Commit 248366894044f564ce56ac6340882bde17d24ec7
1 parent
d4b8f039
Implement acct and pretend to implement madvise.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1819 c046a42c-6fe2-441c-8c8c-71466251a162
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10 additions
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2 deletions
linux-user/syscall.c
| ... | ... | @@ -2145,7 +2145,10 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3, |
| 2145 | 2145 | goto unimplemented; |
| 2146 | 2146 | |
| 2147 | 2147 | case TARGET_NR_acct: |
| 2148 | - goto unimplemented; | |
| 2148 | + p = lock_user_string(arg1); | |
| 2149 | + ret = get_errno(acct(path(p))); | |
| 2150 | + unlock_user(p, arg1, 0); | |
| 2151 | + break; | |
| 2149 | 2152 | case TARGET_NR_umount2: |
| 2150 | 2153 | p = lock_user_string(arg1); |
| 2151 | 2154 | ret = get_errno(umount2(p, arg2)); |
| ... | ... | @@ -3547,7 +3550,12 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3, |
| 3547 | 3550 | #endif |
| 3548 | 3551 | #ifdef TARGET_NR_madvise |
| 3549 | 3552 | case TARGET_NR_madvise: |
| 3550 | - goto unimplemented; | |
| 3553 | + /* A straight passthrough may not be safe because qemu sometimes | |
| 3554 | + turns private flie-backed mappings into anonymous mappings. | |
| 3555 | + This will break MADV_DONTNEED. | |
| 3556 | + This is a hint, so ignoring and returning success is ok. */ | |
| 3557 | + ret = get_errno(0); | |
| 3558 | + break; | |
| 3551 | 3559 | #endif |
| 3552 | 3560 | #if TARGET_LONG_BITS == 32 |
| 3553 | 3561 | case TARGET_NR_fcntl64: | ... | ... |