#include int ceph_armor(char *dst, const char *src, const char *end); int ceph_unarmor(char *dst, const char *src, const char *end); /* * base64 encode/decode. */ static const char *pem_key = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; static int encode_bits(int c) { return pem_key[c]; } static int decode_bits(char c) { if (c >= 'A' && c <= 'Z') return c - 'A'; if (c >= 'a' && c <= 'z') return c - 'a' + 26; if (c >= '0' && c <= '9') return c - '0' + 52; if (c == '+') return 62; if (c == '/') return 63; if (c == '=') return 0; /* just non-negative, please */ return -EINVAL; } int ceph_armor(char *dst, const char *src, const char *end) { int olen = 0; int line = 0; while (src < end) { unsigned char a, b, c; a = *src++; *dst++ = encode_bits(a >> 2); if (src < end) { b = *src++; *dst++ = encode_bits(((a & 3) << 4) | (b >> 4)); if (src < end) { c = *src++; *dst++ = encode_bits(((b & 15) << 2) | (c >> 6)); *dst++ = encode_bits(c & 63); } else { *dst++ = encode_bits((b & 15) << 2); *dst++ = '='; } } else { *dst++ = encode_bits(((a & 3) << 4)); *dst++ = '='; *dst++ = '='; } olen += 4; line += 4; if (line == 64) { line = 0; *(dst++) = '\n'; olen++; } } return olen; } int ceph_unarmor(char *dst, const char *src, const char *end) { int olen = 0; while (src < end) { int a, b, c, d; if (src[0] == '\n') { src++; continue; } if (src + 4 > end) return -EINVAL; a = decode_bits(src[0]); b = decode_bits(src[1]); c = decode_bits(src[2]); d = decode_bits(src[3]); if (a < 0 || b < 0 || c < 0 || d < 0) return -EINVAL; *dst++ = (a << 2) | (b >> 4); if (src[2] == '=') return olen + 1; *dst++ = ((b & 15) << 4) | (c >> 2); if (src[3] == '=') return olen + 2; *dst++ = ((c & 3) << 6) | d; olen += 3; src += 4; } return olen; } '/cgit.cgi/linux/net-next.git/commit/drivers/usb/serial/cypress_m8.c?id=0b3589be9b98994ce3d5aeca52445d1f5627c4ba'>commitdiff
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authorPeter Zijlstra <peterz@infradead.org>2017-01-26 23:15:08 +0100
committerIngo Molnar <mingo@kernel.org>2017-01-30 11:41:26 +0100
commit0b3589be9b98994ce3d5aeca52445d1f5627c4ba (patch)
tree85d0d9b3ac902af2c938b19a566884caf8d00323 /drivers/usb/serial/cypress_m8.c
parenta76a82a3e38c8d3fb6499e3dfaeb0949241ab588 (diff)
perf/core: Fix PERF_RECORD_MMAP2 prot/flags for anonymous memory
Andres reported that MMAP2 records for anonymous memory always have their protection field 0. Turns out, someone daft put the prot/flags generation code in the file branch, leaving them unset for anonymous memory. Reported-by: Andres Freund <andres@anarazel.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Don Zickus <dzickus@redhat.com Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@gmail.com> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: acme@kernel.org Cc: anton@ozlabs.org Cc: namhyung@kernel.org Cc: stable@vger.kernel.org # v3.16+ Fixes: f972eb63b100 ("perf: Pass protection and flags bits through mmap2 interface") Link: http://lkml.kernel.org/r/20170126221508.GF6536@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/usb/serial/cypress_m8.c')