Szabolcs NagyandRich Felker
4acfc287d8
Linux v5.1 introduced ipc syscalls on targets where previously only SYS_ipc was available, change the logic such that the ipc code keeps using SYS_ipc which works backward compatibly on older kernels. This changes behaviour on microblaze which had both mechanisms, now SYS_ipc will be used instead of separate syscalls.
18 lines
395 B
C
18 lines
395 B
C
#include <sys/shm.h>
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#include "syscall.h"
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#include "ipc.h"
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#ifndef SYS_ipc
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void *shmat(int id, const void *addr, int flag)
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{
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return (void *)syscall(SYS_shmat, id, addr, flag);
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}
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#else
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void *shmat(int id, const void *addr, int flag)
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{
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unsigned long ret;
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ret = syscall(SYS_ipc, IPCOP_shmat, id, flag, &addr, addr);
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return (ret > -(unsigned long)SHMLBA) ? (void *)ret : (void *)addr;
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}
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#endif
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