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Bug 759417 - handle big device numbers in MapsMemoryReporter.cpp; r=jlebar

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This commit is contained in:
Nathan Froyd 2012-05-30 15:11:58 -04:00
parent 849ca56b11
commit 92d5bc874a
1 changed files with 8 additions and 3 deletions
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11
xpcom/base/MapsMemoryReporter.cpp
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@ -288,8 +288,11 @@ MapsReporter::ParseMapping(
unsigned long long addrStart, addrEnd;
char perms[5];
unsigned long long offset;
char devMajor[3];
char devMinor[3];
// The 2.6 and 3.0 kernels allocate 12 bits for the major device number and
// 20 bits for the minor device number. Future kernels might allocate more.
// 64 bits ought to be enough for anybody.
char devMajor[17];
char devMinor[17];
unsigned int inode;
char path[1025];
@ -301,7 +304,9 @@ MapsReporter::ParseMapping(
// with or without a path, but we don't want to look to a new line for the
// path. Thus we have %u%1024[^\n] at the end of the pattern. This will
// capture into the path some leading whitespace, which we'll later trim off.
int numRead = fscanf(aFile, "%llx-%llx %4s %llx %2s:%2s %u%1024[^\n]",
int numRead = fscanf(aFile,
"%llx-%llx %4s %llx "
"%16[0-9a-fA-F]:%16[0-9a-fA-F] %u%1024[^\n]",
&addrStart, &addrEnd, perms, &offset, devMajor,
devMinor, &inode, path);