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linux: remove readlinkat() dependency

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This commit is contained in:
Aurelien Jacobs 2014-09-04 20:13:55 +02:00
parent 546e9ae5c5
commit 653cef3ab1
3 changed files with 0 additions and 10 deletions
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3
configure.ac
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@ -119,9 +119,6 @@ AC_CHECK_MEMBERS([struct termios.c_ispeed, struct termios.c_ospeed],
AC_CHECK_MEMBERS([struct termios2.c_ispeed, struct termios2.c_ospeed],
[AC_DEFINE(HAVE_TERMIOS2_SPEED, 1)], [], [[#include <linux/termios.h>]])
# Check for readlinkat.
AC_CHECK_FUNC([readlinkat], [AC_DEFINE(HAVE_READLINKAT, 1)], [])
# Check for serial_struct.
AC_CHECK_TYPE([struct serial_struct], [AC_DEFINE(HAVE_SERIAL_STRUCT, 1)],
[], [[#include <linux/serial.h>]])

1
libserialport_internal.h
View File

@ -20,7 +20,6 @@
#ifdef __linux__
#define _BSD_SOURCE // for timeradd, timersub, timercmp
#define _XOPEN_SOURCE 700 // for readlinkat
#endif
#include <string.h>

6
linux.c
View File

@ -165,9 +165,7 @@ SP_PRIV enum sp_return list_ports(struct sp_port ***list)
struct serial_struct serial_info;
int ioctl_result;
#endif
#ifndef HAVE_READLINKAT
char buf[sizeof(entry.d_name) + 16];
#endif
int len, fd;
DIR *dir;
int ret = SP_OK;
@ -178,12 +176,8 @@ SP_PRIV enum sp_return list_ports(struct sp_port ***list)
DEBUG("Iterating over results");
while (!readdir_r(dir, &entry, &result) && result) {
#ifdef HAVE_READLINKAT
len = readlinkat(dirfd(dir), entry.d_name, target, sizeof(target));
#else
snprintf(buf, sizeof(buf), "/sys/class/tty/%s", entry.d_name);
len = readlink(buf, target, sizeof(target));
#endif
if (len <= 0 || len >= (int) sizeof(target)-1)
continue;
target[len] = 0;