diff options
Diffstat (limited to 'lib/lib.c')
| -rw-r--r-- | lib/lib.c | 31 |
1 files changed, 21 insertions, 10 deletions
@@ -983,16 +983,20 @@ mode_t string_to_mode(char *modestr, mode_t mode) // Gaze into the bin of permission... for (;;) { - int i, j, dowho, dohow, dowhat; + int i, j, dowho, dohow, dowhat, amask; - dowho = dohow = dowhat = 0; + dowho = dohow = dowhat = amask = 0; // Find the who, how, and what stanzas, in that order while (*str && (s = strchr(whos, *str))) { dowho |= 1<<(s-whos); str++; } - if (!dowho) dowho = 8; + // If who isn't specified, like "a" but honoring umask. + if (!dowho) { + dowho = 8; + umask(amask=umask(0)); + } if (!*str || !(s = strchr(hows, *str))) goto barf; dohow = *(str++); @@ -1018,19 +1022,26 @@ mode_t string_to_mode(char *modestr, mode_t mode) for (i=0; i<4; i++) { for (j=0; j<3; j++) { mode_t bit = 0; + int where = 1<<((3*i)+j); + + if (amask & where) continue; // Figure out new value at this location if (i == 3) { - } else if (dowhat&(1<<j)) bit++; + // suid/sticky bit. + if (j) { + if ((dowhat & 8) && (dowho&(8|(1<<i)))) bit++; + } else if (dowhat & 16) bit++; + } else { + if (!(dowho&(8|(1<<i)))) continue; + if (dowhat&(1<<j)) bit++; + } // When selection active, modify bit - if (dowho&(8|(1<<i))) { - int where = 1<<((3*i)+j); - if (dohow == '=' || (bit && dohow == '-')) - mode &= ~where; - if (bit && dohow != '-') mode |= where; - } + if (dohow == '=' || (bit && dohow == '-')) + mode &= ~where; + if (bit && dohow != '-') mode |= where; } } |