implement internal function __libc_readline_unlocked
This is a variant of fgets which fails with ERANGE if the buffer is too small, and the buffer length is given as an argument of type size_t. This function will be useful for implementing NSS file reading operations. Compared to a direct implementation using the public API, it avoids an lseek system call in case the line terminator can be found in the internal read buffer.
Diffstat (limited to 'libio/ftello.c')
| -rw-r--r-- | libio/ftello.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/libio/ftello.c b/libio/ftello.c index 5405821b45..5a3caf4ad9 100644 --- a/libio/ftello.c +++ b/libio/ftello.c @@ -24,12 +24,15 @@ This exception applies to code released by its copyright holders in files containing the exception. */ +/* We need to disable the redirect for __ftello64 for the alias + definitions below to work. */ +#define __ftello64 __ftello64_disable + #include <stdio.h> #include <stdlib.h> #include <libioP.h> #include <errno.h> - off_t __ftello (FILE *fp) { @@ -61,4 +64,7 @@ weak_alias (__ftello, ftello) #ifdef __OFF_T_MATCHES_OFF64_T weak_alias (__ftello, ftello64) +# undef __ftello64 +strong_alias (__ftello, __ftello64) +libc_hidden_ver (__ftello, __ftello64) #endif |