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author | Rich Felker <dalias@aerifal.cx> | 2014-07-19 23:37:21 -0400 |
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committer | Rich Felker <dalias@aerifal.cx> | 2014-07-28 00:28:01 -0400 |
commit | a83f0e7a6b348c255064f4ad5bbb112def2850b0 (patch) | |
tree | 2a9fa767fb1cb89a669826e47f8a819a896d6e3d /src/internal/libc.c | |
parent | 1b61e4cab919c39af4462ee2fbccc9e07a59aac0 (diff) | |
download | musl-a83f0e7a6b348c255064f4ad5bbb112def2850b0.tar.gz musl-a83f0e7a6b348c255064f4ad5bbb112def2850b0.tar.xz musl-a83f0e7a6b348c255064f4ad5bbb112def2850b0.zip |
fix mips struct stat dev_t members for big endian
the mips version of this structure on the kernel side wrongly has 32-bit type rather than 64-bit type. fortunately there is adjacent padding to bring it up to 64 bits, and on little-endian, this allows us to treat the adjacent kernel st_dev and st_pad0[0] as as single 64-bit dev_t. however, on big endian, such treatment results in the upper and lower 32-bit parts of the dev_t value being swapped. for the purpose of just comparing st_dev values this did not break anything, but it precluded actually processing the device numbers as major/minor values. since the broken kernel behavior that needs to be worked around is isolated to one arch, I put the workarounds in syscall_arch.h rather than adding a stat fixup path in the common code. on little endian mips, the added code optimizes out completely. the changes necessary were incompatible with the way the __asm_syscall macro was factored so I just removed it and flattened the individual __syscallN functions. this arguably makes the code easier to read and understand, anyway. (cherry picked from commit f61be1f875a2758509d6e9e2cf6f1d9603b28b65)
Diffstat (limited to 'src/internal/libc.c')
0 files changed, 0 insertions, 0 deletions